Question

a.Which criteria are used for the classification of plants. Explain with reasons.​

Answer 1

Explanation:

Criteria used for the classification of plants: (i) Thallophyta: Plant body without roots, leaves. Commonly called algae. (i) Bryophyta: Differentiated into stem and leaf like structure;.

Answer 2

Answer:

Plant Kingdom – Plantae

Level of classification is based on the following three criteria:

1.Plant body– whether the body has well-differentiated structures or not.

2.Vascular system-whether the plant has vascular system for transportation of substances or not.

3.Seed formation– whether the plant bears flowers and seeds or not; if it does, then whether it is enclosed within fruits or not.

The two subgroups are:-

Cryptogams- reproduction through spores and no seed formation. They include subgroups Thallophyta, Bryophyta and Pteridophyta

Phanerogams-they have specialized reproductive organs and they produce seeds. Gymnosperms and Angiosperms belong to this group.

Explanation:

Plants are divided on the basis of various characteristics like: Differentiation of plant body into roots, stem and leaves. Vascular tissues. Production of seeds.