PYQSide ExamsMy practice

Photosynthesis in Higher Plants · Question 26

NEET (UG) 2021MCQEasy📈 Topic in 38% papers+4−1
1

Which of the following statements is incorrect?

  1. Cyclic photophosphorylation involves both PS I and PS II
  2. Both ATP and NADPH + H+ are synthesized during non-cyclic photophosphorylation.
  3. Stroma lamellae have PS I only and lack NADP reductase
  4. Grana lamellae have both PS I and PS II

Answer

(1) Cyclic photophosphorylation involves both PS I and PS II

Solution

(1) Incorrect – as per NCERT, cyclic photophosphorylation involves only PS I; the electron is circulated within the photosystem.

(2) Correct – non-cyclic photophosphorylation (Z-scheme, both photosystems) produces ATP as well as NADPH + H+.

(3) Correct – the stroma lamellae membranes lack PS II as well as NADP reductase.

(4) Correct – grana lamellae have both PS I and PS II.

Answer: (1)

NEET (UG) 2021

Keep practising — Photosynthesis in Higher Plants

2

In light reaction, plastoquinone facilitates the transfer of electrons from

  1. PS-I to ATP synthase
  2. Cytb6f complex to PS-I
  3. PS-I to NADP+
  4. PS-II to Cytb6f complex
NEET (UG) 2020
3

The oxygenation activity of RuBisCO enzyme in photorespiration leads to the formation of

  1. 1 molecule of 3-C compound and 1 molecule of 2-C compound
  2. 1 molecule of 3-C compound
  3. 1 molecule of 6-C compound
  4. 2 molecules of 3-C compound
NEET (UG) 2020
4

Oxygen is not produced during photosynthesis by

  1. Cycas
  2. Green sulphur bacteria
  3. Chara
  4. Nostoc
NEET 2018
5

Which of the following is not a product of light reaction of photosynthesis?

  1. Oxygen
  2. NADH
  3. ATP
  4. NADPH
NEET 2018
6

With reference to factors affecting the rate of photosynthesis, which of the following statements is not correct?

  1. Increasing atmospheric CO2 concentration up to 0.05% can enhance CO2 fixation rate.
  2. C3 plants respond to higher temperature with enhanced photosynthesis while C4 plants have much lower temperature optimum.
  3. Tomato is a greenhouse crop which can be grown in CO2-enriched atmosphere for higher yield.
  4. Light saturation for CO2 fixation occurs at 10% of full sunlight.
NEET 2017
7

Phosphoenol pyruvate (PEP) is the primary CO2 acceptor in

  1. C4 plants
  2. C2 plants
  3. C3 and C4 plants
  4. C3 plants
NEET 2017
8

In a chloroplast the highest number of protons are found in

  1. intermembrane space
  2. antennae complex
  3. stroma
  4. lumen of thylakoids.
NEET 2016 (Phase 1)
9

Emerson's enhancement effect and Red drop have been instrumental in the discovery of

  1. photophosphorylation and cyclic electron transport
  2. oxidative phosphorylation
  3. photophosphorylation and non-cyclic electron transport
  4. two photosystems operating simultaneously.
NEET 2016 (Phase 1)
10

A plant in your garden avoids photorespiratory losses, has improved water use efficiency, shows high rates of photosynthesis at high temperatures and has improved efficiency of nitrogen utilisation. In which of the following physiological groups would you assign this plant?

  1. CAM
  2. Nitrogen fixer
  3. C3
  4. C4
NEET 2016 (Phase 1)
11

The process which makes major difference between C3 and C4 plants is

  1. glycolysis
  2. Calvin cycle
  3. photorespiration
  4. respiration.
NEET 2016 (Phase 2)

All Photosynthesis in Higher Plants PYQs →

PDFDownload Photosynthesis in Higher Plants PYQs as PDF Free, with answer key and a QR code to every solution — print it or study offline⬇
All NEET Botany chapters
Class 11The Living WorldBiological ClassificationPlant KingdomMorphology of Flowering PlantsAnatomy of Flowering PlantsCell: The Unit of LifeCell Cycle and Cell DivisionTransport in PlantsMineral NutritionPhotosynthesis in Higher PlantsRespiration in PlantsPlant Growth and Development
Class 12Reproduction in OrganismsSexual Reproduction in Flowering PlantsPrinciples of Inheritance and VariationMolecular Basis of InheritanceStrategies for Enhancement in Food ProductionMicrobes in Human WelfareOrganisms and PopulationsEcosystemBiodiversity and ConservationEnvironmental Issues
Other chaptersBiomolecules (Biology)