Question

This is a flagellate protist.

Justify it to be a connecting link between plants and animals.

• A. A suggest animal nature and B and C depicts plant nature.
• B. B suggests animal nature and A and C depicts plant nature.
• C. C suggests animal nature and A and B depicts plant nature.
• D. A and C suggests animal nature and B depicts plant nature.

Answer 1

The correct option is A A suggest animal nature and B and C depicts plant nature.

Euglena is unicellular flagellated eukaryote that lacks cell wall but have pellicle which is a semi-rigid proteinaceous structure; it is autotrophic due to presence of chloroplast (C) and store its food as paramylon, a β-1,3-linked glucan and oil droplets (B). These characters place it in plant kingdom. While presence of a photosensitive structure called as stigma and flagella (A), which orients the movement of the cell towards light makes it close to animal kingdom. Correct answer is A. Chloroplasts are the double membrane organelles, found exclusively in plants that serve as site for photosynthesis; option B is incorrect. Thus, the correct answer is option A.