Farmer in a particular region were concerned that premature yellowing of leaves of a pulse crop might cause decrease in the yield. Which treatment could be most beneficial to obtain maximum seed yield.
Options […]
Ethylene is a
Options
(a) Gaseous hormone (b) Gaseous enzyme (c) Liquid-gas mixture (d) Solid hormone
Correct Answer:
Gaseous hormone
Explanation:
Ethylene is gaseous hormone which stimulates transverse or isodiamteric growth but retards […]
Dormancy of seed is broken by
Options
(a) Auxin and Cytokinin (b) Gibberellins and ethylene (c) Ethylene and auxin (d) Cytokinin and auxin
Correct Answer:
Gibberellins and ethylene
Explanation:
Aleurone layered α-amylase promotes […]
Deeply sown seeds do not germinate and do not come up over due to the deficiency of
Options
(a) Light (b) Water (c) Oxygen (d) Nutrients
Correct Answer:
Oxygen
Explanation:
Most plants require […]
Cytokinin was first synthesized by
Options
(a) Skoog and Miller (b) Letham (c) Bensan and Calvin (d) Thimman and went
Correct Answer:
Letham
Explanation:
Letham first synthesized cytokinin from corn milk.
Cytokinin is a hormone whose main function is
Options
(a) Induction of cell division and delay in senescence (b) To take part in cell division (c) Refers to cell movements (d) To cause […]
Coconut fruit is a
Options
(a) Capsule (b) Drupe (c) Berry (d) Nut
Correct Answer:
Drupe
Explanation:
Coconut fruit is a drupe. A drupe develops from a monocarpellary superior ovary and is one […]
Classical experiments on growth were performed by
Options
(a) Lamarck and Boysen-Jennsen (b) Boysen-Jennsen and Darwin (c) Darwin and Lamarck (d) De Vries and Paul
Correct Answer:
Boysen-Jennsen and Darwin
Explanation:
The existence […]
Cell elongation in internodal region takes place due to
Options
(a) Gibberellins (b) Ethylene (c) Cytokinins (d) Indole acetic acid
Correct Answer:
Gibberellins
Explanation:
The gibberellins induce elongation of the internodes. The elongation […]
Auxin originates at the tip of the stem and controls growth elsewhere. The movement of auxin is largely
Options
(a) Basipetal (b) Acropetal (c) Acropetal and basipetal (d) Centropetal
Correct Answer:
Basipetal
Explanation: […]
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