E-PolyLearning

1. Inner semi fluid of invertebral disc is
a. nucleus pulposus
b. annulus fibrosus
c. ileum fibrosus
d. cytoplasmic polposus
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Answer: (a).nucleus pulposus

2. Freezing temperatures form ice crystals within protoplasm, perforates membranes and organelles, eventually cell is
a. regenerated
b. killed
c. phagocytosed
d. plasmolysed
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Answer: (b).killed

3. Tubular system opens to exterior through several
a. nephridiophore
b. nephrostome
c. protonephridium
d. protophrostome
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Answer: (a).nephridiophore

4. There is a thick layer of insulating fat in whales and seals which protects them from colder water, this layer is known as
a. brown fat
b. cuticle
c. blubber
d. integument
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Answer: (c).blubber

5. Joints which are held together by fibers of connective tissue are called
a. fibrous joints
b. synovial joints
c. hinge joints
d. ball and socket joints
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Answer: (a).fibrous joints

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