1.Living organism differ in
a) Shape
b) Form
c) Size and habit
d) All of these
Explanation: All of these
2. Which is not a character of sponges?
a) Multicellular
b) Cells are functionally independent
c) Cellular level of organization
d) Tissue level of organization
Explanation: Tissue level of organization
3. Which phylum shows tissue level of organization?
a) Protozoa
b) Porifera
c) Coelenterate
d) All of these
Explanation: Coelenterate
4. Organ system level of organization is not found in
a) Annelida
b) Arthropod
c) Molluscs
d) Platyhelminthes
Explanation: Organ system level of organization is not found in platyhelminthes.
5. Incomplete digestive tract (blind sac body plan) is found in
a) Annelida
b) Arthropod
c) Molluscs
d) Platyhelminthes
Explanation: Platyhelminthes
6. Closed type of circulatory system is present in
a) Annelida and arthropod
b) Arthropod and mollusc
c) Annelida and cephalopods
d) Mollusc and echinodermates
Explanation: Closed type of circulatory system is present in annelida and cephalopods.
7. In open type of circulatory system
a) Blood flow in sinuses
b) Blood pressure is low and irregular
c) It is found in arthropods and molluscs (except cephalopods)
d) All are true
Explanation: All are true
8. Closed type of circulatory system is found in
a) Annelida
b) Cephalopods
c) Vertebrate
d) All of these
Explanation: All of these
9. What is false about closed circulatory system?
a) Blood pressure is high and regular
b) Amount of blood is limited
c) Blood circulates through arteries, veins and capillaries
d) Blood pressure is low and irregular
Explanation: "Blood pressure is low and irregular". This is false.
10. When the body of an animal can be divided into equal left and right halves by one plane
symmetry. It is known as
a) Bilateral
b) Radial
c) Biradial
d) Asymmetric
Explanation: When the body of an animal can be divided into equal left and right halves by one plane symmetry. It is known as Bilateral.