Chapter-9 MCQs - AMU/JMI XI-Dip.Engg. Entrance Test

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Science Class X: Chapter-1,Chapter-2,Chapter-3,Chapter-4,Chapter-5,Chapter-6,Chapter-7,Chapter-8,Chapter-9, Chapter-10 Chapter-11 Chapter-12 Chapter-13 Chapter-14    
Chapter 9  : Heredity and Variation Answers

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1. Both father and mother  contribute practically---------------------------- amounts of genetic material to the child
a. Equal
b. Unequal
c. Both a and b
d. None of the above
2. The botanical name of garden pea is 
a. Pisum sativum
b. Lathyratus odoratus
c. Allium cepa
d. Solanum tuberosum
3.   A _____________ is a section of DNA that provides information about the proteins
a. Gene
b. Chromosome
c. Histone
d. Telomere
4. variation is observed in
a. Asexual reproduction
b. Vegetative propagation
c. Budding
d. Sexual reproduction
5. The chromatids are joined to each other by
a. Gene
b. DNA
c. Chromosome
d. Centromere
6. The molecule of nuclear DNA of humans is
a. Linear 
b. Cyclic
c. Helical
d. Hexagonal
7. Adenine is linked to Thymine by _____________ weak hydrogen bonds in DNA
a. 2
b. 3
c. 1
d. 4
8. Gaunine is linked to Cytosine by _____________ weak hydrogen bonds in DNA
a. 2
b. 3
c. 1
d. 4
9. The cells in human male have chromosomes of the type
a. A+Y
b. A+X
c. 2A+XY
d. 2A+XX
10. In a RNA molecule thymine is replaced by 
a. Adenine 
b. Guanine
c. Uracil
d. Cytosine
11. which among of the following changes sex
a. Humans
b. Frog
c. Crocodile
d. Snail
12. Total number of  autosomes in humans are
a. 22 pairs
b. 23 pairs
c. 21 pairs
d. 24 pairs
13. human females are
a. Heterogametic
b. Homogametic
c. Both a and b
d. None of the above
14. human males are
a. Heterogametic
b. Homogametic
c. Both a and b
d. None of the above
15. The cells in human females have chromosomes of the type
a. A+Y
b. A+X
c. 2A+XY
d. 2A+XX
16. The ovum produced by the human female is
a. Diploid
b. Haploid
c. Tetraploid
d. Hexaploid
17. The sperm produced by the human male is
a. Diploid
b. Haploid
c. Tetraploid
d. Hexaploid
18. ____________ gave germplasm theory
a. Lamarck
b. Weiseman
c. Darwin
d. De Vries
19. Mutation theory was described by
a. Lamarck
b. Weiseman
c. Darwin
d. Hugo De Vries
20. The principle of inheritance of acquired characters was given by
a. Lamarck
b. Weiseman
c. Darwin
d. De Vries
21. Fossils of ____________ provide evidence if evolution as the connecting line between birds and reptiles
a. Dinosaurs 
b. Lizards
c. Archaeopteryx 
d. Ostriches
22. The branch of biology related with heredity and variation is called 
a. Genetics
b. Taxonomy
c. Evolution
d. Systematic
23. The unit of expression of genetic information from one generation to another generation
a. DNA
b. RNA
c. Proteins
d. Blood
24. Generally the gametes according to the number of chromosomes are
a. Tetraploid
b. Triploid
c. Haploid
d. Diploid
25. Which theory was given by Darwin
a. Inheritance of acquired characters
b. Germplasm theory
c. Mutation theory
d. Theory of natural selection
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