SMATEE TEST SERIES 5 BIOLOGY

1. In which part of the plant cell does photosynthesis primarily occur?

a) Mitochondria              
b) Nucleus
c) Chloroplast
d) Ribosome

2. What are the two main products of photosynthesis?

a) Oxygen and glucose
b) Carbon dioxide and water
c) ATP and NADPH
d) Starch and cellulose

3. Which gas is taken in by plants during photosynthesis?

a) Oxygen’
b) Carbon dioxide
c) Nitrogen
d) Hydrogen

4. Which of the following is NOT required for photosynthesis?

a) Sunlight
b) Water
c) Oxygen
d) Carbon dioxide

5. What is the role of water in photosynthesis?

a) It provides oxygen for the plant.
b) It is split to release electrons and protons.
c) It is the final product of photosynthesis.
d) It absorbs sunlight.

6. Which of the following is a byproduct of photosynthesis?

a) Carbon dioxide
b) Oxygen
c) Glucose
d) Water

7. The Calvin cycle is termed “light-independent,” but it cannot occur in prolonged darkness. Why?

a) It requires CO₂ only available during the day.
b) It depends on ATP and NADPH from light reactions.
c) RuBisCO functions only in the presence of light.
d) Stomata close at night, blocking CO₂ entry.

8. What is the primary pigment responsible for capturing light energy in plants?

a) Chlorophyll
b) Carotenoid
c) Xanthophyll
d) Phycobilin

9. Whatis the primary enzyme used in the C4 cycle for carbon fixation?

a) Rubisco
b) PEP Carboxylase
c) Pyruvate Kinase
d) ATPase

10. In the C3 cycle, how many carbon atoms does the initial compound (RuBP) have?

a) 3
b) 4
c) 5
d) 6

11. How many carbon atoms does the first stable compound in the C4 cycle have?

a) 3
b) 4
c) 5
d) 6

12. Which of the following processes directly requires ATP and NADPH?

a) Photolysis of water
b) Electron transport chain
c) Fixation of carbon dioxide in the Calvin cycle
d) Absorption of light by chlorophyll

13. Epididymis lies between

a) Vasa efferentia and rete testis
b) Vasa efferentia and vas deferens
c) Vas deferens and ejaculatory duct
d) Seminiferous tubules and rete testis

14. Which of the following cells in the male gonad represent haploid cells?

a) Spermatogonial cells
b) Germinal epithelial cells
c) Secondary spermatocytes
d) Primary spermatocytes

15. Release of seminal fluid in the vagina of female is

a) Ejaculation
b) Implantation
c) Insemination
d) Copulation

16. Stage of embryo development at which implantation occurs in human female is

a) Morula
b) Zygote
c) Blastocyst
d) Neurula

17. The nebenkern of sperm is located in

a) Head portion
b) Principal piece of tail
c) End piece
d) Middle piece

18. Withdrawal of which hormone is the cause of menstruation?

a) Estrogen
b) Progesterone
c) LH
d) FSH

19. Site of fertilization in humans is

a) Ampulla-isthmus junction of oviduct
b) Isthmus-uterine part
c) Infundibulum-ampulla junction of fallopian tube
d) Ovary

20. The stage in woman’s life when ovulation and menstruation stops is

a) Menarche
b) Ovulatory phase
c) Menopause
d) Parturition

71. The number of sperms produced by secondary spermatocyte is

a) 0
b) 1
c) 2
d) 4

72. The placenta of females developed from

a) Inner cell mass
b) Trophoblast
c) Amniotic cavity
d) Zono pellucida

73. The developing spermatozoa receives majority of its nutrition from

a) Sertoli cells
b) Leydig cells
c) Interstitial cells
d) Granulosa cells

74. Which of the following hormones is not secreted by placenta

a) Hcg
b) hPL
c) Relaxin
d) GH

75. Who proposed Chromosomal theory of inheritance?

a) Sutton and Boveri
b) Flemming and Boveri
c) Morgan
d) Sturtevant

76. 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

77. 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

78. How many contrasting characters of pea plant were studied by Mendel?

a) 4
b) 5
c) 6
d) 7

79. 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

80. Select the incorrect pair:

a) Yellow pod- Dominant
b) Yellow seed- Dominant
c) White flower- Recessive
d) Terminal position- Recessive

81. Dorsolateral folds or thickening on back of skin is known as

a) Nictitating membrane
b) Vocal sacs
c) Dermal plicae
d) Copulatory organ

82. During hibernation, respiration occurs through

a) Lungs
b) Skin
c) Buccopharyngeal
d) None of above

83. 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

84. Number of cranial nerves in frog

a) 7 pairs
b) 8 pairs
c) 9 pairs
d) 10 pairs

85. Fertilization in frog is

a) Internal
b) External
c) Both A and B
d) Neither A nor B

86. 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

87. Frogs display which of the following to avoid predators’

a) Mimicry
b) Blending
c) Immobility
d) Hiding

88. Fern prothallus develops from

a) oospore
b) antherozoid
c) elater
d) spore.

89. Sporangia bearing leaves in pteridophytes are called

a) protonema
b) strobili
c) sporophylls
d) none of these.

90. The tallest tree is

a) Pinus
b)  Cycas
c) Sequoia sempervirens
d) Zamia pygmaea.

91. Coralloid roots with symbiotic blue-green alga are found in

a) Pinus
b) Araucaria
c) Cedrus
d) Cycas.

92. Which of the following statements is incorrect about gymnosperms?

a) Eucalyptus is the tallest species of gymnosperms.
b) The needle like leaves of conifers reduce the surface area.
c) Sunken stomata present in gymnosperms help to reduce water loss.
d) The pollen grains are carried by air.

93. Select the option which completes the following table with reference to classes of algae and their main characteristics.


a) (a)-Starch, (b)-Phycoerythrin, (c) Fucoxanthin, (d)-Floridean starch
b) (a)-Floridean starch, (b)-Fucoxanthin, (c) Phycoerythrin, (d)-Starch
c) (a)-Starch, (b)-Fucoxanthin, (c) Phycoerythrin, (d)-Floridean starch
d) (a)-Floridean starch, (b)-Phycoerythrin, (c) Fucoxanthin, (d)-Starch

94. Agar-agar which is extensively used in all microbiological studies and culture media is an important product of sea resources and is obtained from which group of algae?

a) Brown algae
b) Green algae
c) Red algae
d) Diatoms and dinoflagellates

95. Protonema is structure found in bryophytes

a) which is sporophytic in moss
b) which is gametophytic in moss
c) which is sporophytic in liverwort
d) which is gametophytic in liverwort.

96. In gymosperm, the endosperm is formed by

a) fusion of two polar nuclei
b) fertilised egg
c) fusion of one polar nucleus
d) germination of one megaspore.

97. A gymnospermic leaf carries 16 chromosomes. The number of chromosomes in its endosperm will be

a) 24
B. 12
c) 16
d) 8

98. Refer to the given Venn diagram and select the correct option regarding P and Q.

a) P could be an alga or a bryophyte whereas Q could be a pteridophyte.
b) True roots, stems and leaves are present in P but absent in Q.
c) Antheridium in Q is sessile whereas that in P (if present) is stalked.
d) P is exclusively xerophytic whereas Q is amphibious by nature.

99. Floridean starch has structure similar to

a) starch and cellulose
b) amylopectin and glycogen
c) mannitol and algin
d) laminarin and cellulose

100. Select the option that correctly identifies A and B in the given figure.

a) i
b) ii
c) iii
d) iv