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Test: Reproduction in Organisms - 2 (Old NCERT) - NEET MCQ


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25 Questions MCQ Test Biology Class 12 - Test: Reproduction in Organisms - 2 (Old NCERT)

Test: Reproduction in Organisms - 2 (Old NCERT) for NEET 2024 is part of Biology Class 12 preparation. The Test: Reproduction in Organisms - 2 (Old NCERT) questions and answers have been prepared according to the NEET exam syllabus.The Test: Reproduction in Organisms - 2 (Old NCERT) MCQs are made for NEET 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Reproduction in Organisms - 2 (Old NCERT) below.
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Test: Reproduction in Organisms - 2 (Old NCERT) - Question 1

Reproduction is an essential life process, which help in _____?

Detailed Solution for Test: Reproduction in Organisms - 2 (Old NCERT) - Question 1

During reproduction, new individuals are produced having similar traits that help in continuity of species. It is essential as all living organisms have fixed life span.

Test: Reproduction in Organisms - 2 (Old NCERT) - Question 2

The period of pregnancy is known as ________.

Detailed Solution for Test: Reproduction in Organisms - 2 (Old NCERT) - Question 2

The duration from implantation of fertilised eggs to uterus till birth of well-developed baby is called gestation period. It is about nine months in human beings.

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Test: Reproduction in Organisms - 2 (Old NCERT) - Question 3

Some scientist consider virus as living entities because they can ________.

Detailed Solution for Test: Reproduction in Organisms - 2 (Old NCERT) - Question 3

Virus is called as borderline of living and non-living. Viruses act as living one when inside the other living organism and reproduce very fast. When outside the living body, virus behaves as molecules without any sign of living.

Test: Reproduction in Organisms - 2 (Old NCERT) - Question 4

Largest bird is______.  

Detailed Solution for Test: Reproduction in Organisms - 2 (Old NCERT) - Question 4

Ostrich is a large sized bird. It is not able to fly long distance. The egg of ostrich is considered largest cell which is about one meter in diameter.

Test: Reproduction in Organisms - 2 (Old NCERT) - Question 5

The period from birth to death of an organism represents ________.

Detailed Solution for Test: Reproduction in Organisms - 2 (Old NCERT) - Question 5

The period from Birth of an individual to its natural death is called life span. Different organisms have different life span starting from one day to hundreds of years.

Test: Reproduction in Organisms - 2 (Old NCERT) - Question 6

When offspring is produced by a single parent with or without the involvement of gametes formation, than the reproduction is ________?

Detailed Solution for Test: Reproduction in Organisms - 2 (Old NCERT) - Question 6

When offspring is produced by a single parent with or without the involvement of gamete formation, the reproduction is asexual. When two parents (opposite sex) participate in the reproductive process and also involve fusion of male and female gametes, it is called sexual reproduction.

Test: Reproduction in Organisms - 2 (Old NCERT) - Question 7

Which of the following organism do not shows binary fission? 

Detailed Solution for Test: Reproduction in Organisms - 2 (Old NCERT) - Question 7

Amoeba, Paramecium, Euglena undergo binary fission in which cells divides into two equal halves. In Plasmodium, a number of offspring are produced inside the single cell.

Test: Reproduction in Organisms - 2 (Old NCERT) - Question 8

Flagellated, motile asexual reproductive structure are called?   

Detailed Solution for Test: Reproduction in Organisms - 2 (Old NCERT) - Question 8

A number of simple organism produce single or multi-flagellated spores called zoospores. Water is essential for this mode of reproduction. Aplanospores are non-flagellated spores.

Test: Reproduction in Organisms - 2 (Old NCERT) - Question 9

Identify the figure given below:-

Detailed Solution for Test: Reproduction in Organisms - 2 (Old NCERT) - Question 9

Rhizome of ginger is modified root, located inside the soil parallel to earth surface. Vegetative propagation of ginger is done with it.

Test: Reproduction in Organisms - 2 (Old NCERT) - Question 10

Water hyacinth is called as terror of Bengal due to_______.  

Detailed Solution for Test: Reproduction in Organisms - 2 (Old NCERT) - Question 10

Water hyacinth is water weeds which grows very fast and covers the whole ponds in few days. Weeds absorb oxygen from the water and make it oxygen deficient that kills the fish in ponds along with other aquatic organisms.

Test: Reproduction in Organisms - 2 (Old NCERT) - Question 11

Hibiscus flower is ________.

Detailed Solution for Test: Reproduction in Organisms - 2 (Old NCERT) - Question 11

The flowers that contain both male and female reproductive organs in same flower are called bisexual. In Hibiscus flower both stamen and carpel are present within same flower.

Test: Reproduction in Organisms - 2 (Old NCERT) - Question 12

The eyes of potato are___________.   

Detailed Solution for Test: Reproduction in Organisms - 2 (Old NCERT) - Question 12

Eyes of potato represent the node at which buds are formed. These buds are used to grow in plants. The buds are axillary in position. The potato tubers are actually modified stem.

Test: Reproduction in Organisms - 2 (Old NCERT) - Question 13

The release of egg from ovary is described as___________.   

Detailed Solution for Test: Reproduction in Organisms - 2 (Old NCERT) - Question 13

Egg is released from the ovary in the middle of menstrual cycle. In human beings, one egg is released one month from one ovary. Ovulation is under the control of hormones.

Test: Reproduction in Organisms - 2 (Old NCERT) - Question 14

Embryo sac is present inside_______.  

Detailed Solution for Test: Reproduction in Organisms - 2 (Old NCERT) - Question 14

Embryo sac is located inside the ovule that acts as female gametes. Egg fertilization and subsequent embryo development occurs inside the embryo sac. Endosperm is triploid and provides nutrition to embryo.

Test: Reproduction in Organisms - 2 (Old NCERT) - Question 15

Grafting is an artificial vegetative propagation method, the portion to be grafted on the main part is called as:

Detailed Solution for Test: Reproduction in Organisms - 2 (Old NCERT) - Question 15

Artificial vegetative propagation is carried out by cutting, layering and grafting. During grafting root system of one plant and shoot system of other plant is joined together. The upper part is called scion and lower part is called stock.

Test: Reproduction in Organisms - 2 (Old NCERT) - Question 16

In most of the aquatic organism Syngamy occurs in the water outside the body of the organism. This type of gamete fusion is called? 

Detailed Solution for Test: Reproduction in Organisms - 2 (Old NCERT) - Question 16

In aquatic organisms fusion of nuclei occurs outside the body of the female. The male and female release their gametes into water and they are brought together by water current. Such Syngamy is called external fertilisation.

Test: Reproduction in Organisms - 2 (Old NCERT) - Question 17

In embryogenesis process, cell division increase the number of cells while cell differentiation help in____.   

Detailed Solution for Test: Reproduction in Organisms - 2 (Old NCERT) - Question 17

Zygote divide mitotically to produce a number of cells. These cells arrange into different layers and specialised into different tissues to form organ by the process of differentiation.

Test: Reproduction in Organisms - 2 (Old NCERT) - Question 18

Every sexually reproducing organism, including human being begin life as a single cell called?  

Detailed Solution for Test: Reproduction in Organisms - 2 (Old NCERT) - Question 18

All sexually reproducing organisms develops from single cell called zygote. Zygote is formed by fusion of male and female gametes. Traits from male and female are present in the zygote.

Test: Reproduction in Organisms - 2 (Old NCERT) - Question 19

Sexual reproduction do not involves:   

Detailed Solution for Test: Reproduction in Organisms - 2 (Old NCERT) - Question 19

Sexual reproduction is comparatively slower mode of reproduction than asexual reproduction. The formation of gametes, there fusion and embryo formation takes longer duration.

Test: Reproduction in Organisms - 2 (Old NCERT) - Question 20

During oogenesis, each diploid oocyte produces _____.

Detailed Solution for Test: Reproduction in Organisms - 2 (Old NCERT) - Question 20
  • Oogenesis is the process of formation of a mature female gamete (ovum).
  • During oogenesis, each diploid primary oocyte (formed by mitotic divisions of oogonia or egg mother cells) undergoes two maturation divisions.·
  • In the first meiotic division, the primary oocyte divides into two very unequal haploid daughter cells - a large secondary oocyte and a very small first polar body or polocyte.
  • In the second maturation division the first polar body may divide to form two second polar bodies.
  • The secondary oocyte again divides into unequal daughter cells, a large ootid and a very small second polar body.
  • The ootid grows into a functional haploid ovum. Thus from one primary oocyte, one ovum and three polar bodies are formed. The ovum is the actual female gamete.
Test: Reproduction in Organisms - 2 (Old NCERT) - Question 21

Somaclonal variation appears in plants _____.  

Detailed Solution for Test: Reproduction in Organisms - 2 (Old NCERT) - Question 21

Tissue culture is mode of vitro propagation of large number of plantlets in short interval of time. During tissue culture, plants parts are kept in nutrient medium along with required hormones. Some variation arises in plants body although having same genetic traits.

Test: Reproduction in Organisms - 2 (Old NCERT) - Question 22

What is common between vegetative propagation and apomixes? 

Detailed Solution for Test: Reproduction in Organisms - 2 (Old NCERT) - Question 22

As apomixis means asexual reproduction and vegetative propagation is also a kind of asexual reproduction, their's common feature is that both do produce offsprings identical to their parents as in asexual reproduction, only one single gamate is involved in the reproduction process.

Test: Reproduction in Organisms - 2 (Old NCERT) - Question 23

Which one of the following pairs is wrongly matched?  

Detailed Solution for Test: Reproduction in Organisms - 2 (Old NCERT) - Question 23

Water hyacinth develops offset for vegetative propagation. Its forms large number of branches in very short interval of time to cover the whole water bodies and depriving other aquatic organisms from oxygen dissolved in water.

Test: Reproduction in Organisms - 2 (Old NCERT) - Question 24

Statement I: Asexual reproduction involves fusion of gametes.
Statement II: Asexually produced offspring are genetically identical.
Statement III: Asexual reproduction occurs in unfavorable condition only.   

Detailed Solution for Test: Reproduction in Organisms - 2 (Old NCERT) - Question 24

Asexual reproduction does not involve fusion of gametes /fertilisation and it can occur in favourable conditions also.

Test: Reproduction in Organisms - 2 (Old NCERT) - Question 25

In grafting, scion forms?

Detailed Solution for Test: Reproduction in Organisms - 2 (Old NCERT) - Question 25

Grafting (including budding) is a process by which a portion of the shoot system or root system of the same or different plants, brought into intimate contact, unite and grow together anatomically, and interact physiologically as a single functional unit (whole plant).

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