Question

Observe the diagram given below and answer the following questions :

(a) Identify the diagram.

(b) Name the group to which it belongs.

(c) Draw and label A – E.

Answer 1

(a)

1. The above diagram is of Euglena.
2. Euglena is a unicellular free-living organism.

(b)

1. It belongs to the kingdom Protista.
2. Protista includes unicellular, eukaryotic and aquatic organisms.
3. Some organisms use appendages such as hair-like cilia (e.g paramoecium) or whip-like flagella (e.g Euglena) for their locomotion.
4. Euglena belongs to the class Mastigophora. These organisms' flagella act as locomotory organs.

(c) Labelled diagram:

1. Part A-The flagellum is used for locomotion.
2. Part B- Eyespot contains photoreceptors, that help in the detection of light and are involved in phototaxis.
3. Part C- Contractile vacuole removes extra water.
4. Part D- Chloroplast is used to synthesize paramylon (polymer of glucose).
5. Part E- The nucleus contains genetic information.