Biology 2nd Year
MCQs
Chapter No.2
Support and Movement
31. Some protozoans have a shell around their body is example of
- exoskeleton
- Endoskeleton
- Hydraulic skeleton
- Calcified
Answer:
exoskeleton
32. How many parts of endoskeleton consists of parts
- One
- Two
- Three
- Four
Answer:
Two
33. In earthworm, which muscles produce elongation of body and shortening respectively?
- Longitudinal
- Circular muscles
- Circular and Longitudinal
- None of these
Answer:
Circular and Longitudinal
34. Animals that lack a hard skeleton, a fluid filled gastro vascular Cavity or coelom can act as
- Exoskeleton
- Endoskeleton
- Hydrostatic skeleton
- All of these
Answer:
Hydrostatic skeleton
35. A hardened outer surface to which internal muscles can be attached is
- Exoskeleton
- Endoskeleton
- Hydrostatic skeleton
- None of these
Answer:
Exoskeleton
36. The part of exoskeleton composed of chitin, tough, leathery polysaccharide and several kinds of proteins is
- Epicuticle
- Procuticle
- Cuticle
- Ectoderm
Answer:
Procuticle
37. The process of shedding exoskeleton periodically and its replacement with one of the larger size in arthropods is called
- Ecdysis
- Metamorphosis
- Bolting
- All these
Answer:
Ecdysis
38. The changes that occur (During ecdysis in an arthropods are controlled BY
- Nervous system
- A hormone ecdysone
- Chemical coordination
- Nervous system & A hormone ecdysone
Answer:
Nervous system & A hormone ecdysone
39. Which of the following cells are associated with bones?
- Osteoblasts
- Osteocytes
- Osteoclasts
- ALL
Answer:
ALL
40. The living cells of cartilage are called
- Chondrocytes
- Osteoblasts
- Osteocytes
- Osteoclasts
Answer:
Chondrocytes
