Reproduction in Plants

Q1. Fill in the blanks.

                           i.        Production of new individuals from the vegetative part of parent is called vegetative propagation.

                          ii.        A flower may have either male or female reproductive parts. Such a flower is called unisexual.

                         iii.        The transfer of pollen grains from the anther to the stigma of the same or of another flower of the same kind is known as pollination.

                         iv.        The fusion of male and female gametes is termed as fertilisation.

                          v.        Seed dispersal takes place by means of wind, water and animals.

                         vi.        Anther contains pollen grains which produce male gametes.

Q2. True/False

                           i.        A spore producing organism is bread mould. True

                          ii.        Bryophyllum can reproduce by its stem. False

                         iii.        A bisexual flower has both the male and the female reproductive parts. True

                         iv.        All organisms multiply or reproduce their own kind. True

                          v.        In plants there are three modes of reproduction. False

                         vi.        Leaf is the reproductive part of a plant. False

Q3. Which is the reproductive part of a plant?

Ans. Flower is the reproductive part of a plant.

Q4. Name the cell formed as product of fertilization.

Ans. The cell which results after fusion of the gametes is called a zygote.

Q5. What is the male reproductive part of a flower?

Ans. Stamens are the male reproductive parts of flowers.

Q6. What is the female reproductive part of a flower?

Ans. Pistil is the female reproductive part of a flower.

Q7. What mature ovary turns into?

Ans. Mature ovary turns into a fruit.

Q8. What is a node?

Ans. A node is a part of the stem/branch at which a leaf arises.

Q9. Give examples of plants that reproduce by means of spores.

Ans. Plants such as moss and ferns reproduce by means of spores.

Q10. How fungi grow on bread?

Ans. Fungi on a bread piece grow from spores which are present in the air.

Q11. What are the two modes of reproduction in plants?

Ans. In plants there are two modes of reproduction, asexual and sexual.

Q12. What is fertilisation?

Ans. The process of fusion of male and female gametes (to form a zygote) is called fertilization.

Q13. What is reproduction?

Ans. The production of new individuals from their parents is known as reproduction.

Q14. Which plant grows from roots?

Ans. The roots of some plants can also give rise to new plants. Sweet potato and dahlia are examples.

Q15. How do cacti reproduce?

Ans. Plants such as cacti produce new plants when their parts get detached from the main plant body. Each detached part can grow into a new plant.

Q16. What is pollination? Name its types.

Ans. The transfer of pollen from the anther to the stigma of a flower is called pollination. Pollination is of two types, self-pollination and cross-pollination.

Q17. What are unisexual flowers? Give examples.

Ans. Flowers which contain either only pistil or only stamens are called unisexual flowers. Corn, papaya and cucumber produce unisexual flowers.

Q18. What are bisexual flowers? Give examples.

Ans. Flowers which contain both stamens and pistil are called bisexual flowers. Mustard, rose and petunia have bisexual flowers.

Q19. What are the different modes of asexual reproduction?

Ans. There are several methods of asexual reproduction such as fragmentation, budding, spore formation and vegetative propagation.