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 […]
Which plants exhibits Kranz anatomy?
Options
(a) C₅ plants (b) C₃ plants (c) C₂ plants (d) C₄ plants
Correct Answer:
C₄ plants
Explanation:
Kranz anatomy is the characteristic of C₄ plants. The vertical […]
The plant hormone controlling fruit ripening is
Options
(a) ethylene (b) kinetin (c) I.A.A. (d) GA
Correct Answer:
ethylene
Explanation:
Ethylene (gaseous hormone) aids in ripening of climacteric fruits and dehiscence of dry […]
The organelles involved with photorespiration are
Options
(a) peroxisomes (b) ribosome (c) nucleus (d) plastids
Correct Answer:
peroxisomes
Explanation:
Photorespiration is the process of the oxidation of glycolate. It is produced during glycolate […]
Ballon like outergrowth of parenchyma, into the lumen of vessels is known as
Options
(a) tunica (b) tyloses (c) phellogen (d) histogen
Correct Answer:
tyloses
Explanation:
No explanation available. Be the first to write […]
Heat of formation of H₂O(g) at 25⁰C is -243 kJ,ΔE for the reaction H₂(g) + 1/2 O₂(g) → H₂O(g) at 25⁰C is
Options
(a) -243 kJ (b) -241.8 kJ (c) 241.8 kJ (d) 243 […]
For an endothermic reaction the value of ΔS is positive.The reaction is
Options
(a) feasible when ΔH > TΔS (b) feasible when TΔS > ΔH (c) feasible at all temperatures (d) not feasible at […]
Which of the following possible isomers of butanol has a chiral centre
Options
(a) CH₃CHOHCH₂CH₃ (b) (CH₃)₂CH.CH₂OH (c) (CH₃)₃C.OH (d) (CH₃)CH₂CH₂CH₂OH
Correct Answer:
CH₃CHOHCH₂CH₃
Explanation:
Chiral centre is an atom (mostly carbon) which […]
A liquid is in equilibrium with its vapour at its boiling point.The molecules in the two phases have equal
Options
(a) kinetic energy (b) total energy (c) potential energy (d) intermolecular energy
Correct […]
In flowering plants, a mature male gametophyte is derived from a pollen mother cell by
Options
(a) two mitotic divisions (b) one meiotic and two mitotic divisions (c) three mitotic divisions (d) a […]
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