Chapter 19 - Growth and Development - 3

Chapter 19 - Growth and Development - 3

1. The scientist who worked on Acctabularia is:

a) Haemmerling
b) Spemann
c) Thimann
d) Hans Dietrisch

2. In 18 hours chich embryo, it is the most prominent structure:

a) Hensen’s node
b) Primitive streak
c) Neurocoel
d) Notochord

3. Sperm observed that from a _______ celled embryo, if a single cell is separated, it contains a complete set of genes and forms a complete embryo:

a) 16
b) 8
c) 20
d) 12

4. When a piece of ectoderm was removed from Frog’s embryo, it was unable to form normal:

a) Circulatory system
b) Reproductive system
c) Digestive system
d) Nervous system

5. The human life span is judged to be maximum of:

a) 150 years
b) 60 years
c) 120-125 years
d) 90 years

6. In microcephaly, the individuals are born with small:

a) Humerus
b) Radius
c) Ulna
d) Skull

7. The negative physiological changes in our body are called:

a) Regeneration
b) Degeneration
c) Growth
d) Abnormalities

8. This is the condition in which one of the sex chromosome is missing:

a) Mutation
b) Turner’s syndrome
c) Klinefelter’s syndrome
d) Trisomy

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