Prepare for NEET Biology Photosynthesis in Higher Plants with MCQs & PYQs on NEET.GUIDE. Get free practice, previous year questions, and expert guidance to grasp light and dark reactions.
The absorption spectrum of chlorophyll a and b shows peaks in the blue and red regions. Which statement best explains the green color of leaves?
Green light is preferentially absorbed by chlorophyll.
Green light is converted to heat energy within the leaf.
Green light is primarily reflected and transmitted, not absorbed.
Chlorophyll does not interact with green light.
Under conditions of high light intensity and limited CO2 availability, which process is most likely to be favored in chloroplasts?
Enhanced Calvin cycle activity
Increased non-cyclic photophosphorylation
Photorespiration
Increased synthesis of chlorophyll
The precise location of the oxygen-evolving complex (OEC) within the chloroplast is:
Stroma
Outer chloroplast membrane
Lumen side of the thylakoid membrane
Inner chloroplast membrane
Which of the following is NOT a direct product of the light-dependent reactions of photosynthesis?
ATP
NADPH
O2
Glucose
Given below are two statements:
Statement I: The primary acceptor in plants is phosphoenolpyruvate and is found in the mesophyll cells.
Statement II: Mesophyll cells of plants lack RuBisCo enzyme
In the light of the above statements, choose the correct answer from the options given below:
Both Statement I and Statement II are true and Statement II is the correct explanation of Statement I
Both Statement I and Statement II are true but Statement II is not the correct explanation of Statement I
Statement I is true but Statement II is false
Statement I is false but Statement II is true
Which of the following correctly describes the primary acceptor and its location in plants?
Ribulose-1,5-bisphosphate (RuBP) in mesophyll cells
Phosphoenolpyruvate (PEP) in mesophyll cells
RuBisCo in bundle sheath cells
Phosphoenolpyruvate (PEP) in bundle sheath cells
In plants, the enzyme responsible for the initial fixation of is located in:
Mesophyll cells
Bundle sheath cells
Stomata
Vascular bundles
Which enzyme is absent in the mesophyll cells of plants but present in their bundle sheath cells?
PEP carboxylase
Carbonic anhydrase
RuBisCo
ATP synthase
The spatial separation of initial fixation and the Calvin cycle in plants is primarily achieved by the compartmentalization of:
Enzymes involved in the pathway
Mesophyll and bundle sheath cells
Chloroplasts within the cells
Vascular system of the leaf
Which of the following statements is INCORRECT concerning the energy release during ATP synthesis via chemiosmosis?
The proton gradient across the inner mitochondrial membrane drives ATP synthesis.
ATP synthase utilizes the energy stored in the proton gradient to phosphorylate ADP.
Oxygen acts as the final electron acceptor in the electron transport chain, contributing to the proton gradient.
ATP hydrolysis releases energy during chemiosmosis.
