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Assertion Reason Test: Photosynthesis In Higher Plants - NEET MCQ


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10 Questions MCQ Test - Assertion Reason Test: Photosynthesis In Higher Plants

Assertion Reason Test: Photosynthesis In Higher Plants for NEET 2024 is part of NEET preparation. The Assertion Reason Test: Photosynthesis In Higher Plants questions and answers have been prepared according to the NEET exam syllabus.The Assertion Reason Test: Photosynthesis In Higher Plants MCQs are made for NEET 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Assertion Reason Test: Photosynthesis In Higher Plants below.
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Assertion Reason Test: Photosynthesis In Higher Plants - Question 1

A : In C4 plants, chloroplasts of bundle sheath cells are granal.

R : PS II is mostly found in the appressed part of granum.

Detailed Solution for Assertion Reason Test: Photosynthesis In Higher Plants - Question 1
In Bundle sheath cells PS II absent which implies agranal chloroplast. 

Assertion Reason Test: Photosynthesis In Higher Plants - Question 2

A : Dark reactions of photosynthesis are temperature controlled processes.

R : Most of the reactions are enzymatic in nature.

Detailed Solution for Assertion Reason Test: Photosynthesis In Higher Plants - Question 2
Enzyme reactions are controlled by temperature.

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Assertion Reason Test: Photosynthesis In Higher Plants - Question 3

A : Dark acidification occurs in CAM plants.

R : Organic acids are decarboxylated during night.

Detailed Solution for Assertion Reason Test: Photosynthesis In Higher Plants - Question 3
Dark acidification is reaction occurs in Night and organic acid like malic acid is decarboxylated during day.

Assertion Reason Test: Photosynthesis In Higher Plants - Question 4

A : Assimilatory power in photosynthesis is generated in ETS occuring in thylakoid membrane.

R : They are needed for CO2 reduction and RuBP regeneration.

Detailed Solution for Assertion Reason Test: Photosynthesis In Higher Plants - Question 4

ATP produced is required for carrying out different metabolic activities, biosynthetic reaction taking place in stroma, responsible for fixation of CO2 and synthesis of sugar. 

Assertion Reason Test: Photosynthesis In Higher Plants - Question 5

A : Light harvesting complexes (LHC) on thylakoid membrane broaden the range of light absorption.

R : They transfer e– to reaction centre.

Detailed Solution for Assertion Reason Test: Photosynthesis In Higher Plants - Question 5
Antenna molecules transfer electron to Reaction Centre.

Assertion Reason Test: Photosynthesis In Higher Plants - Question 6

A : For every CO2 molecule entering C3 cycle, three molecules of ATP and two NADPH are required.

R : Cyclic photophosphorylation takes place to meet the difference in number of ATP.

Detailed Solution for Assertion Reason Test: Photosynthesis In Higher Plants - Question 6
Cyclic photophosphorylation is needed to meet difference in number of ATP, but no correlation with Ist statement.

Assertion Reason Test: Photosynthesis In Higher Plants - Question 7

A : Carotenoids protect plant from excessive heat and prevent photooxidation of chlorophyll.

R : Carotenoids enable a wider range of wavelength of incoming light to be utilised for photosynthesis.

Detailed Solution for Assertion Reason Test: Photosynthesis In Higher Plants - Question 7
Carotenoids provide protection to chlorophyll from nascent oxygen.

Assertion Reason Test: Photosynthesis In Higher Plants - Question 8

A : Biosynthetic phase of photosynthesis depend directly on presence of light.

R : Both ATP and NADPH are not essential for assimilation of CO2 to carbohydrates.

Detailed Solution for Assertion Reason Test: Photosynthesis In Higher Plants - Question 8
Dark reaction is not depend directly on the light. ATP and NADPH is essential for CO2 fixation. 

Assertion Reason Test: Photosynthesis In Higher Plants - Question 9

A : Most of the photosynthesis takes place in the blue and red region of spectrum.

R : Action spectrum shows the amount of energy of different wavelength of light absorbed by pigments.

Detailed Solution for Assertion Reason Test: Photosynthesis In Higher Plants - Question 9
Action spectrum depicts the magnitude of a response of biological system to light as function of wavelength.

For e.g., - action spectrum of photosynthesis can be constructed from measurements of O2 evolution at different wavelengths. 

Assertion Reason Test: Photosynthesis In Higher Plants - Question 10

A : Tropical plants are more efficient in CO2 utilization.

R: C3 plants ensure that RuBisCO functions as  carboxylase minimising oxygenase activity.

Detailed Solution for Assertion Reason Test: Photosynthesis In Higher Plants - Question 10
At high CO2 concentration RuBisCO enzyme acts as carboxylase enzyme.
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