CBSE Class 10 - Biology - Heredity and Evolution (MCQs)

Heredity and Evolution

(MCQs)

Q1: Which type of variation is inherited?

(a) Somatic Variation
(b) Germinal Variation
(c) Both Somatic and Germinal
(d) None of these


Q2: The organs which perform different functions but have the same basic structure are called:

(a) Vestigial organ
(b) Analogous organs
(c) Homologous organs
(d) Analytic organs




Q3: While digging fossils are found at deeper layers of the earth, we can conclude

(a) fossil is the most recent.
(b) fossil is very old may be more than thousand years.
(c) fossil may be recent or old, its position is irrelevant.
(d) fossil age cannot be computed.


Q4: Wings of an insect & a bird are example of

(a) Analogous organs
(b) Vestigial organs
(c) Homologous organs
(d) Analytic organs


Q5: Vermiform appendix is an example of

(a) Analogous organ
(b) Vestigial organ
(c) Homologous organ
(d) Analytic organ


Q6: A trait in an offspring is influenced by

(a) DNA of mother gamete
(b) DNA of father gamete
(c) both DNAs of father and mother gamete
(d) neither of mother of father gamete DNA


Q7: On crossing Tall plant with Dwarf plant Mendel found the the ratio of dwarf plants in F2 generation was?

(a) 25 %
(b) 40 %
(c) 60 %
(d) 75 %


Q8: Gamete cells are 

(a) Diploid
(b) Haploid
(c) Either Diploid or Haploid
(d) None of these


Q9: Human baby will be a female its 23rd chromosome pair is

(a) XX
(b) XY
(c) YY
(d) XYY


Q10: Who proposed the hypothesis that life must have developed from the simple inorganic molecules which were present on earth soon after it was formed?

(a) Miller
(b) Urey
(c) Darwin
(d) Haldane


Q11(TN Board): Mendel observed 7 pairs of contrasting characters in Pisum sativum. One of the following is not a part of that. Find out.
(a) Tall and dwarf,
(b) Yellow and green seed colour,
(c) Terminal and axial Flower,
(d) Smooth and rough stem

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Answers:
1: (b) Germinal Variation
2: (c) Homologous organs
3: (b) fossil is very old may be more than thousand years.
4: (a) Analogous organs
5: (b) Vestigial organ
6: (c) both DNAs of father and mother gamete
7: (a) 25 %
8: (b) Haploid
9: (a) XX
10: (d) Haldane
11: (d) Smooth and rough stem