Plant physiology MCQs 1


Question #1: Callus exposed to low auxin and moderate cytokinin concentration will result in

Question #2: On girdling which part of the plant will die first?

Question #3: In ripening fruit, photosynthetic chloroplast becomes non-photosynthetic

Question #4: Gibberellins are known to break dormancy in cereal seeds. This is due to the secretion of

Question #5: Respiratory quotient of carbohydrates with associated organic acid synthesis is

Question #6: In an experiment, the carbon dioxide available to a C3 was labelled with a radioactive isotope and the amount of radioactivity in the chloroplast was measured. As photosynthesis proceeded, in which of the following molecules did the radioactivity first appears?

Question #7: The region where a plant organ is wounded shows

Question #8: Mohl’s half leaf experiment is to prove that

Question #9: When light strikes chlorophyll molecules in a photosynthetically active chloroplast, they lose electrons. What is the ultimate source of replacement of electrons?

Question #10: Under conditions of high atmospheric humidity, hardly any Calcium is transported to developing fruits, this is caused by

Also read:photophosphorylationGlycolysis Mnemonic.

ALSO WATCH: Plant water relationsElectron transport chainPhotophosphorylation


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