Question

21. What adaptation prevents the shoot (above-ground) from drying out in terrestrial plants?

22. What allows ferns to grow taller than mosses and liverworts?

23. What characteristic is found in conifers and flowering plants that frees them from water

during sexual reproduction?

24. Give two ways animals function to increase reproductive success in flowering plants.

1.

2.

Answer 1

Ans(21): Shoots have layer of waxy cuticle on them. This layer prevents the water loss and prevent them frm drying out.

Ans(22): Ferns have vascular system which develop stem in ferns made up of stiff vascular tissues. Due to this, fern plants get support and grow higher.

Ans(23): In conifers and flowering plants pollination and fertlisation is independent of water. They produce seeds and seed development is also water independent. These characteristics frees them from water during sexual reproduction.

Ans(24): (1)Animals help in pollination

(2) Animals help in seed dispersal