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Q.71 Concept of totipotency in plant was demonstrated by CV Raman T. Morgan G. Haberlandt EC Cocking Gottlieb Haberlandt first proposed and demonstrated the concept of totipotency in plant cells […]

Q.70 Match List I with List II : List I Enzymes List II Reaction Catalysed (A) Nitrate reductase (B) Alternative oxidase (C) Aconitase (D) ACC Oxidase (I) Conversion of 1 […]

Q.69 Given below are two statements: Statement I : The cuticle coats the outer cell walls of the epidermis on the aerial parts of plants and helps reducing water loss […]

Q.68 Choose the correct statements regarding Gibberellins. (A) All GAs possess a tetracyclic ent-gibberellane skeleton (B) GA biosynthesis inhibitors (Cycocel) help reducing plant stem length and lodging (C) GAs are […]

Q.67 Select the enzyme involved in catalysis of substrate-level phosphorylation in citric acid cycle. Aconitase Succinate dehydrogenase Succinyl – CoA synthetase Fumarase Succinyl-CoA synthetase catalyzes the sole substrate-level phosphorylation step […]

Q.66 Sucrose, a transportable form of carbon and energy in most plants, is synthesized in Chloroplast Cytosol Mitochondria Endoplasmic reticulum Sucrose serves as the primary transportable form of carbon and […]

Q.65 Blue light elicits following responses for plants (A) It stimulates asymmetric growth (B) Inhibits stem elongation (C) Stimulates stomatal opening (D) Deactivates proton pump (E) Stimulates bending of stem […]

Q.64 Given below are two statements: One is labelled as Assertion (A) and the other is labelled as Reason (R): Assertion (A): Positive xylem pressure causes exudation of sap through […]

Q.63 Oxidation of H2O to produce O2 is performed by: (1) PS I in thylakoid (2) PS II in thylakoid (3) PS I in stroma (4) PS II in stroma […]

Q.62 The most important auxin present in higher plant is: (1) IAA (2) 4-Cl-IAA (3) IBA (4) 2, 4-D The most important auxin in higher plants is IAA (option 1). Option Breakdown […]