First stable product of dark reaction in C₃ plants is
Options
(a) PEP (b) RuBP (c) PGA (d) OAA
Correct Answer:
PGA
Explanation:
In C₃ plants, the carbon dioxide combines with ribulose 1, 5-diphosphate […]
Food in plants is transported mainly as
Options
(a) starch (b) glucose (c) glycogen (d) sucrose
Correct Answer:
sucrose
Explanation:
Carbohydrates are translocated in the phloem. Analysis of the phloem exudates of sixteen tree […]
CO₂ fixation in bundle sheath cells occurs in
Options
(a) C₄ plants (b) C₃ plants (c) CAM plants (d) C₄ plants & C₃ plants & CAM plants
Correct Answer:
C₄ plants
Explanation:
In C₄ […]
Excitation of chlorophyll due to light is a
Options
(a) photooxidation reaction (b) endergonic reaction (c) thermochemical reaction (d) photochemical reaction
Correct Answer:
photooxidation reaction
Explanation:
Excitation of chlorophyll due to light is a […]
In a chloroplast, the highest number of protons are found in
Options
(a) Stroma (b) Lumen of thylakoids (c) Inter-membrane space (d) Antennae complex
Correct Answer:
Lumen of thylakoids
Explanation:
Proton concentration is […]
If bundle sheath cells of the C₄ plants are infected by an organism, which utilize CO₂ efficiently then which process will be affected very first
Options
(a) PGAL → RUBP (b) PGAL + […]
Hill reaction occurs in
Options
(a) High altitude plants (b) Total darkness (c) Absence of water (d) Presence of ferredoxin
Correct Answer:
Presence of ferredoxin
Explanation:
No explanation available. Be the first to […]
Emerson’s enhancement effect and Red drop have been instrumental in the discovery of
Options
(a) Photophosphorylation and non-cyclic electron transport (b) Two photosystems operating simultaneously (c) Photophosphorylation and cyclic electron transport (d) Oxidative […]
During photochemical reactions of photosynthesis
Options
(a) Liberation of oxygen takes place (b) Formation of ATP and NADPH₂ take place (c) Liberation of O₂ and formation of ATP and NADPH₂ take place (d) […]
Dimorphic chloroplasts are present in
Options
(a) Sugarcane(C₄) (b) Cotton (c) Pea (d) Mango
Correct Answer:
Sugarcane(C₄)
Explanation:
Sugarcane is C₄ plant. The chloroplasts in C₄ leaves are dimorphic (Two morphologically) distinct types). […]
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