EASY
7th Andhra Pradesh Board
IMPORTANT
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How do plants produce so much food that they are able to feed other organisms who is dependent on them?

Important Questions on Nutrition in Plants

MEDIUM
7th Andhra Pradesh Board
IMPORTANT

Have you seen yellow thread-like structures twining around the stem, branches, and leaves of some trees? Fig shows such a plant. What type of nutrition does that plant have?

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MEDIUM
7th Andhra Pradesh Board
IMPORTANT

Plants get water from the soil through their roots while the process of photosynthesis takes place in the leaves.

So how does the water reach the leaves from the roots?

HARD
7th Andhra Pradesh Board
IMPORTANT

Plants get water from the soil through their roots while the process of photosynthesis takes place in the leaves.

What path does it follow?

MEDIUM
7th Andhra Pradesh Board
IMPORTANT

Let us recall the experiment done in the chapter “Plants: Parts and Function” of class VI, which showed how water is transported in the plant body.

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On the basis of this experiment, what conclusion can you draw about the functions of the root and stem in the nutrition of plants?

MEDIUM
7th Andhra Pradesh Board
IMPORTANT
Why is it necessary to irrigate the fields after sprinkling urea? Think it over and answer with reasons.
MEDIUM
7th Andhra Pradesh Board
IMPORTANT
The farmer sprinkles urea in the soil of his field. How does the urea affect the leaves of the crop?
EASY
7th Andhra Pradesh Board
IMPORTANT

We know that plants take water through their roots and air through the stomata of their leaves (there are some other parts like loose tissues and lenticels present on the bark of plant through which exchange of air takes place). We also know that leaves contain the green substance, chlorophyll.

What else is needed for photosynthesis?

HARD
7th Andhra Pradesh Board
IMPORTANT
Give experimental proof that carbon dioxide and water are needed for the production of starch.