SMATEE TEST SERIES 6 BIOLOGY
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1. The number of sperms produced by secondary spermatocyte is
a) 0
b) 1
c) 2
d) 4
Deselect Answer
a)
b)
c)
d)
None
2. The placenta of females developed from
a) Inner cell mass
b) Trophoblast
c) Amniotic cavity
d) Zono pellucida
Deselect Answer
a)
b)
c)
d)
None
3. The developing spermatozoa receives majority of its nutrition from
a) Sertoli cells
b) Leydig cells
c) Interstitial cells
d) Granulosa cells
Deselect Answer
a)
b)
c)
d)
None
4. Which of the following hormones is not secreted by placenta
a) Hcg
b) hPL
c) Relaxin
d) GH
Deselect Answer
a)
b)
c)
d)
None
5. Who proposed Chromosomal theory of inheritance?
a) Sutton and Boveri
b) Flemming and Boveri
c) Morgan
d) Sturtevant
Deselect Answer
a)
b)
c)
d)
None
6. What is the phenotypic and genotypic ration for Mendel’s monohybrid cross?
a) 1:2:1 and 1:1
b) 1:1 and 1:2:1
c) 3:1 and 1:2:1
d) 9:3:3:1 and 1:2:2:4:1:2:1:2:1
Deselect Answer
a)
b)
c)
d)
None
7. Red color is completely dominant over white color. If a homozygous red flowered plant is crossed with a homozygous white flowered plant. What will be the characteristic of offspring?
a) All red colored
b) All white colored
c) Half red colored
d) Half white colored
Deselect Answer
a)
b)
c)
d)
None
8. How many contrasting characters of pea plant were studied by Mendel?
a) 4
b) 5
c) 6
d) 7
Deselect Answer
a)
b)
c)
d)
None
9. An example of co-dominance is
a) Eye colour in Drosophila
b) Roan coat in cattle
c) Haemophilia in man
d) Pink flower in Snapdragon
Deselect Answer
a)
b)
c)
d)
None
10. Select the incorrect pair:
a) Yellow pod- Dominant
b) Yellow seed- Dominant
c) White flower- Recessive
d) Terminal position- Recessive
Deselect Answer
a)
b)
c)
d)
None
11. Dorsolateral folds or thickening on back of skin is known as
a) Nictitating membrane
b) Vocal sacs
c) Dermal plicae
d) Copulatory organ
Deselect Answer
a)
b)
c)
d)
None
12. During hibernation, respiration occurs through
a) Lungs
b) Skin
c) Buccopharyngeal
d) None of above
Deselect Answer
a)
b)
c)
d)
None
13. Heart chamber in frog:
a) Two atria and one ventricle
b) Two atria and two ventricles
c) One atrium and two ventricles
d) One atrium and one ventricle
Deselect Answer
a)
b)
c)
d)
None
14. Number of cranial nerves in frog
a) 7 pairs
b) 8 pairs
c) 9 pairs
d) 10 pairs
Deselect Answer
a)
b)
c)
d)
None
15. Fertilization in frog is
a) Internal
b) External
c) Both A and B
d) Neither A nor B
Deselect Answer
a)
b)
c)
d)
None
16. Which of the following is used to find out unknown genotype of a character?
a) Back cross
b) Hybrid cross
c) Test cross
d) All of above
Deselect Answer
a)
b)
c)
d)
None
17. Frogs display which of the following to avoid predators’
a) Mimicry
b) Blending
c) Immobility
d) Hiding
Deselect Answer
a)
b)
c)
d)
None
18. Fern prothallus develops from
a) oospore
b) antherozoid
c) elater
d) spore.
Deselect Answer
a)
b)
c)
d)
None
19. Sporangia bearing leaves in pteridophytes are called
a) protonema
b) strobili
c) sporophylls
d) none of these.
Deselect Answer
a)
b)
c)
d)
None
20. The tallest tree is
a) Pinus
b) Cycas
c) Sequoia sempervirens
d) Zamia pygmaea.
Deselect Answer
a)
b)
c)
d)
None
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