Question

How many characters are valid for planaria
(i) Freshwater organism
(ii) Nocturnal
(iii) Cannibalism
(iv) Transverse binary fission
(v) Evertable pharynx

• A. $5$
• B. $3$
• C. $4$
• D. $2$

Answer 1

The correct option is A $5$

1. Planaria are common to many parts of the world, living in freshwater ponds and rivers. Some species are terrestrial and are found under logs, in or on the soil, and on plants in humid areas.

2. Planaria show nocturnal animal behavior characterized by being active during the night and sleeping during the day.

3. Planaria eat living or dead small animals of other and their own species that they suck up with their muscular mouths. So, they show cannibalism, which is the act of one individual of a species consuming all or part of another individual of the same species as food.

4. Planaria exhibit transverse binary fission which is a type of asexual reproduction in which a prokariotic organism undergoes fission and split transversely, along the transverse axis.

5. The pharynx of planaria is everted in nature and connects the mouth to the gastrovascular cavity.

So, the correct option is '5'.