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Science M.C.Q

Heredity and Evolution · Jharkhand Board (JAC) STD 10 (Jharkhand - English Medium). 54 questions.

Questions · Page 2 of 2

M.C.Q

MCQ 511 Mark
The presence of which of the following types of organs in two organisms indicates that they are derived from the same ancestor?
  • A
    Analogous organs.
  • B
    Respiratory organs.
  • C
    Digestive organs.
  • ✓
    Homologous organs.
Answer
Correct option: D.
Homologous organs.
The presence of homologous organs indicates that the two organisms are derived from the same ancestor.
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MCQ 521 Mark
A cross between two individuals results in a ratio of 9 : 3 : 3 : 1 for four possible phenotypes of progeny. This is an example of a:
  • ✓
    Dihybrid cross.
  • B
    Monohybrid cross.
  • C
    Test cross.
  • D
    None of these.
Answer
Correct option: A.
Dihybrid cross.
A dihybrid cross gives progeny in the ratio of 9 : 3 : 3 : 1.
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MCQ 531 Mark
A zygote which has inherited an X chromosome from the father will develop into:
  • A
    Baby boy.
  • ✓
    Baby girl.
  • C
    Adult.
  • D
    Either boy or girl.
Answer
Correct option: B.
Baby girl.
A zygote which has inherited an X chromosome from the father will develop into a baby girl. The combination XX of sex chromosomes tends to develop into females.
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MCQ 541 Mark
Select the group which shares the maximum number of common characters:
  • ✓
    Two individuals of a species.
  • B
    Two species of a genus.
  • C
    Two genera of a family.
  • D
    Two genera of two families.
Answer
Correct option: A.
Two individuals of a species.

Two individuals of a species share the maximum number of common characters.

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M.C.Q - Page 2 - Science STD 10 Questions - Vidyadip