Question

Which criterias are used for classifying the plant

Answer 1

Answer:

Criteria used for classification of the plant kingdom:

1. By observation of the presence or absence of organs or distinct components they are divided as thallophytic, bryophyte, pteridophytes, gymnosperms, and angiosperms.

2. The oresence or absence of several conducting tissues for conduction of water and food. Bryophytes do not possess conducting tissues whereas pteridophyta, gymnosperms, and angiosperms possess.

3. The presence or absence of seed. Pteridophytes do not have seed whereas gymnosperms and angiosperms have seeds.

4. Development of seeds with or without coat. Without seed coat as in gymnosperms (naked) or with seed coat as in angiosperms (covered).

5. The number of seed coats. In monocot there is one cotyledon and dicot have two.