Question

2.
Give reasons for the following:
(a) Mushroom is a saprotroph.
(b) Sun is the ultimate source of energy for all living organisms.
(c) The leaf of a plant dies out if its stomata are blocked.
(d) Leaf is known as the food factory of the plant. (e) lichen is a ' living partnership' between a fungus and an alga and tihis 'partnership' is beneficial to both.​

Answer 1

Explanation:

a) Mushroom grows on dead and decaying matter

b)Sun is the ultimate source of energy because without sun plants can't grow and all living beings are dependent on plants for sustainability of life

c) It no longer is useful for plant as it can't prepare food for it and it will be shedded.

d) leaf is known as the food factory because it is responsible for photosynthesis.

e) Because lichen takes nutrients for them and help them with what they need