Navigate

In which animal is nerve cell present but brain absent

In which animal is nerve cell present but brain absent?

Options

(a) Sponge
(b) Earthworm
(c) Cockroach
(d) Hydra

Correct Answer:

Hydra

Explanation:

A primitive type of nervous system,without brain is found in the form of intra epidernal nerve net.However,there is no brain in Hydra to coordinate the response.

AIPMT2002
admin:

Related Questions

  1. The modern man differs from the apes in
  2. How many pyrrole rings are there in porphyrin
  3. Phagocytosis and pinocytosis are collectively termed as
  4. A young infant may be feeding entirely on mothers milk
  5. How many chromosomes are there in endosperm cell of Zea mays?