Incomplete Double Circulation

Q.

Which of the following organisms have double circulation?

1. All of these

2. Crocodiles

3. Birds

4. Human

Q.

Incomplete double circulation is observed in:

1. Reptiles

2. Birds

3. Amphibians

4. Both 1 and 3

Q. Which of the following is having a single ventricle?

1. Crocodile
2. Frog
3. Whale
4. Parrot

Q.

The number of chambers in the heart of a frog is

1. One

2. Two

3. Three

4. Four

Q. Animals devoid of respiratory, excretory and circulatory organs belong to phylum

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

Q. Incomplete double circulation is observed in

1. Reptiles
2. Birds
3. Amphibians
4. Both a and c