Question

note on nutritional diversity in angiosperms
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Answer 1

Answer:

The following points highlight the three special modes of nutrition in angiosperms. The modes are: A. Parasitic Angiosperms B. Insectivorous Plants and C. Saprophytic Angiosperms.

Explanation:

A. Parasitic Angiosperms:

These plants obtain their nourishment from other living plants called as the hosts (which are also angiosperms) by means of special roots called as haustoria. The haustoria penetrate the tissue of the host to make connection with its vascular tissue to draw readymade food from the phloem and water and mineral salts from xylem.

B. Insectivorous Plants:

These plants are capable of manufacturing carbohydrates due to the presence of chlorophyll, but because they grow in swampy soils which are deficient in nitrogen they cannot synthesize enough proteins. They overcome this deficiency by catching small insects and di­gesting them. Their leaves are specially modified in various ways for this purpose.

C. Saprophytic Angiosperms:

Certain angiosperms like Monotropa (Fig. 12.9) and Neottia (Bird’s Eye Nest) which lack chlorophyll grow on soil rich in humus or dead organic matter in the forests. These plants (which are orchids) obtain their nourishment from the humus through mycorrhiza i.e., the fun­gal filaments associated with their roots.

Answer 2

Answer

The following feature the three uncommon methods of sustenance in angiosperms. The modes are: A. Parasitic Angiosperms B. Insectivorous Plants and C. Saprophytic Angiosperms.

A. Parasitic Angiosperms:

These plants acquire their sustenance from other living plants called as the hosts (which are additionally angiosperms) by methods for unique roots called as haustoria. The haustoria enter the tissue of the host to make association with its vascular tissue to draw readymade nourishment from the phloem and water and mineral salts from xylem.

B. Insectivorous Plants:

These plants are equipped for assembling starches because of the nearness of chlorophyll, but since they develop in swampy soils which are insufficient in nitrogen they can't integrate enough proteins. They conquer this lack by getting little creepy crawlies and di­gesting them. Their leaves are uniquely changed in different manners for this reason.

C. Saprophytic Angiosperms:

Certain angiosperms like Monotropa and Neottia (Bird's Eye Nest) which need chlorophyll develop on soil wealthy in humus or dead natural issue in the backwoods. These plants (which are orchids) get their sustenance from the humus through mycorrhiza i.e., the fun­gal fibers related with their underlying foundations.