41- The structure given below is the constituent part of:
A. Lipids
B. Carbohydrates
C. Vitamins
D. Proteins
View Answer
Answer : D. Proteins
Description
42- In pressure flow theory, when water moves out of sieve tube cells by osmosis, it lowers the ______.
A. Solute Potential
B. Hydrostatic Pressure
C. Source Concentration
D. Water Potential
View Answer
Answer : B. Hydrostatic Pressure
Description
43- Evaporation of water from the aerial parts of the plants, especially through the stomata of the leave creates a force which is cause of water movement in higher plant is ______.
A. Root pressure
B. Leave pressure
C. Transpiration
D. Transpiration Pull
View Answer
Answer : D. Transpiration Pull
Description
44- Which of the following reduces the rate of transpiration by adaptations in xerophytes?
A. Large surface area of leaves
B. Increase number of stomata
C. Thick waxy cuticle
D. Excessive loss of water
View Answer
Answer : C. Thick waxy cuticle
Description
45- Which of the following types of transpiration account for 5-7% of total transpiration that take place in plants?
A. Cuticular
B. Lenticular
C. Stomatal
D. Leaves
View Answer
Answer : B. Lenticular
Description
46- Vocal cords, which help in voice production are two thin edged fibrous bands, present in:
A. Glottis
B. Bronchi
C. Larynx
D. Trachea
View Answer
Answer : C. Larynx
Description
47- The causing agent of the tuberculosis that grows very well in poor living conditions and malnutrition is:
A. Spirobacterium
B. Mycobacterium
C. Pseudomonas
D. Staphylococcus
View Answer
Answer : B. Mycobacterium
Description
48- The most important cause of many of the respiratory disorders is:
A. Bacterial infection
B. Pollution
C. Smoking
D. Radiations
View Answer
Answer : C. Smoking
Description
49- Hemoglobin can absorb maximum oxygen at sea level, which is ______ ml/100ml of blood.
A. 15
B. 19
C. 19.6
D. 20
View Answer
Answer : C. 19.6
Description
50- Which of the following part of urinary system temporarily stores urine, and releases it when filled?
A. I
B. II
C. III
D. IV
View Answer
Answer : D. IV
Description
51- Which one of the following is hypertonic solution to cells present in it?
A. A
B. B
C. C
D. Both A and B
View Answer
Answer : B. B
Description
52- Humans maintain their body temperature within a narrow limit due to their ______ characteristics.
A. Ectothermic
B. Endothermic
C. Heterothermic
D. Hypothermic
View Answer
Answer : B. Endothermic
Description
53- Human body maintains all of its cell ______ to internal body fluid.
A. Isotonic
B. Hypotonic
C. Hypertonic
D. Hyposmotic
View Answer
Answer : A. Isotonic
Description
54- Which of the following cells recognize antigens and form plasma cell clone?
A. A cell
B. B cells
C. T cells
D. Z cells
View Answer
Answer : B. B cells
Description
55- What stage of mitosis is shown in the given below structure?
A. Prophase
B. Metaphase
C. Interphase
D. Anaphase
View Answer
Answer : D. Anaphase
Description
56- In microtubules, the spindle fibers in mitotic apparatus are made up of:
A. Actin proteins
B. Myosin proteins
C. Tubulin proteins
D. Actin and myosin proteins
View Answer
Answer : C. Tubulin proteins
Description
57- In case of human cell, average exit cycle is completed in about hours.
A. 02
B. 06
C. 12
D. 24
View Answer
Answer : D. 24
Description
58- The binding energy per nucleon of deuteron (²₁H) and helium nucleus (⁴₂He) are 1.1 MeV and 7 MeV respectively. If two deuterons merge to form a single helium nucleus, then energy released will be:
A. 04.8 MeV
B. 13.6 MeV
C. 23.6 MeV
D. 26.2 MeV
View Answer
Answer : C. 23.6 MeV
Description
59- A bullet of mass 20 g leaves the gun with a velocity of 200 m/s. If the mass of gun is 2 kg then the speed of recoil of the gun is:
A. 2 m/s
B. 20 m/s
C. 200 m/s
D. 100 m/s
View Answer
Answer : A. 2 m/s
Description
60- In a coil, when current change from 10A to 4A in 1s, an induced emf of 1.2 V is induced across the coil. The self-inductance of the coil is:
