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.
Answers
1) Mushroom is saprotroph because it has no chlorophyll to make its own food.So it grows on dead and decaying matters and take their food from them. Mushroom is a saprotroph because it does not has chlorophyll content in its leaves.
2)The sun is called the ultimate source of energy because it is the source of almost all energies of the earth. Plants convert light energy from the sun into chemical energy (food) by the process of photosynthesis. Animals eat plants and use that same chemical energy for all their activities.
3)The 'leaves of a plants dies' when 'stomata are blocked'. ... When the stomata of a leaf are blocked, the process of "photosynthesis" stops and so does the gaseous exchange and water vapour exchange. The leaf dies out of suffocation and unavailability of food.
4) because the process photosynthesis made in leaf. so ,Leaf is known as the food factory of the plant.