KPSC/KAS/PSI/FDA Exam Biology MCQs Part-3

101. The food material prepared in the plants is transported to the various organs by which of the following?

(a) Xylem

(b) Phloem

(d) Cambium

102. The suitable conditions in which the rate of evaporation occurs more fastly are

(a) Low speed of wind

(b) High humidity

(d) Excess amount of water in the soil

103. Process by which plants prepare their food is

(a) Carbohydrolysis

(b) Metabolic synthesis

(d) Photorespiration

104. In photosynthesis

(a) Light energy is converted into chemical energy

(b) Chemical energy is converted into light energy

(d) Light energy is converted into mechanical energy

105. Which of the following organelles of a cell is involved in photosynthesis?

(a) Chloroplast

(b) Mitochondria

(d) Endoplasmic reticulum

106. The ultimate cause of water movement in a plant stem against gravity is

(a) Osmosis

(b) Photosynthesis

(d) Diffusion

107. A seed is ripened:

(a) Ovary

(b) Flower

(d) Ovule

108. Which of the following plants produce only seeds but no fruit?

(a) Sugarcane

(b) Peanut

(d) Almond

109. Photosynthesis using the invisible part of the sunlight is done by

(a) Trees

(b) Algae

(d) Bacteria

110. Which one of the following is not an essential micronutrient for plants?

(a) Boron

(b) Zinc

(d) Copper

111. Which of the following plant hormone is mainly responsible for fruit ripening?

(a) Cytokine

(b) Abscisic acid

(d) None of these

112. Pollination by snail is called

(a) Zoophily

(b) Entomophily

(d) Malacophily

113. The natural dye present in turmeric is known as

(a) Cinnamon

(b) Phenolphthalein

(d) Curcumin

114. The main function of the inner bark of a woody plant is to

(a) transport minerals and water from the roots to the leaves

(b) act as a membrane impermeable to water and gas

(d) protect the plant from herbivorous animals

115. Which one of the following is modification of parenchyma?

(a) Fibres found in phloem

(b) Tracheids

(d) Chlorenchyma

116. Which of the following are absent in gymnosperms?

(a) Xylem vessels

(b) Xylem fibres

(d) All of these

117. Consider the following statements:

1. Annual rings are distinct in plants which grow in temperate region.

2. One growing ring of plant consists of only spring wood.

Which of the statements given above is/are correct about annual ring?

(a) 1 only

(b) 2 only

(d) Neither 1 nor 2

118. Match List-I with List-II and select the correct answer by using the codes given below:

List-I	List-II
Dark reaction	Grana of chloroplast
Light reaction	Stroma of chloroplast
Glycolysis	Cytoplasm
Krebs’s cycle	Mitochondrial matrix

A B C D

(a) 2 1 3 4

(b) 3 4 2 1

(d) 4 2 1 3

119. Consider the following statements:

1. Food prepared by plant is transported to different parts of plant through phloem.

2. Water and minerals in plant is transported through phloem.

3. The cell wall of phloem cells is rich in lignin.

Which of the statements given above is/are correct?

(a) 1 only

(b) 2 and 3

(d)1, 2 and 3

120.Match the following:

List-I	List-II
Chili pepper	Capsaicin
Coriander	Allicin
Garlic	Lycopene
Tomato	Geraniol

A B C D

(a) 1 4 2 3

(b) 3 1 2 4

(d) 2 1 3 4

121.Consider the following statements:

1. Carbon dioxide, chlorophyll and sunlight all are essential for photosynthesis.

2. Rate of photosynthesis is minimum in red light and maximum in green light.

3. Increase in O2 concentration decreases photosynthesis.

Which of the statements given above are correct about photosynthesis?

(a) 1 and 2

(b) 2 and 3

(d)1, 2 and 3

122.Consider the following statements and choose the correct ones.

1. Anthesis is a phenomenon of ripening of fruits.

2. Fruits developed without fertilization are parthenocarpic.

3. Plants undergo single fertilization event.

(a) 1 and 2 only

(b) 1 only

(d) All are correct

123.Consider the following statements:

1. Photolysis of water involves breakdown of oxygen by light.

2. The specific function of light energy in the process of photosynthesis is to activate chlorophyll.

3. By-product of photosynthesis is carbon dioxide.

Which of the statements given above is/are correct?

(a) 1 only

(b) 2 only

(d) 1, 2 and 3

124. Vaseline was applied to both surfaces of the leaves of a plant. Which of the following process/processes would be affected?

1. Photosynthesis

2. Respiration

3. Transpiration

Select the correct answer using the codes given below:

(a) 1 and 3 only

(b) 2 only

(d)1, 2 and 3

125. Which of the following is a correct statement about nitrogen fixation?

(a) Plants convert atmospheric nitrogen to ammonia.

(b) Ammonia is converted to N2, which is the form of nitrogen most easily absorbed by plants.

(d) The enzyme Nitrogenase reduces N2 to form ammonia.

126. Consider the following facts about plants.

1. Carbon dioxide and water vapour in plants are produced as wastes during respiration.

2. Oxygen is produced as a waste during photosynthesis.

3. The gaseous wastes of respiration and photosynthesis in plants are removed through the xylem vessels.

The correct answer is:

(a) 1 and 2

(b) 2and 3

(d) 1, 2 and 3

127.Consider the following statements:

1. Androecium and gynoecium are reproductive organs of flower.

2. Calyx and corolla are accessory female reproductive organs of a flower.

Which of the statements given above is/are correct?

(a) 1 only

(b) 2 only

(d) Neither 1 nor 2

128. Consider the following statements:

1.In algae, the reproductive organs are single-celled.

2.Fern plants lack true vascular system.

Which of the statements given above is/are correct?

(a) Only 1

(b) Only 2

(d) Neither 1 nor 2

129. Which of the following statements about sexual reproduction in flowering plants are correct?

1. Stamen is present in the centre of a flower.

2. Stamen produces pollen grains in the ovary.

3. The swollen bottom part of carpel is the ovary.

4. The fusion of germ cells gives rise to zygote.

Select the correct answer using the code given below.

(a) 2, 3 and 4 only

(b) 2 and 4 only

(d) 1, 2, 3 and 4 only

130. Vivipary in plants means

(a) germination of seeds in the crevices of stem where some soil is deposited

(b) development of pea nut fruits after the fertilization

(d) germination of seeds inside the fruit while it is still on the plant parent tree

131. Choose the forms in which most plants absorb nitrogen

(i) Proteins

(ii) Nitrates and Nitrites

(iii) Urea

(iv) Atmospheric nitrogen

Codes

(a) (i) and (ii)

(b) (ii) and (iii)

(b) (iii) and (iv)

(d) (i) and (iv)

132. Which of the following statement(s) is (are) correct?

(i) Pyruvate can be converted into ethanol and carbon dioxide by yeast

(ii) Fermentation takes place in aerobic bacteria

(iii) Fermentation takes place in mitochondria

(iv) Fermentation is a form of anaerobic respiration

Codes

(a) (i) and (iii)

(b) (ii) and (iv)

(d) (ii) and (iii)

133.Offspring formed by asexual method of reproduction have greater similarity among themselves because

(i) asexual reproduction involves only one parent

(ii) asexual reproduction does not involve gametes

(iii) asexual reproduction occurs before sexual reproduction

(iv) asexual reproduction occurs after sexual reproduction

Codes

(a) (i) and (ii)

(b) (i) and (iii)

(d) (iii) and (iv)

134. Factors responsible for the rapid spread of bread mould on slices of bread are

(i) large number of spores

(ii) availability of moisture and nutrients in bread

(iii) presence of tubular branched hyphae

(iv) formation of round shaped sporangia

Codes

(a) (i) and (iii)

(b) (ii) and (iv)

(d) (iii) and (iv)

135. Which one of the following gases is essential for photosynthesis process? [UP-PCS 2011] (a) CO

(b) CO2

(d) O2

136. Chlorophyll contains [UP-PCS 2012]

(a) Iron

(b) Copper

(d) Manganese

137. Photosynthesis using the invisible part of the sunlight is done by some [UP-PCS 2013]

(a) Trees

(b) Algae

(d) Fungi

138. Which of the following accounts for red colour of tomato? [UP-PCS 2016]

(a) Capsaicin

(b) Carotene

(d) Lycopene

139.Consider the following statements: [UP-RO 2016]

Assertion (A) : Cuscuta (Amarbel) is an example of parasitic angiosperm.

Reason (R) : It gets its nutrition from the host plant.

Choose your answer from the codes give below –

(a) Both (A) and (R) are true and (R) is the correct explanation of (A)

(b) Both (A) and (R) are true but (R) is not the correct explanation of (A)

(d) (A) is rue, but (R) is false Animal/ Human Anatomy/ Physiology

140. The enzymes are killed

(a) at a very high temperature

(b) during chemical reaction

(d) under atmospheric pressure

141. Which has maximum calorific value?

(a) Fat

(b) Protein

(d) Amino acid

142. pH of human body varies within the range of

(a) 6.0 to 6.5

(b) 5.5 to 5.8

(d) 7.0 to 11.0

143. Which of the following hormones contains Iodine ?

(a) Thyroxine

(b) Testosterone

(d) Adrenaline

144. Arteries supplying blood to the heart are called

(a) Carotid arteries

(b) Hepatic arteries

(d) Pulmonary arteries

145. The hormone insulin is a

(a) glycolipid

(b) fatty acid

(d) sterol

146. In which organ of the human body are the lymphocytes formed?

(a) Liver

(b) Bone marrow

(d) Spleen

147. In human body, which one of the following hormones regulates blood calcium and phosphate?

(a) Glucagon

(b) Growth hormone

(d) Thyroxine

148. In the human beings, normally in which one of the following parts, does the sperm fertilize the ovum?

(a) Cervix

(b) Fallopian tube

(d) Upper part of uterus

149. Which one of the following parts of human brain is the regulating centre for swallowing and vomiting?

(a) Cerebellum

(b) Cerebrum

(d) Cortex

150. Production of which one of the following is associated with the function of the liver?

(a) Lipase

(b) Urea

(d) Hydrochloric acid

KPSC/KAS/PSI/FDA Exam Biology MCQs Part-3

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