Class 7 Science Chapter 8 Practice Question Answers - Reproduction in Plants

Q1. Bisexual flowers are those flowers which have both:
(a) pollen grains and stamens
(b) stamens and pistils
(c) ovary and pollen grains
(d) pistils and ovary
Ans: (b)
Bisexual flowers are those flowers which have both stamens and pistils.

Q2. The plants which have unisexual flowers are:
(a) torai
(b) lauki
(c) pumpkin
(d) all of these
Answer: (d)
Lauki, torai and pumpkin all are unisexual flowers.

Q3. Seeds and fruits are formed by:
(a) ovary forms fruits and ovules form seeds
(b) ovary forms seeds and ovules form fruits
(c) pollen grains form seeds and anther forms fruit
(d) pollen grains form fruits and anther forms seed.
Ans: (a) ovary forms fruits and ovules form seeds
Ovary forms fruits and ovules form seeds

Q4. The male reproductive part is:
(a) pistil
(b) stamen
(c) ovary
(d) flower
Ans: (b)
The male reproductive part is stamen.

Q5. The flowers which contain either pistil or stamens are called:
(a) bisexual flowers
(b) sexual flowers
(c) unisexual flowers
(d) pollination flower
Answer: (c)
The flowers which contain either pistil or stamen are called unisexual flowers.

Q6. Female reproductive part is:
(a) stamen
(b) pollen grain
(c) bud
(d) pistil
Answer: (d)
Female reproductive part is pistil.

Q7. The flowers which contain both stamens and pistils are:
(a) unisexual flowers
(b) bisexual flowers
(c) sexual flowers
(d) asexual flowers
Ans: (b)
The flowers which contain both stamens and pistil are bisexual flowers.

Q8. The process in which plant can give rise to new plants without seeds is called:
(a) asexual reproduction
(b) sexual reproduction
(c) pollination
(d) fragmentation
Answer: (a)
The process in which plant can give rise to new plants without seeds is called asexual reproduction

Q9. are formed in fungi:
(a) Pollen grains
(b) Seeds
(c) Buds
(d) Spores
Ans: (d)
Spores are formed in fungi.

Q10. The production of new individuals from their parents in known as:
(a) pollination
(b) reproduction
(c) fertilisation
(d) fragmentation
Answer: (b)
The production of new individuals from their parent plant is called reproduction.

Q11. The process in which new plants are produced from different vegetative parts such as leaves,
stems and roots is called:
(a) reproduction
(b) fragmentation
(c) vegetative propogation
(d) fertilisation
Answer: (c)
The process in which new plants are produced from different vegetative parts such as leaves,

stems etc., is called vegetative propogation.

Q12. A small bulb like projection, which comes out of yeast all is called:
(a) bud
(b) spores
(c) zygete
(d) flower
Answer: (a)
A small bulb like projection, which comes out of yeast cell is called bud.

Q13. A division of elongated parent cell into two daughter cell is called:
(a) fragmentation
(b) pollination
(c) binary fission
(d) fertilisation
Answer: (c)
A division of elongated parent cell into two daughter cell is called binary fission.

Q14. Splitting up of filaments of algae in two or more than two parts is called:
(a) fertilisation
(b) fragmentation
(c) pollination
(d) reproduction
Ans: (b)
Splitting up of filaments of algae in two or more than two parts is called fragmentation.

Q15. In sexual reproduction, a male and a female gametes fuse to form a:
(a) flower
(b) fungi
(c) spore
(d) zygote
Answer: (d)
In sexual reproduction , a male and female gametes fuse to form zygote.

Q16. The transfer of pollen from the anther to the stigma of a flower is called:
(a) fragmentation
(b) fertilisation
(c) pollination
(d) reproduction
Ans: (c)
The transfer of pollen grains from another to stigma of a flower is called pollination.

Q17. If the pollen lands on the stigma of the same flower, it is called:
(a) cross pollination
(b) self pollination
(c) right pollination
(d) pollination
Ans: (b)
If the pollen lands on the stigma of the same flower, it is called self pollination.

Q18. When you add yeast to dough, it rises because:
(a) yeast cell reproduce by budding
(b) budding yeast cells form chains
(c) the rapidly reproducing yeast cells release carbon dioxide due to respiration
(d) of the bulk of the new yeast cells.
Ans: (c)
When you add yeast to dough, it rises because the rapidly reproducing yeast cells release CO2 due to respiration.

Q19. In onion and garlic, new plants are produced from:
(a) bulbs
(b) tubes
(c) leaf buds
(d) subaerial stems
Answer: (a)
In onion and garlic, new plants are produced from bulbs.

Q20. Tiny cells protected by a thick wall and capable of producing new plants are called:
(a) seeds
(b) spores
(c) buds
(d) gametes
Ans: (c) buds
Tiny cells protected by thick wall and capable of producing new plants are called buds.

Q21. Rose and lemon are grown from:
(a) tubers
(b) bulbs
(c) stemcuttings
(d) leaf buds
Ans: (c)
Rose and lemon are grown from stem cuttings.

Q22. The mode of reproduction in which an individual produces off spring without the help of another individual is called:
(a) asexual reproduction
(b) fertilisation
(c) spore formation
(d) vegetative reproduction
Answer: (a)
The mode of reproduction in which an individual produces offspring without the help of another individual is called asexual reproduction.

Q23. Terms and mosses reproduce by:
(a) fertilisation
(b) vegetation
(c) spore formation
(d) pollination
Ans: (c)
Terms and mosses are produces by spore formation.

Q24. The reproduction part of a plant is the:
(a) leaf
(b) stem
(c) root
(d) flower
Ans: (d)
The reproductive part of a plant is the flower.

Q25. The process of fusion of the male and the female gametes is called:
(a) fertilisation
(b) pollination
(c) reproduction
(d) seed formation
Ans: (a)
The process of fusion of the male and the female gametes is called fertilisation.

Q26. Mature ovary forms the:
(a) seed
(b) stamen
(c) pistil
(d) fruit
Ans: (d)
Mature ovary forms the fruits.

Q27. A spare producing plant is:
(a) rose
(b) bread mould
(c) potato
(d) ginger
Ans: (b)
A spare producing plant is bread mould.

Q28. Bryophyllum can reproduce by its:
(a) stem
(b) leaves
(c) roots
(d) flower
Answer: (b)
Bryophyllum can reproduce by its leaves.

Q29. The seeds dispersed by birds and animals are:
(a) less smell
(b) very smelly
(c) with smell and nectar
(d) none of these
Answer: (c)
The seeds dispersed by birds and animals are with smell and nectar.

Q30. Which parts of the flower forms fruit:
(a) seed
(b) ovary
(c) petals
(d) stamen
Ans: (b)
Ovary forms fruit.