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All questions of The Reproductive System for Class 10 Exam
What is the function of the umbilical cord?- a) To provide oxygen and nutrients to the mother
- b) To release hormones
- c) To store waste products
- d) To connect the fetus to the placenta
Correct answer is option 'D'. Can you explain this answer?
What is the function of the umbilical cord?
a)
To provide oxygen and nutrients to the mother
b)
To release hormones
c)
To store waste products
d)
To connect the fetus to the placenta
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The umbilical cord connects the fetus to the placenta, facilitating the transfer of oxygen, nutrients, and waste products between the mother and the developing fetus.
What is the first step in the fertilization process?- a) The ovum is released from the ovary.
- b) The sperm enters the uterus.
- c) The sperm travels through the oviduct.
- d) The zygote begins to divide.
Correct answer is option 'A'. Can you explain this answer?
What is the first step in the fertilization process?
a)
The ovum is released from the ovary.
b)
The sperm enters the uterus.
c)
The sperm travels through the oviduct.
d)
The zygote begins to divide.
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The first step in fertilization is the release of the ovum from the ovary, which is crucial for the sperm to successfully meet and fertilize the egg, leading to the formation of a zygote.
What is a characteristic feature of asexual reproduction?- a) It can involve any part of the body.
- b) It results in genetic diversity.
- c) It involves complex processes like fertilization.
- d) It requires male and female gametes.
Correct answer is option 'A'. Can you explain this answer?
What is a characteristic feature of asexual reproduction?
a)
It can involve any part of the body.
b)
It results in genetic diversity.
c)
It involves complex processes like fertilization.
d)
It requires male and female gametes.
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Asexual reproduction is unique in that it can involve any part of the organism's body, allowing for simpler processes such as binary fission or budding. This method does not require gametes and results in offspring that are genetically identical to the parent.
In what way do identical twins differ from fraternal twins?- a) They are always of different genders.
- b) They are genetically identical.
- c) They come from two separate eggs.
- d) They develop from different fertilization events.
Correct answer is option 'B'. Can you explain this answer?
In what way do identical twins differ from fraternal twins?
a)
They are always of different genders.
b)
They are genetically identical.
c)
They come from two separate eggs.
d)
They develop from different fertilization events.
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Orion Classes answered |
Identical twins are formed when a single fertilized egg splits into two embryos, resulting in genetically identical siblings. In contrast, fraternal twins come from two different eggs fertilized by separate sperm.
What happens to the remnants of the Graafian follicle after ovulation?- a) They disappear completely.
- b) They produce more eggs.
- c) They transform into the corpus luteum.
- d) They become a new ovum.
Correct answer is option 'C'. Can you explain this answer?
What happens to the remnants of the Graafian follicle after ovulation?
a)
They disappear completely.
b)
They produce more eggs.
c)
They transform into the corpus luteum.
d)
They become a new ovum.
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Orion Classes answered |
After ovulation, the remnants of the Graafian follicle transform into the corpus luteum, which is crucial for hormone production, particularly progesterone, that supports early pregnancy.
What is the primary function of the acrosome in a sperm cell?- a) To provide energy
- b) To aid in swimming
- c) To help the sperm enter the ovum
- d) To store genetic material
Correct answer is option 'C'. Can you explain this answer?
What is the primary function of the acrosome in a sperm cell?
a)
To provide energy
b)
To aid in swimming
c)
To help the sperm enter the ovum
d)
To store genetic material
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Orion Classes answered |
The acrosome contains enzymes that help the sperm penetrate the outer membrane of the ovum, facilitating fertilization. This is a critical step in the reproductive process.
What is the primary purpose of amniotic fluid?- a) To provide nutrients to the fetus
- b) To support the umbilical cord
- c) To facilitate gas exchange
- d) To cushion and protect the embryo
Correct answer is option 'D'. Can you explain this answer?
What is the primary purpose of amniotic fluid?
a)
To provide nutrients to the fetus
b)
To support the umbilical cord
c)
To facilitate gas exchange
d)
To cushion and protect the embryo
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Orion Classes answered |
Amniotic fluid acts as a protective cushion around the embryo, safeguarding it from physical shocks and injuries during development. This fluid also provides a stable environment for growth.
What is the duration of a typical human gestation period?- a) 280 days
- b) 240 days
- c) 180 days
- d) 300 days
Correct answer is option 'A'. Can you explain this answer?
What is the duration of a typical human gestation period?
a)
280 days
b)
240 days
c)
180 days
d)
300 days
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The average gestation period in humans is approximately 280 days, which allows sufficient time for the embryo to develop into a fully formed fetus ready for birth.
Which part of the male reproductive system is responsible for storing sperm?- a) Seminal vesicles
- b) Testes
- c) Prostate gland
- d) Vas deferens
Correct answer is option 'D'. Can you explain this answer?
Which part of the male reproductive system is responsible for storing sperm?
a)
Seminal vesicles
b)
Testes
c)
Prostate gland
d)
Vas deferens
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Orion Classes answered |
The vas deferens is a duct that transports sperm from the epididymis and also serves as a storage site before ejaculation. This structure is essential for the male reproductive process.
What marks the beginning of a female's reproductive phase?- a) Menarche
- b) Menopause
- c) Ovulation
- d) Gestation
Correct answer is option 'A'. Can you explain this answer?
What marks the beginning of a female's reproductive phase?
a)
Menarche
b)
Menopause
c)
Ovulation
d)
Gestation
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Orion Classes answered |
Menarche signifies the onset of menstruation, typically occurring around age 13, marking the beginning of a female's reproductive phase. It is a key milestone in puberty.
What is the primary hormone secreted by the corpus luteum?- a) Progesterone
- b) Oestrogen
- c) Testosterone
- d) Follicle-stimulating hormone
Correct answer is option 'A'. Can you explain this answer?
What is the primary hormone secreted by the corpus luteum?
a)
Progesterone
b)
Oestrogen
c)
Testosterone
d)
Follicle-stimulating hormone
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Progesterone is primarily secreted by the corpus luteum after ovulation. It plays a significant role in preparing the uterine lining for the potential implantation of a fertilized embryo.
Which hormone is primarily responsible for the thickening of the uterine lining during the follicular phase?- a) Follicle-stimulating hormone
- b) Progesterone
- c) Luteinizing hormone
- d) Oestrogen
Correct answer is option 'D'. Can you explain this answer?
Which hormone is primarily responsible for the thickening of the uterine lining during the follicular phase?
a)
Follicle-stimulating hormone
b)
Progesterone
c)
Luteinizing hormone
d)
Oestrogen
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Oestrogen is responsible for stimulating the thickening of the uterine endometrium during the follicular phase, preparing it for a potential pregnancy.
What role does progesterone play post-ovulation?- a) It is responsible for the thickening of the uterine lining.
- b) It stimulates the release of the ovum.
- c) It prepares the uterus for implantation.
- d) It is secreted by the follicle before ovulation.
Correct answer is option 'C'. Can you explain this answer?
What role does progesterone play post-ovulation?
a)
It is responsible for the thickening of the uterine lining.
b)
It stimulates the release of the ovum.
c)
It prepares the uterus for implantation.
d)
It is secreted by the follicle before ovulation.
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After ovulation, progesterone is released by the corpus luteum and plays a vital role in preparing the uterus for the implantation of a fertilized egg, ensuring a suitable environment for early pregnancy.
At what stage of development is an embryo referred to as a fetus?- a) During implantation
- b) After 7 weeks of gestation
- c) At conception
- d) At birth
Correct answer is option 'B'. Can you explain this answer?
At what stage of development is an embryo referred to as a fetus?
a)
During implantation
b)
After 7 weeks of gestation
c)
At conception
d)
At birth
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Orion Classes answered |
An embryo is referred to as a fetus after approximately 7 weeks of gestation when it begins to develop recognizable features of a baby. This stage marks significant development of organs and body systems.
How does the placenta assist in fetal development?- a) It produces only one hormone.
- b) It removes waste products from the fetus.
- c) It acts as a barrier against all viruses.
- d) It only provides nutrients.
Correct answer is option 'B'. Can you explain this answer?
How does the placenta assist in fetal development?
a)
It produces only one hormone.
b)
It removes waste products from the fetus.
c)
It acts as a barrier against all viruses.
d)
It only provides nutrients.
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Orion Classes answered |
The placenta plays a crucial role by providing oxygen and nutrients to the developing fetus while also removing waste products like carbon dioxide and urea. It is vital for the health of both the mother and the fetus.
During which phase of the menstrual cycle is the Graafian follicle expected to rupture?- a) Luteal Phase
- b) Ovulatory Phase
- c) Menstrual Phase
- d) Follicular Phase
Correct answer is option 'B'. Can you explain this answer?
During which phase of the menstrual cycle is the Graafian follicle expected to rupture?
a)
Luteal Phase
b)
Ovulatory Phase
c)
Menstrual Phase
d)
Follicular Phase
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Orion Classes answered |
The ovulatory phase occurs around the 13th or 14th day of the menstrual cycle when the Graafian follicle ruptures, releasing a matured ovum. This is crucial for potential fertilization and subsequent pregnancy.
What triggers the shedding of the uterine lining during the menstrual cycle?- a) The formation of the corpus luteum
- b) Rising levels of progesterone
- c) A decrease in hormone levels
- d) The disintegration of the ovum
Correct answer is option 'C'. Can you explain this answer?
What triggers the shedding of the uterine lining during the menstrual cycle?
a)
The formation of the corpus luteum
b)
Rising levels of progesterone
c)
A decrease in hormone levels
d)
The disintegration of the ovum
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The shedding of the uterine lining occurs when hormone levels, particularly estrogen and progesterone, decrease, signaling the start of the menstrual phase of the cycle.
Which of the following describes budding in hydra?- a) A form of sexual reproduction
- b) A fertilization process
- c) A method of asexual reproduction
- d) A phase of the menstrual cycle
Correct answer is option 'C'. Can you explain this answer?
Which of the following describes budding in hydra?
a)
A form of sexual reproduction
b)
A fertilization process
c)
A method of asexual reproduction
d)
A phase of the menstrual cycle
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Budding in hydra is a form of asexual reproduction where a new individual develops from a bud on the parent organism. This process allows for rapid population growth without the need for gametes.
What defines secondary sexual characteristics?- a) They do not influence reproduction.
- b) They develop during puberty.
- c) They are the same in males and females.
- d) They are present at birth.
Correct answer is option 'B'. Can you explain this answer?
What defines secondary sexual characteristics?
a)
They do not influence reproduction.
b)
They develop during puberty.
c)
They are the same in males and females.
d)
They are present at birth.
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Secondary sexual characteristics are features that emerge during puberty due to increased levels of sex hormones, distinguishing males from females and influencing physical appearance and reproductive capabilities.
What occurs during implantation?- a) The ovum is released from the ovary.
- b) The sperm fertilizes the ovum.
- c) The placenta forms.
- d) The embryo attaches to the uterine lining.
Correct answer is option 'D'. Can you explain this answer?
What occurs during implantation?
a)
The ovum is released from the ovary.
b)
The sperm fertilizes the ovum.
c)
The placenta forms.
d)
The embryo attaches to the uterine lining.
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Orion Classes answered |
Implantation is the process where the developing embryo attaches itself to the endometrial lining of the uterus, which is essential for establishing a connection with the mother’s blood supply for further development.
Chapter doubts & questions for The Reproductive System - Biology Class 10 ICSE 2025 is part of Class 10 exam preparation. The chapters have been prepared according to the Class 10 exam syllabus. The Chapter doubts & questions, notes, tests & MCQs are made for Class 10 2025 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests here.
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Biology Class 10 ICSE
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