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All questions of How do Organisms Reproduce? for Class 10 Exam
What marks the beginning of the reproductive life of a woman?- a)Menopause
- b)Menarche
- c)Fertilisation
- d)Ovulation
Correct answer is option 'B'. Can you explain this answer?
What marks the beginning of the reproductive life of a woman?
a)
Menopause
b)
Menarche
c)
Fertilisation
d)
Ovulation
|
|
Poorvi.m. Singh answered |
Menarch leads to the release of matured egg every month which gives a chance for fertilisation
When a sperm is deposited into the vagina which route does it travel?- a)Vagina → Oviduct → Uterus → Cervix
- b)Vagina → Ovary → Uterus → Oviduct
- c)Vagina → Cervix → Uterus → Oviduct
- d)Vagina → Uterus → Cervix → Oviduct
Correct answer is option 'C'. Can you explain this answer?
When a sperm is deposited into the vagina which route does it travel?
a)
Vagina → Oviduct → Uterus → Cervix
b)
Vagina → Ovary → Uterus → Oviduct
c)
Vagina → Cervix → Uterus → Oviduct
d)
Vagina → Uterus → Cervix → Oviduct
|
Gayatri bajaj answered |
B) Cervix
c) Uterus
d) Fallopian tubes
c) Uterus
d) Fallopian tubes
Asexual reproduction is good because it:- a)Involves two parents
- b)Is simple and fast
- c)Shows no variation
- d)Produces defect in offspring
Correct answer is option 'B'. Can you explain this answer?
Asexual reproduction is good because it:
a)
Involves two parents
b)
Is simple and fast
c)
Shows no variation
d)
Produces defect in offspring
|
Anjana Khatri answered |
Asexual reproduction occurs when an organism makes more of itself without exchanging genetic information with another organism through sex.In sexually reproducing organisms, the genomes of two parents are combined to create offspring with unique genetic profiles. This is beneficial to the population because genetically diverse populations have a higher chance of withstanding survival challenges such as disease and environmental changes.
Asexually reproducing organisms can suffer a dangerous lack of diversity – but they can also reproduce faster than sexually reproducing organisms, and a single individual can found a new population without the need for a mate.
The ability to reproduce is lost in a female after- a)fertilisation
- b)menstruation
- c)gamete formation
- d)menopause
Correct answer is option 'D'. Can you explain this answer?
The ability to reproduce is lost in a female after
a)
fertilisation
b)
menstruation
c)
gamete formation
d)
menopause
|
|
Poorvi.m. Singh answered |
After menaphause ..eggs r not released by ovary and hence fertilisation can not take place..
Which part of seed on germination develops into shoot?- a)Funicle
- b)Cotyledon
- c)Radicle
- d)Plumule
Correct answer is option 'D'. Can you explain this answer?
Which part of seed on germination develops into shoot?
a)
Funicle
b)
Cotyledon
c)
Radicle
d)
Plumule
|
Rahul Kapoor answered |
In plant physiology, the epicotyl is the embryonic shoot above the cotyledons. In most plants theepicotyl will eventually develop into the leaves of the plant. In dicots, the hypocotyl is what appears to be the base stem under the spent withered cotyledons, and the shoot just above that is theepicotyl.
Which is commonly called as plumule , which forms shoot parts And radicle forms root parts.
Human beings are more genetically advanced than monkey because of:- a)Fragmentation
- b)Reproduction
- c)Budding
- d)Variation
Correct answer is option 'D'. Can you explain this answer?
Human beings are more genetically advanced than monkey because of:
a)
Fragmentation
b)
Reproduction
c)
Budding
d)
Variation
|
|
Rajiv Gupta answered |
Human variability refers to the fact that there is a range of possible values for each of the numerous physical and mental characteristics of human beings. Fundamental Characteristic. Variation is, in fact, inherent in every living species.
New plants can be produces without the help of any reproductive organ by:- a)Vegetative propagation
- b)Regeneration
- c)Budding
- d)Fragmentation
Correct answer is option 'A'. Can you explain this answer?
New plants can be produces without the help of any reproductive organ by:
a)
Vegetative propagation
b)
Regeneration
c)
Budding
d)
Fragmentation
|
Mahi Ashta. answered |
Ofcourse....A is rytt....as vegetative propagation is...an artificial method of.... reproduction in..which the nodes ..of one...plant attached with internodes of other ...plant as not ...of the same plant...
A benefit of plant grown by vegetative propagation is :- a)Lose vigor
- b)Less adaptability to environment
- c)Better quality can be maintained
- d)Induces overcrowding
Correct answer is option 'C'. Can you explain this answer?
A benefit of plant grown by vegetative propagation is :
a)
Lose vigor
b)
Less adaptability to environment
c)
Better quality can be maintained
d)
Induces overcrowding
|
|
Rohan Kapoor answered |
Vegetative propagation is a type of asexual reproduction in plants which produces new organisms and does not involve the production of seeds or spores. It can be natural or can be induced. This type of reproduction is common to have desirable characteristics in a particular group of plants. Vegetative propagation is preferred to sexual reproduction for many reasons but mostly it preferred as it is an easy process and is a faster way to propagation of certain plants. In this method of artificial reproduction there are more amounts of clone produced and is better quality than the actual seedlings.
Advantage of Vegetative Propagation
The main advantage of vegetative propagation methods is that the new plants contain the genetic material of only one parent, so they are essentially clones of the parent plant. This means that, once you have a plant with desirable traits, you can reproduce the same traits indefinitely, as long as the growing conditions remain similar. This is especially important for commercial growers who want to reproduce the highest-quality plants and ensure consistency of a variety of plant or crop for sale. This can also help to maintain consistent quality and taste in products made from plants or crops. For example, in Zealong’s tea plantation, they propagate new tea plants using cuttings to ensure consistency in the taste and quality of their tea.
Reproduction is important as it allows:- a)Loss of vigour
- b)Sterility in organism
- c)Perpetuation of species
- d)Defects in offspring
Correct answer is option 'C'. Can you explain this answer?
Reproduction is important as it allows:
a)
Loss of vigour
b)
Sterility in organism
c)
Perpetuation of species
d)
Defects in offspring
|
Gaurav Kumar answered |
The main significance of reproduction is to maintain continuity of species. It also helps in studying evolution as sexual reproduction results in variation among the species.
In a bisexual flower, the parts that produce male and female gametes (germcells) are- a)anther and style
- b)stamen and stigma
- c)stamen and anther
- d)anther and ovary
Correct answer is option 'D'. Can you explain this answer?
In a bisexual flower, the parts that produce male and female gametes (germcells) are
a)
anther and style
b)
stamen and stigma
c)
stamen and anther
d)
anther and ovary
|
Ishan Choudhury answered |
Anther produces pollen grain while ovary produces egg.
Organism look similar because of similar:- a)Nuclei
- b)Ears
- c)Body design
- d)Eyes
Correct answer is option 'C'. Can you explain this answer?
Organism look similar because of similar:
a)
Nuclei
b)
Ears
c)
Body design
d)
Eyes
|
|
Ananya Das answered |
Organisms look similar because their body designs are similar. If body designs are to be similar , the blueprints for these designs should be similar.
Variation in organisms is due to:- a)Cloning
- b)Body design
- c)Fusions of gametes
- d)Multiplication
Correct answer is option 'C'. Can you explain this answer?
Variation in organisms is due to:
a)
Cloning
b)
Body design
c)
Fusions of gametes
d)
Multiplication
|
Indu Gupta answered |
When gametes of two parents fuse together it results in variations. Variation is due to change in the structure of DNA.
Which of the following plant has unisexual flowers?- a)Hibiscus
- b)Mustard
- c)Papaya
- d)Pansy
Correct answer is option 'C'. Can you explain this answer?
Which of the following plant has unisexual flowers?
a)
Hibiscus
b)
Mustard
c)
Papaya
d)
Pansy
|
|
Ananya Das answered |
Papaya has Unisexual flowers ie., make flowers and female flowers are on separate plants. So, the correct answer is papaya.
Which of the following is the correct sequence of events of sexual reproduction in a flower?
- a)pollination, fertilisation, seedling, embryo
- b)seedling, embryo, fertilisation, pollination
- c)pollination, fertilisation, embryo, seedling
- d)embryo, seedling, pollination, fertilisation
Correct answer is option 'C'. Can you explain this answer?
Which of the following is the correct sequence of events of sexual reproduction in a flower?
a)
pollination, fertilisation, seedling, embryo
b)
seedling, embryo, fertilisation, pollination
c)
pollination, fertilisation, embryo, seedling
d)
embryo, seedling, pollination, fertilisation
|
Vikas Kumar answered |
Sexual reproduction in flowering plants involves the production of male and female gametes, the transfer of the male gametes to the female ovules in a process called pollination. After pollination occurs, fertilization happens and the ovules grow into seeds within a fruit.
The number of chromosomes in parents and offsprings of a particular species remains constant due to- a)halving of chromosomes after gamete formation
- b)doubling of chromosome after gamete formation
- c)halving of chromosome during gamete formation
- d)doubling of chromosome after zygote formation
Correct answer is option 'C'. Can you explain this answer?
The number of chromosomes in parents and offsprings of a particular species remains constant due to
a)
halving of chromosomes after gamete formation
b)
doubling of chromosome after gamete formation
c)
halving of chromosome during gamete formation
d)
doubling of chromosome after zygote formation
|
|
Amit Kumar answered |
Gametes have half the number of chromosome (n) as they are formed by meiosis. After syngamy the (2n) diploidy is restored in zygote.
In case the ova does not fertilise, which of the following events will take place?- a)Menstruation
- b)Pregnancy
- c)Implantation
- d)Ovulation
Correct answer is option 'A'. Can you explain this answer?
In case the ova does not fertilise, which of the following events will take place?
a)
Menstruation
b)
Pregnancy
c)
Implantation
d)
Ovulation
|
|
Poorvi.m. Singh answered |
Option a is right answer because .....the wall of uterus will thicken to recieve the fertilized egg in case of no fertilisation....the thickened lining of uterus along with some blood vessels shud off....which is known as menstruation
Development of offsprings identical to their parents is the result of:- a)Fertilization
- b)Pollination
- c)Asexual reproduction
- d)Sexual reproduction
Correct answer is option 'C'. Can you explain this answer?
Development of offsprings identical to their parents is the result of:
a)
Fertilization
b)
Pollination
c)
Asexual reproduction
d)
Sexual reproduction
|
|
Vikas Kumar answered |
Asexual reproduction involves a single parent. It results in offspring that are genetically identical to each other and to the parent. All prokaryotes and some eukaryotes reproduce this way. Binary fission occurs when a parent cell splits into two identical daughter cells of the same size.
Where does fertilisation take place?- a)Uterus
- b)Vagina
- c)Fallopian tube
- d)Cervix
Correct answer is option 'C'. Can you explain this answer?
Where does fertilisation take place?
a)
Uterus
b)
Vagina
c)
Fallopian tube
d)
Cervix
|
|
Harshita Sharma answered |
Fallopian tube - where fertilisation take place
Uterus - where implantation take place
Length of pollen tube depends on the distance between- a)pollen grain on upper surface of stigma and ovule
- b)pollen grain and upper surface of stigma
- c)upper surface of stigma and lower part of style
- d)pollen grain in anther and upper surface of stigma
Correct answer is option 'A'. Can you explain this answer?
Length of pollen tube depends on the distance between
a)
pollen grain on upper surface of stigma and ovule
b)
pollen grain and upper surface of stigma
c)
upper surface of stigma and lower part of style
d)
pollen grain in anther and upper surface of stigma
|
Krishna Iyer answered |
Pollen tube passes from surface of stigma to the lowest part of pistil the ovary where ovules are located.
Which of the following is capable of producing a new plant?- a)Germ cell
- b)Pollen grain
- c)Ovule
- d)Seed
Correct answer is option 'D'. Can you explain this answer?
Which of the following is capable of producing a new plant?
a)
Germ cell
b)
Pollen grain
c)
Ovule
d)
Seed
|
|
Anjana Khatri answered |
The primary function of seeds is reproduction in which plants perpetuate themselves, mainly sexually. The seed is widely used in the deliberate production of seedlings, known as plant propagation. In addition, this organ also serves as a diaspore or dispersal unit of many plants.
Which of the following statements is not correct about reproduction ?- a)Lot of energy is spent in reproduction
- b)Reproduction creates more individuals
- c)Animals reproduces only by sexual mode of reproduction
- d)Reproduction is not necessary to maintain the life of an individual
Correct answer is option 'C'. Can you explain this answer?
Which of the following statements is not correct about reproduction ?
a)
Lot of energy is spent in reproduction
b)
Reproduction creates more individuals
c)
Animals reproduces only by sexual mode of reproduction
d)
Reproduction is not necessary to maintain the life of an individual
|
|
Ananya Das answered |
Some animals like hydra reproduce by asexual means. Reproduction is not necessary to maintain life.
Most of the flowering plants can reproduce by:- a)Sexual reproduction
- b)Cloning
- c)Asexual reproduction
- d)Spore formation
Correct answer is option 'A'. Can you explain this answer?
Most of the flowering plants can reproduce by:
a)
Sexual reproduction
b)
Cloning
c)
Asexual reproduction
d)
Spore formation
|
|
Anjana Khatri answered |
Often their most distinguishing feature is their reproductive organs, commonly called flowers. Sexual reproduction in flowering plants involves the production of male and female gametes, the transfer of the male gametes to the female ovules in a process called pollination.
Leishmania reproduce asexually by
- a)multiple fission
- b)binary fission
- c)binary fission in a definite orientation
- d)budding
Correct answer is option 'C'. Can you explain this answer?
Leishmania reproduce asexually by
a)
multiple fission
b)
binary fission
c)
binary fission in a definite orientation
d)
budding
|
|
Arvind bajaj answered |
Leishmania reproduces by binary fission.
In the list of organisms given below, those that reproduce by the asexual method are
(i) banana
(ii) dog
(iii) yeast
(iv) Amoeba- a)(ii) and (iv)
- b)(i), (iii) and (iv)
- c)(i) and (iv)
- d)(ii), (iii) and (iv)
Correct answer is option 'B'. Can you explain this answer?
In the list of organisms given below, those that reproduce by the asexual method are
(i) banana
(ii) dog
(iii) yeast
(iv) Amoeba
(i) banana
(ii) dog
(iii) yeast
(iv) Amoeba
a)
(ii) and (iv)
b)
(i), (iii) and (iv)
c)
(i) and (iv)
d)
(ii), (iii) and (iv)
|
|
Amit Sharma answered |
Asexual reproduction is the mode of reproduction in single parent produces offsprings. Amoeba reproduces asexually by binary fission. Asexual reproduction occurs in yeast by means of budding and in banana asexual reproduction occur by means of vegetative propagation from the stem. Thus, the correct answer is option B.
A student sowed two pieces of potato (A) with eye, (B) without eye. In which case plant will grow.- a)A
- b)B
- c)Both
- d)None
Correct answer is option 'A'. Can you explain this answer?
A student sowed two pieces of potato (A) with eye, (B) without eye. In which case plant will grow.
a)
A
b)
B
c)
Both
d)
None
|
|
Vikas Kumar answered |
The soil should be loose enough for the potato to send down roots easily. Take a piece of seed potato and press it firmly into contact with the soil. Be sure the “eye” faces up, as in the photo at left. Potatoes, unlike other garden crops, are usually not grown from small seeds. Instead, they grow from small cubes of tubers cut into chunks with at least two "eyes" known as seed potatoes. ... A potato's eyes only form and sprout under favorable growing conditions and after breaking from a dormant state.
A feature of reproduction that is common to Malarial parasite, Spirogyra and Yeast is that- a)they all are multicellular
- b)they all reproduce sexually only
- c)they reproduce asexually
- d)they all are unicellular
Correct answer is option 'C'. Can you explain this answer?
A feature of reproduction that is common to Malarial parasite, Spirogyra and Yeast is that
a)
they all are multicellular
b)
they all reproduce sexually only
c)
they reproduce asexually
d)
they all are unicellular
|
|
Krishna Iyer answered |
In all of them asexual reproduction takes place e.g., in spirogyra fragmentation, malarial parasite multiple fission and in yeast by budding.
Evolutionary change is not possible in:- a)Cross pollination
- b)Sexual reproduction
- c)Asexual reproduction
- d)Fertilization
Correct answer is option 'C'. Can you explain this answer?
Evolutionary change is not possible in:
a)
Cross pollination
b)
Sexual reproduction
c)
Asexual reproduction
d)
Fertilization
|
Mira Sharma answered |
The correct option is C.
In asexual reproduction an exact genetic copy of the parent organism is produced (a clone ). Unlike sexual reproduction, asexual reproduction only introduces genetic variation into the population if a random mutation in the organism's DNA is passed on to the offspring.
In asexual reproduction an exact genetic copy of the parent organism is produced (a clone ). Unlike sexual reproduction, asexual reproduction only introduces genetic variation into the population if a random mutation in the organism's DNA is passed on to the offspring.
When the foetus is growing inside the uterus it needs nutrients. Which part provides these nutrients?- a)Placenta
- b)Amniotic sac
- c)Oviduct
- d)Uterus
Correct answer is option 'A'. Can you explain this answer?
When the foetus is growing inside the uterus it needs nutrients. Which part provides these nutrients?
a)
Placenta
b)
Amniotic sac
c)
Oviduct
d)
Uterus
|
Sravanthi Lakshmi answered |
THE GROWING Foetus Recievies it's nutrients from placenta in the umbilical cord which is connected to the growing foetus from the mother and it receives all its nutrient rich content from mother directly through umbilical cord
Variations in offspring are mainly introduced as a result of:- a)Cloning
- b)Asexual reproduction
- c)Parthenogenesis
- d)Sexual reproduction
Correct answer is option 'D'. Can you explain this answer?
Variations in offspring are mainly introduced as a result of:
a)
Cloning
b)
Asexual reproduction
c)
Parthenogenesis
d)
Sexual reproduction
|
Sagnik Saini answered |
Introduction:
Variations in offspring refer to the differences or unique characteristics that offspring inherit from their parents. These variations are mainly introduced as a result of sexual reproduction.
Explanation:
Sexual reproduction is the process by which offspring are produced through the fusion of gametes, or reproductive cells, from two parents. This process involves the combination of genetic material from both parents, resulting in offspring that possess a unique combination of traits.
Genetic Variation:
One of the key reasons why sexual reproduction leads to variations in offspring is due to genetic recombination. During sexual reproduction, the parents contribute half of their genetic material to their offspring. This genetic material is shuffled and recombined through the process of meiosis, resulting in the production of genetically diverse gametes.
Combination of Traits:
When two gametes (sperm and egg) fuse during fertilization, they combine their genetic material to form a unique combination of traits in the offspring. Each parent contributes a different set of alleles, which are alternative forms of genes, to the offspring. This combination of alleles determines the characteristics and traits that the offspring will inherit.
Random Assortment:
Furthermore, during meiosis, the chromosomes in the parent's cells randomly assort, meaning that each gamete receives a different combination of chromosomes. This random assortment further increases genetic variation in the offspring.
Recombination:
In addition to random assortment, genetic recombination occurs during meiosis, where genetic material is exchanged between homologous chromosomes. This process further increases the genetic diversity in the offspring, as it allows for the mixing and rearrangement of alleles.
Conclusion:
In conclusion, variations in offspring are mainly introduced as a result of sexual reproduction. Through the combination of genetic material from two parents, genetic recombination, random assortment, and the exchange of genetic material during meiosis, offspring inherit a unique combination of traits that contribute to the variations observed in populations. This genetic diversity is essential for the survival and adaptation of species in changing environments.
Variations in offspring refer to the differences or unique characteristics that offspring inherit from their parents. These variations are mainly introduced as a result of sexual reproduction.
Explanation:
Sexual reproduction is the process by which offspring are produced through the fusion of gametes, or reproductive cells, from two parents. This process involves the combination of genetic material from both parents, resulting in offspring that possess a unique combination of traits.
Genetic Variation:
One of the key reasons why sexual reproduction leads to variations in offspring is due to genetic recombination. During sexual reproduction, the parents contribute half of their genetic material to their offspring. This genetic material is shuffled and recombined through the process of meiosis, resulting in the production of genetically diverse gametes.
Combination of Traits:
When two gametes (sperm and egg) fuse during fertilization, they combine their genetic material to form a unique combination of traits in the offspring. Each parent contributes a different set of alleles, which are alternative forms of genes, to the offspring. This combination of alleles determines the characteristics and traits that the offspring will inherit.
Random Assortment:
Furthermore, during meiosis, the chromosomes in the parent's cells randomly assort, meaning that each gamete receives a different combination of chromosomes. This random assortment further increases genetic variation in the offspring.
Recombination:
In addition to random assortment, genetic recombination occurs during meiosis, where genetic material is exchanged between homologous chromosomes. This process further increases the genetic diversity in the offspring, as it allows for the mixing and rearrangement of alleles.
Conclusion:
In conclusion, variations in offspring are mainly introduced as a result of sexual reproduction. Through the combination of genetic material from two parents, genetic recombination, random assortment, and the exchange of genetic material during meiosis, offspring inherit a unique combination of traits that contribute to the variations observed in populations. This genetic diversity is essential for the survival and adaptation of species in changing environments.
Assertion (A): Binary fission in Amoeba can occur in any plane.Reason (R): Amoeba exhibits flexibility in the orientation of cell division.- a)If both Assertion and Reason are true and Reason is the correct explanation of Assertion
- b)If both Assertion and Reason are true but Reason is not the correct explanation of Assertion
- c)If Assertion is true but Reason is false
- d)If both Assertion and Reason are false
Correct answer is option 'A'. Can you explain this answer?
Assertion (A): Binary fission in Amoeba can occur in any plane.
Reason (R): Amoeba exhibits flexibility in the orientation of cell division.
a)
If both Assertion and Reason are true and Reason is the correct explanation of Assertion
b)
If both Assertion and Reason are true but Reason is not the correct explanation of Assertion
c)
If Assertion is true but Reason is false
d)
If both Assertion and Reason are false
|
Kamna Science Academy answered |
- Assertion is correct as binary fission in Amoeba is indeed capable of occurring in any plane.
- The Reason is also correct because the flexibility in cell division orientation allows for this phenomenon.
- Moreover, the Reason serves as a correct explanation for the Assertion, as Amoeba's ability to divide in any plane is directly linked to its flexible cellular mechanics.
Characters transmitted from parents to offspring are present in- a)protoplasm
- b)cytoplasm
- c)genes
- d)gemmule
Correct answer is option 'C'. Can you explain this answer?
Characters transmitted from parents to offspring are present in
a)
protoplasm
b)
cytoplasm
c)
genes
d)
gemmule
|
|
Ananya Das answered |
DNA is the heridity material and genes which are located on chromosomes are made up of DNA.
The fertilisation of human egg by the sperm takes place in- a)vagina
- b)uterus
- c)ovary
- d)oviduct
Correct answer is option 'D'. Can you explain this answer?
The fertilisation of human egg by the sperm takes place in
a)
vagina
b)
uterus
c)
ovary
d)
oviduct
|
Nk Classes answered |
The fertilization of the human egg by the sperm takes place in the oviduct, specifically in the ampulla region of the fallopian tube.
The ability of a cell to divide into several cells during reproduction in Plasmodium is called- a)reduction division
- b)budding
- c)binary fission
- d)multiple fission
Correct answer is option 'D'. Can you explain this answer?
The ability of a cell to divide into several cells during reproduction in Plasmodium is called
a)
reduction division
b)
budding
c)
binary fission
d)
multiple fission
|
|
Shubham Kumar answered |
Multiple fission
because in multiple fission the single organism fuse (Blasts) or breakdown to form many new organjsms .(Individuals).
and plasmodium blasts to form many new organisms identical to itself .
another example is amoeba (During unfavrouble condition ) due to dehydration it devides into many new organisms identical to itself called amebae
because in multiple fission the single organism fuse (Blasts) or breakdown to form many new organjsms .(Individuals).
and plasmodium blasts to form many new organisms identical to itself .
another example is amoeba (During unfavrouble condition ) due to dehydration it devides into many new organisms identical to itself called amebae
How does cell division commonly occur in bacteria and protozoa?- a)By unequal splitting during division
- b)By forming multiple daughter cells
- c)By splitting into two equal halves
- d)By developing into spores
Correct answer is option 'C'. Can you explain this answer?
How does cell division commonly occur in bacteria and protozoa?
a)
By unequal splitting during division
b)
By forming multiple daughter cells
c)
By splitting into two equal halves
d)
By developing into spores
|
EduRev Class 10 answered |
Cell division in bacteria and protozoa commonly occurs by splitting into two equal halves. This process, known as binary fission, results in the formation of two identical daughter cells. Binary fission is a rapid and efficient way for these unicellular organisms to reproduce asexually.
Traits transmitted from parents to offspring during reproduction show- a)only similarities with parents
- b)only variation with parents
- c)both similarities and variation with parents
- d)neither similarities nor variations
Correct answer is option 'C'. Can you explain this answer?
Traits transmitted from parents to offspring during reproduction show
a)
only similarities with parents
b)
only variation with parents
c)
both similarities and variation with parents
d)
neither similarities nor variations
|
|
Chirag jain answered |
Offspring exhibit similarities as well as variation from parents.
What is the purpose of using intrauterine contraceptive devices (IUCDs) for contraception?- a)To prevent sperm transfer in males
- b)To block the fallopian tube in females
- c)To prevent the release of eggs
- d)To change hormonal balance in the body
Correct answer is option 'B'. Can you explain this answer??
a)
To prevent sperm transfer in males
b)
To block the fallopian tube in females
c)
To prevent the release of eggs
d)
To change hormonal balance in the body
|
Ashwin Sharma answered |
Understanding Intrauterine Contraceptive Devices (IUCDs)
Intrauterine contraceptive devices (IUCDs) are a popular form of long-term contraception used by many women. Their primary purpose is to prevent pregnancy, but the mechanisms by which they do this are often misunderstood.
How IUCDs Work
- Physical Barrier: IUCDs are inserted into the uterus, creating a physical barrier that prevents sperm from reaching an egg.
- Prevention of Implantation: They may also alter the uterine lining, making it less suitable for implantation if fertilization occurs.
Common Misconceptions
While the statement that IUCDs "block the fallopian tube in females" (option B) is not entirely accurate, it does emphasize the function of preventing sperm from fertilizing an egg. Here’s why the other options are incorrect:
- Option A: To prevent sperm transfer in males
IUCDs are designed exclusively for females and have no role in male contraception.
- Option C: To prevent the release of eggs
IUCDs do not inhibit ovulation; they primarily work by preventing fertilization and implantation.
- Option D: To change hormonal balance in the body
Hormonal IUCDs can release hormones like progestin, but the primary function is still related to preventing fertilization.
Conclusion
In summary, IUCDs serve as an effective method of contraception primarily by preventing sperm from fertilizing an egg and altering the uterine environment. Understanding their function helps women make informed choices about their reproductive health.
Intrauterine contraceptive devices (IUCDs) are a popular form of long-term contraception used by many women. Their primary purpose is to prevent pregnancy, but the mechanisms by which they do this are often misunderstood.
How IUCDs Work
- Physical Barrier: IUCDs are inserted into the uterus, creating a physical barrier that prevents sperm from reaching an egg.
- Prevention of Implantation: They may also alter the uterine lining, making it less suitable for implantation if fertilization occurs.
Common Misconceptions
While the statement that IUCDs "block the fallopian tube in females" (option B) is not entirely accurate, it does emphasize the function of preventing sperm from fertilizing an egg. Here’s why the other options are incorrect:
- Option A: To prevent sperm transfer in males
IUCDs are designed exclusively for females and have no role in male contraception.
- Option C: To prevent the release of eggs
IUCDs do not inhibit ovulation; they primarily work by preventing fertilization and implantation.
- Option D: To change hormonal balance in the body
Hormonal IUCDs can release hormones like progestin, but the primary function is still related to preventing fertilization.
Conclusion
In summary, IUCDs serve as an effective method of contraception primarily by preventing sperm from fertilizing an egg and altering the uterine environment. Understanding their function helps women make informed choices about their reproductive health.
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