CG Board Class 7 Science Reproduction in the Living Organisms Textbook exercises and question answers.
Choose the correct answer :
I These are the reproductive organs in a flower:
(a) Calyx and corolla
(b) Calyx and androecium
(c) Gynoecium and androecium
(d) Corolla and gynoecium
Answer – (c) Gynoecium and androecium
II A seed is formed from:
(a) Egg
(b) Ovary
(c) Anther
(d) Ovule
Answer – (d) Ovule
III Sperms are produced in :
(a) Ovary
(b) Testes
(c) Uterus
(d) Seminal vesicle
Answer – (b) Testes
IV In human beings, the eggs are fertilized in :
(a) ovary
(b) uterus
(c) fallopian tubes
(d) out side the body
Answer – (c) Fallopian tubes
Fill in the blanks :-
1) The fusion of male and female gametes is called ………………………..[fertilization]
2) After fertilization of flowers the ovary gets converted into……………….[fruit]
3) The reproduction in sugarcane is usually through ……………………..[stem cuttings]
4) Amoeba reproduce asexually through ……………………………[binary fission]
5) The structure formed during asexual reproduction in Hydra is called ……………[bud]
Identify whether these statements are correct or incorrect.
1) The flowers of pumpkin are unisexual. [T]
2) Embryos and seeds are produced during asexual reproduction.[T]
3) Rose plants are usually grown from seeds.[F]
4) Sexual reproduction requires the fusion of the sperm with the egg.[T]
5) Amoeba usually reproduce sexually.[F]
6) There is internal fertilization in fishes.[F]
Explain the following in 2-3 lines
1) Oviparous
Oviparous: Refers to animals that lay eggs, and the development of the embryo occurs outside the mother’s body, such as in birds and reptiles.
2) Viviparous
Viviparous: Describes animals that give birth to live offspring, and the embryo develops within the mother’s body, as seen in mammals like humans.
