PYQSide ExamsMy practice

Photosynthesis in Higher Plants · Question 31

NEET 2017MCQMedium📈 Topic in 0% papers+4−1
1

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.

Answer

(2) C3 plants respond to higher temperature with enhanced photosynthesis while C4 plants have much lower temperature optimum.

Solution

As per NCERT, C4 plants respond to higher temperatures and show a higher rate of photosynthesis, while C3 plants have a much lower temperature optimum.

∴ Statement (2) has the two plant types interchanged ⇒ it is not correct.

(1) Increase in CO2 concentration up to 0.05% increases the rate of CO2 fixation ⇒ correct.

(3) Tomatoes and bell pepper are grown in CO2-enriched greenhouses for higher yields ⇒ correct.

(4) Light saturation occurs at 10% of full sunlight ⇒ correct.

Answer: (2)

NEET 2017

Keep practising — Photosynthesis in Higher Plants

2

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
3

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)
4

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)
5

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)
6

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)
7

In photosynthesis, the light-independent reactions take place at

  1. photosystem II
  2. stromal matrix
  3. thylakoid lumen
  4. photosystem I.
AIPMT 2015
8

Bundle sheath cells :

  1. lack both RuBisCo and PEP carboxylase
  2. are rich in PEP carboxylase
  3. are rich in RuBisCo
  4. lack RuBisCo
NEET 2013 (Karnataka)
9

Read the following four statements (A – D). How many of the above statements are right?

  1. Two
  2. Three
  3. Four
  4. One
AIPMT 2012 (Mains)
10

A process that makes important difference between C3 and C4 plants is

  1. transpiration
  2. glycolysis
  3. photosynthesis
  4. photorespiration.
AIPMT 2012 (Prelims)
11

The correct sequence of cell organelles during photorespiration is

  1. chloroplast, Golgi-bodies, mitochondria
  2. chloroplast, rough endoplasmic reticulum, dictyosomes
  3. chloroplast, peroxisome, mitochondria
  4. chloroplast, vacuole, peroxisome.
AIPMT 2012 (Prelims)

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)