CSS :: Variations and Mutations
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1. |
Organic variations occur ultimately through: |
A. |
Sexual reproduction |
B. |
Sexual selection |
C. |
Natural selection |
D. |
Mutation |
Answer: Option D
Explanation:
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2. |
Variations are: |
A. |
All the dissimilarities of environmental conditions |
B. |
All the dissimilarities |
C. |
All the dissimilarities between environmental conditions and animals |
D. |
None of these |
Answer: Option B
Explanation:
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3. |
Somatogenic variations are dissimilarities which: |
A. |
Confine to 'soma' only and are heritable |
B. |
Confine to 'germ' and are inheritable |
C. |
Confine to 'soma' only and are inheritable |
D. |
Confine both to 'soma' and 'germ' and are often heritable and often non-heritable |
Answer: Option C
Explanation:
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4. |
All somatogenic variations are: |
A. |
Heritable |
B. |
Often non-heritable |
C. |
Always non-heritable |
D. |
Partially heritable |
Answer: Option C
Explanation:
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5. |
Which of the following are somatogenic variations: |
A. |
Wrestler's muscles |
B. |
Small feet of Chinese women |
C. |
Circumcised penis of Muslims |
D. |
All of these |
Answer: Option D
Explanation:
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6. |
Which of the following is not an example of somatogenic variation: |
A. |
Pierced nose and ear of subcontinental women |
B. |
Well developed muscular right arm of blacksmith |
C. |
Dancing talent in parents |
D. |
Birth of monstrous babies in progenies of people of Hiroshima and Nagaski |
Answer: Option D
Explanation:
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7. |
Hereditary variations can be produced in plants by using: |
A. |
Auxins |
B. |
X-ray |
C. |
Gibberellic Acid |
D. |
DDT |
Answer: Option C
Explanation:
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8. |
Discontinuous variations are: |
A. |
Mutations |
B. |
Acquired characters |
C. |
Essential features |
D. |
Non-essential features |
Answer: Option A
Explanation:
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9. |
There would have been no organic evolution if: |
A. |
The individuals did not transmit acquired characters to their offsprings |
B. |
Individuals in a population did not show gene variation |
C. |
Somatic variations did not get inherited |
D. |
Somatic variations did not get transformed into genetic variations |
Answer: Option B
Explanation:
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10. |
In absence of of organic evolution there world have been: |
A. |
No specification |
B. |
Only one species on the earth |
C. |
Absence of variations |
D. |
All of these |
Answer: Option D
Explanation:
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