Question

Observe the diagram given below and answer the following questions :

(a) Identify the plant.

(b) Name the group to which it belongs.

(c) Mention one of its characteristic features.

Answer 1

(a)

1. The plant shown in the picture is Spirogyra.
2. Spirogyra is an alga that is found freely floating.
3. They are mostly found in freshwater and are also known as “water silk or pond silk”.
4. It belongs to the phylum Chlorophyta.

(b)

1. Spirogyra belongs to group Thallophyta.
2. Thallophyta are a group of algae that do not have roots, stems, leaves or any other part present in vascular plants.

(c) Some of the characteristic features of spirogyra are:

1. They contain chloroplasts.
2. They contain cellulose and pectin in their cell walls.