Body Cavity

Q.

Give an example of pseudocoelomate organism.

Q. Identify (1), (2) and (3) from the given table.

$\begin{array}{ccc}Phylum& Germlayer& Bodycavity\\ \text{(1) \_\_\_\_\_\_\_\_\_\_}& \text{Triploblastic}& \text{Acoelomates}\\ \text{Aschelminthes}& \text{Triploblastic}& \text{(2) \_\_\_\_\_\_\_\_\_\_}\\ \text{Annelida}& \text{(3) \_\_\_\_\_\_\_\_}& \text{Eucoelomates}\end{array}$

1. (1) Porifera, (2) Acoelomates, (3) Diploblastic
2. (1) Platyhelminthes, (2) Eucoelomates, (3) Triploblastic
3. (1) Platyhelminthes, (2) Pseudocoelomates, (3) Triploblastic
4. (1) Porifera, (2) Pseudocoelomates, (3) Triploblastic

Q.

An exception among chlorophyllous bryophytes is _________.

1. Liverwort

2. Cryptothallus

3. Selaginella

4. Hornwort

Q. Gametophyte is most developed in:

1. Fern
2. Moss
3. Pinus
4. Cycas

Q.

Which of the following phylum has pseudocoelom?

1. Gymnosperms

2. Angiosperms

3. Bryophytes

4. Pteridophytes

Q. why companion cells are absent in gymnosperms and pteridophytes and what is used in place of companion cells in them?

Q. Spongilla

1. Coelomate
2. All of the above
3. Acoelomate
4. Pseudocoelomate

Q. Coelom is the

1. External body cavity between visceral organs and cellular wall
2. Internal body cavity between lateral organs and cellular wall
3. Internal body cavity between visceral organs and body wall
4. Internal body cavity between visceral organs and cellular wall

Q. Pseudocoelomic organism belong to________________________.

1. Annelids
2. Aschelminthes
3. Echinodermata
4. Amphibian