In addition to carbon dioxide and water, state two other conditions necessary for the process of photosynthesis to take place.
Water absorption through roots can be increased by keeping the potted plants:
(a) in the shade
(b) in dim light
(c) under the fan
(d) covered with a polythene bag
The autotrophic mode of nutrition requires
(a) carbon dioxide and water.
(d) all of the above.
Most of the plants absorb nitrogen in one of the following forms. This is:
(b) nitrates and nitrites
(d) atmospheric nitrogen