Question

For the figures give the type of animal body cavities they represent.

• A. 1.-PseudoCoelomate , 2.- Coelomate , 3.- Acoelomate
• B. 1.-Acoelomate , 2.- Coelomate , 3.-PseudoCoelomate
• C. 1.- Coelomate , 2.- Acoelomate , 3.-PseudoCoelomate
• D. 1.-Acoelomate , 2.-Pseudocoelomate , 3.-Coelomate

Answer 1

The correct option is D

1.-Acoelomate , 2.-Pseudocoelomate , 3.-Coelomate

These figures represent the organisation of body cavity in animals.

i). If the body cavity is absent or filled up with tissue, it is called acoelome and animals

are acoelomates.

ii). If the body cavity is present and formed by dissolving pouches or tissues, it is called

pseudocoelom and animals are pseudocoelomates.

ii). If the body cavity is present and formed by true invagination and lined by

layers, it is called true coelom and animals are coelomates.