The muscle fatigue occurs due to accumulation of
Options
(a) Pyruvic acid (b) ATP (c) Lactic acid (d) Eroman CO₂
Correct Answer:
Lactic acid
Explanation:
During muscle fatigue due to deposition of lactic […]
The movement of cilia and flagella is due to the presence of
Options
(a) radial spokes (b) central sheath (c) singlet microtubules (d) dyneins
Correct Answer:
dyneins
Explanation:
No explanation available. Be the […]
The most widely accepted theory of ascent of sap is
Options
(a) capillarity (b) pulsatory movement of living tissue (c) role of atmospheric pressure (d) transpiration pull and cohesion
Correct Answer:
transpiration pull […]
The most abundant naturally occurring plant hormone is
Options
(a) indole-3 acetic acid (b) ABA (c) cytokinin (d) IBA
Correct Answer:
indole-3 acetic acid
Explanation:
IAA brings about cell wall extension by activating […]
The membrane surrounding the vacuole is known as
Options
(a) cell membrane (b) plasmelemma (c) tonoplast (d) chromoplast
Correct Answer:
tonoplast
Explanation:
No explanation available. Be the first to write the explanation for […]
The matrix of bone and cartilage can be distinguished by the presence of
Options
(a) Harversian canal (b) lacuna (c) chromatophores (d) adipose cells
Correct Answer:
Harversian canal
Explanation:
The Haversian canal is […]
The main nitrogenous waste of Hydra is
Options
(a) Ammonia only (b) Urea only (c) Uric acid only (d) Both (a)Ammonia only and (c)Uric acid only
Correct Answer:
Ammonia only
Explanation:
The main […]
The magnitude of root pressure ranges between
Options
(a) 1-5 atm (b) 2-5 atm (c) 0.1-0.5 atm (d) 2-10 atm
Correct Answer:
1-5 atm
Explanation:
Root pressure, a manifestation of active water absorption, […]
The lowest water potential is found in
Options
(a) leaves (b) xylem (c) root hair (d) phloem
Correct Answer:
phloem
Explanation:
The lowest water potential is found in phloem because phloem transports solutes […]
The low temperature treatment that shortens the period between sowing and the flowering is called
Options
(a) chemotaxy (b) freezing injury (c) vernalization (d) devermalization
Correct Answer:
vernalization
Explanation:
Photoperiodism is the response […]
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