Body Cavity

Q.

Coelom is lined by

1. Ectoderm

2. Endoderm

3. All of these

4. Mesoderm

Q.

Name the type of animal body cavity each of the following diagrams represents.

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

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

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

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

Q.

Animals in which the body cavity is not lined by mesoderm, and instead, the mesoderm is present as scattered pouches in between the ectoderm and endoderm are:

1. Acoelomates

2. Pseudocoelomates

3. Coelomates

4. Haemocoelomates

Q. Phylum consists of organisms which do not have a coelom.

1. Mollusca
2. Aschelminthes
3. Platyhelminthes
4. Echinodermata

Q. Match them up based on their body cavities.

1. Nematodes
2. Flatworms
3. Molluscs

Q. The body cavity present between the body wall and the gut wall of vertebrates is called .

1. mesoderm
2. coelom
3. ectoderm
4. endoderm

Q. True coelom appeared first in the course of evolution in

1. chordates
2. roundworms
3. starfish
4. leech

Q. Ctenophores and jellyfish resemble each other in being:

1. Diploblastic and acoelomate
2. Triploblastic and acoelomate
3. Triploblastic and pseudocoelomate
4. Diploblastic and coelomate

Q. The body cavity is the cavity present between the body wall and the gut wall. In some animals, the body cavity is not lined by mesoderm. Such animals are called

1. pseudocoelomates
2. coelomates
3. acoelomates
4. none of the above

Q. Diploblastic animals have

1. ectoderm, endoderm and mesoderm
2. ectoderm and mesoderm
3. ectoderm, endoderm and mesoglea in pouches
4. ectoderm, endoderm and mesoglea