Question

If Hydra is broken into pieces
A. Hydra will die
B. Every fragment will grow into a complete hydra
C. Some fragments will form complete hydra
D. Hydra will undergo sexual reproduction

Answer 1

The organisms in the world’s diversity reproduce to form the new ones. They do not necessarily need a partner for copulation or intercourse. Various organisms can reproduce only by themselves aloof.

Complete answer:
There are two modes of reproduction- sexual and non-sexual. Sexual reproduction needs two partners for producing a new organism.
The non-sexual mode includes regeneration, budding etc. In this, the part of the organism will break off, they have the regenerability capability. The cell can divide and form a new organism. The daughters are formed from the parents in this manner.

Hydra is one of the primitive organisms which reproduces by the asexual means. It has a low level of organization. It does not have a differentiation in the body so when a part of the body breaks, it will regenerate into a new hydra.

Option A: Hydra will die: It does not die on breaking any of its parts.

Option B: Every fragment will grow into a complete hydra: Every part on breaking will form a new organism, so it regenerates.

Option C: Some fragments will form complete hydra: Not some, all the broken parts will regenerate.

Option D: Hydra will undergo sexual reproduction: It is an asexual organism which will undergo regeneration.

Hence, the correct answer is option (B).

Note: Hydra is the serpentine water monster. They have stinging cells. They can kill fish. They have a very small size of approximately 2 inches. They belong to the phylum CNidaria. They have a very long life of about a thousand years.