CBSE Class 10 Biology MCQs - All Chapters PDF
CBSE Class 10 Biology MCQs - All Chapters PDF
CBSE Class 10 Biology MCQs - All Chapters PDF
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MCQ for Class X Science (Biology)/ Dr. A. Saha
2013
Chapter 6
Life Processes
1 In Photosynthetic process, atmospheric carbon di oxide is _______ to carbohydrates b
a) oxidised b) Reduced
c) Neutralised d) Burnt
During cellular respiration one molecule of glucose is first broken down into two b
6 molecules of ________
a) Acetic acid b) Pyruvic acid
c) Lactic acid d) None of the above
7 Rajib was absent in the class because of muscle pain which he claims to be due to excess a
physical exercise he had done yesterday. This pain is due to
a) Formation of lactic acid b) Formation of acetic acid
c) Formation of Pyruvic acid d) Formation of Hydrochloric acid
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10 In human each kidney has large numbers of filtration units called ___ d
a) Neutrons b) Neurons
c) Neptune d) Nephrons
Chapter 7
Control and Coordination
1 Gustatory receptors will detect ______ b
a) light b) Taste
c) Smell d) Touch
3 Involuntary actions including blood pressure, salivation and vomiting are controlled by the c
__________ in the hind-brain.
a) Medals b) Cerebellum
c) Medulla d) Cerebrum
4 A potted plant kept in a room tends to bend towards the direction of light. This movement d
is called
a) Photographism b) Photonastism
c) Photoperiodism d) Phototropism
6 The endocrine organ present in human female but not in human male is b
a) Testis b) Ovary
c) Pituitary gland d) Thymus
8 People living in coastal areas suffer less from goiter. This is because a
a) They eat sea food b) They drink sea water
c) They bathe in sea water d) All of the above
9 The upward or down ward movement of shoot and root respectively is influenced by c
gravity. Such movement is called
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Chapter 8
How do Organisms Reproduce
1 An animal which can reproduce by budding is c
a) Bryophyllym b) Yeast
c) Hydra d) All of the above
8 An unisexual flower c
a) Do not have carpel b) Do not have stamen
c) Has either carpel or stamen d) Has either petal or sepal
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Chapter 9
Heredity and Evolution
1 The F2 phenotype ratio of a monohybrid cross studied by Mendel is c
a) 1:1 b) 2:1
c) 3:1 d) 4:1
2 If T is for tallness and t for dwarfness, what shall be the genotype of a tall pea plant c
according to Mendelism?
a) TT b) Tt
c) Either TT or Tt d) tt
3 A Yellow and Round seeded pea plant has genotype YyRr. The gametes produced shall be b
a) Yy, Rr b) YR, yR, Yr, yr
c) YR, yr d) Y, y, R, r
4 If in human a sperm (22+Y) fertilizes an egg (22+X), the sex of the foetus shall be a
a) Male b) Female
c) Either male or Female d)
5 Forelimb of frog, lizard, bird and man has some evolutionary relationship. This are d
a) Hand relationship b) Missing links
c) Analogous organs d) Homologous organs
9 Surgically removing tails of mice over several generations’ do not yield mice without tails. d
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10 A random change in the frequency of alleles in any population over several generations b
due to errors in the gametes is called
a) Gene flow b) Genetic Drift
c) Genetic error d) Genetic crash
Chapter 15
Our Environment
1 Only ____ % of the energy can be transferred from one trophic level to the next trophic c
level.
a) 1 b) 5
c) 10 d) 20
4 Replacing Plastic cups by paper cups for selling tea on train may be preferred because
a) Paper cups are bio degradable b) a
c) d)
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a) Grass ----- frog ---- insect ----- snake b) Grass---- insect ----- frog ------ snake
c) Insect --- frog ---- grass ---- snake d) Grass --- frog ---- snake ----- insect
9 Food web is c
a) Food served through websites b) Display of different food items
c) Interlinked food chains d) Using food items for a fashion dress
Chapter 16
Management of Natural Resources
1 The three Rs to save the environment are c
a) Remember, Reduce, Reuse b) Recall, Reduce, Refund
c) Reduce, Recycle, Reuse d) Reduce, Refund, Reuse
5 Amrita Bishnoi lost her life while saving forest having ____ trees b
a) teak b) khejri
c) bamboo d) segun
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