Ans: Uterus
Explanation: The uterus is a muscular organ in females where a fertilized egg implants and develops into a fetus during pregnancy.
Q2. The _________ is primary reproductive organ in male.
Ans: Testis
Explanation: The testes are the primary reproductive organs in males that produce sperm and the hormone testosterone.
Q3. The _________ is connecting structure which helps in the transfer of substance to and from the foetus body.
Ans: Placenta
Explanation: The placenta connects the fetus to the uterine wall, allowing the exchange of nutrients, oxygen, and waste between the mother and fetus.
Q4. The process of laying eggs in a large number is called _________.
Ans: Super ovulation
Explanation: Super ovulation is the process in which multiple eggs are released at the same time, common in animals that lay numerous eggs.
Q5. _________ is the primary reproductive organ in females.
Ans: Ovary
Explanation: The ovaries are the primary reproductive organs in females that produce eggs and hormones like estrogen and progesterone.
Q6. Testes produce _________.
Ans: Testosterone
Explanation: Testosterone is a hormone produced by the testes that is responsible for male secondary sexual characteristics and sperm production.
Q7. The cells involved in sexual reproduction are called _________.
Ans: Germ cells
Explanation: Germ cells are reproductive cells (sperm and eggs) that fuse during fertilization to form a new organism.
Q8. In animals like fish and frog _________ fertilization take place.
Ans: External
Explanation: External fertilization occurs outside the body, where eggs and sperm are released into the water for fertilization.
Q9. The human zygote gets implanted in the _________.
Ans: Uterus
Explanation: After fertilization, the zygote travels to the uterus and implants itself in the uterine lining to develop into an embryo.
Q10. IVF stands for _________.
Ans: In vitro fertilization
Explanation: IVF is a medical procedure where an egg is fertilized by sperm outside the body and then implanted into the uterus.
Q1: Internal fertilization takes place outside the female's body.
Ans: False
Explanation: Internal fertilization occurs inside the female's body, where sperm fertilizes the egg.
Q2: Birds and snakes are oviparous animals.
Ans: True
Explanation: Oviparous animals lay eggs that hatch outside the mother’s body.
Q3: A tadpole is the young one of a frog.
Ans: True
Explanation: A tadpole is the larval stage of a frog, which later undergoes metamorphosis to become an adult frog.
Q4: Animals like Amoeba multiply by budding.
Ans: False
Explanation: Amoeba reproduces by binary fission, not budding. Budding is seen in organisms like Hydra.
Q5: The fusion of male and female sex cells is called fertilization.
Ans: True
Explanation: Fertilization is the process where a male sperm cell fuses with a female egg cell to form a zygote.
Answer:
1. Tapeworm - (e) Hermaphrodite:
Tapeworms have both male and female reproductive organs, making them hermaphrodites.
2. Vasectomy - (d) Vas deferens:
Vasectomy is a surgical procedure that blocks the vas deferens to prevent sperm release.
3. Copper-T - (c) IUCD:
Copper-T is an intrauterine contraceptive device used to prevent pregnancy.
4. Implantation - (a) Uterus:
Implantation occurs when the fertilized egg attaches to the lining of the uterus.
5. AIDS - (b) STD:
AIDS is a sexually transmitted disease caused by the HIV virus.
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2. What is the difference between sexual and asexual reproduction? | ![]() |
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4. What are the advantages of asexual reproduction? | ![]() |
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