Botany/Photosynthesis in Plants Sample Test,Sample questions

Question:
A plant with low CO2 compensation point is

1.Gossypium hirsutum

2.Tidestromia Oblongifolia

3.Leucopoa kingii

4.Atriplex patula

Posted Date:-2019-04-13 09:44:59


Question:
A process that makes important difference between C-3 and C-4 plants is

1.Guttaion

2.Transpiration

3.Photorespiration

4.Photosynthesis

Posted Date:-2019-04-13 09:43:44


Question:
Bacterial photosynthesis involves the

1.PS- I

2.PS- II

3.Both A and B

4.None

Posted Date:-2019-04-13 09:41:42


Question:
Both photosynthesis and respiration require which of the following ?

1.Sunlight

2.Mitochondria

3.Chloroplast

4.None

Posted Date:-2019-04-13 09:41:00


Question:
Chemiosmosis hypothesis given by Peter Mitchel proposes the mechanism of 

1.synthesis of ATP

2.synthesis of ADP

3.synthesis of NADH

4.None

Posted Date:-2019-04-13 10:08:03


Question:
Chloroplast dimorphism is a characteristic feature of

1.C4-Plants

2.Plants with Calvin cycle

3.All plants

4.None

Posted Date:-2019-04-13 09:34:44


Question:
Continuity of cytoplasm from one cell to its neighbouring cells In higher plants is established through

1.Apoplas

2.Symplast

3.Chloroplast

4.Topoplast

Posted Date:-2019-04-13 10:10:27


Question:
During photorespiration, the conversion of phosphoglycolate to glycolate takes place in this cell organelle

1.Mitochondia

2.Chloroplast

3.Ribosome

4.Peroxisome

Posted Date:-2019-04-13 09:33:35


Question:
Energy from light reaction to dark reaction in photosynthesis is transferred in the form of

1.ATP

2.ADP

3.DNA

4.RNA

Posted Date:-2019-04-13 09:26:47


Question:
Etiolation in plants is caused when

1.They have mineral deficiency

2.They are grown in intense light

3.They are grown in blue light

4.They are grown in dark

Posted Date:-2019-04-13 09:32:42


Question:
Ganongs respiroscope is used to demonstrate

1.production of carbon dioxide during aerobic respiration

2.evolution of oxygen during photosynthesis

3.evolution of carbon dioxide during fermentation

4.production of heat during aerobic respiration

Posted Date:-2019-04-13 10:13:57


Question:
Glycolysis - 

1.Reduces two molecules of NAD+ for every glucose molecule processed

2.Takes place in the mitochondria

3.Produces no ATP

4.Has no connection with electron transport chain

Posted Date:-2019-04-13 11:19:15


Question:
Hill reaction occurs in which of the following

1.Total darkness

2.Absence of water

3.Presence of ferricyanide

4.None

Posted Date:-2019-04-13 09:31:30


Question:
How many additional molecules of ATP are needed for net production of one molecule of hexose sugar by C4-plants as compared to C-3 plant ?

1.6

2.8

3.10

4.12

Posted Date:-2019-04-13 09:42:40


Question:
In C3 plants,which among the following is the first stable product of photosynthesis during the dark reaction is

1.3-phosphoglyceric acid

2.Oxaloacetic acid

3.Phosphoglyceraldehyde

4.Acetic acid

Posted Date:-2019-04-13 09:30:46


Question:
In C4 plants, the bundle sheath cells

1.Are rich in PEP carboxylase

2.Have large intercellular spaces

3.Have thin walls to facilitate gaseous exchange

4.None

Posted Date:-2019-04-13 09:29:05


Question:
In CAM plants, CO2 required for photosynthesis enters the plant body during ?

1.Night when the hydathodes are open

2.Night through the stomata which are kept open

3.Daytime through the lenticels

4.Daytime when the stomata are open

Posted Date:-2019-04-13 10:11:32


Question:
In Kranz anatomy the bundle sheath cells have ?

1.Thin walls, no intercellular spaces and several chloroplasts

2.Thick walls, no intercellular spaces and large number of chloroplasts

3.Thin walls, many intercellular spaces and no chloroplasts

4.Thick walls, many intercellular spaces and few chloroplasts

Posted Date:-2019-04-13 09:36:20


Question:
In ___ NADP is converted into NADPH2

1.Cyclic photophosphorylation

2.Photolysis

3.Noncyclic photophosphorylation

4.Oxidative phosphorylation

Posted Date:-2019-04-13 11:20:53


Question:
PGA as the first CO2 fixation product was discovered in photosynthesis of

1.Bryophyte

2.Alga

3.Angiosperm

4.Gymnosperm

Posted Date:-2019-04-13 11:15:26


Question:
Photosynthesis cannot continue for long if during light reaction, only cyclic photophosphorylation takes place. This is because of the following 

1.There is no evolution of O2

2.There is unidirectional cyclic movement of the electrons

3.Photosystem I stops getting excited at a wavelength of light beyond 680 nm

4.None

Posted Date:-2019-04-13 10:15:14


Question:
Photosynthesis in C-4 plants is relatively less limited by atmospheric CO2 levels because

1.The primary fixation of CO2 is mediated via PEP carboxylase

2.Effective pumping of CO2 into bundle sheath cells

3.Rubisco in C4 plants has higher affinity for CO2

4.None

Posted Date:-2019-04-13 09:59:09


Question:
RuBisCO stands for 

1.Ribulose phosphate carboxylase oxygenase

2.Ribulose phosphate carboxylic oxygenase

3.Ribulose bisphosphate carboxylase oxygenase

4.None

Posted Date:-2019-04-13 09:58:00


Question:
The concentration of organic acid in a CAM plant ?

1.increases during night

2.increases during day

3.decreases during night

4.decreases during any time

Posted Date:-2019-04-13 10:12:59


Question:
The law of limiting factors was proposed with particular reference to photosynthesis. who among the following scientist proposed this law ?

1.Blackman

2.Weismann

3.Calvin

4.None

Posted Date:-2019-04-13 09:25:32


Question:
The metabolic pathway which produces carbohydrate is

1.Glycolysis

2.Cyclic electron pathway

3.Calvin cycle

4.none

Posted Date:-2019-04-13 11:18:13


Question:
The net requirement of assimilator power for the formation of 6 hexose molecules in maize plant is

1.190 ATP, 74 NADPH

2.180 ATP, 72 NADPH

3.170 ATP, 70 NADPH

4.160 ATP, 68 NADPH

Posted Date:-2019-04-13 09:56:53


Question:
The pathway that will produce oxygen during photosynthesis is

1.noncyclic electron pathway

2.electron transport pathway

3.cyclic electron pathway

4.light-independent reactions

Posted Date:-2019-04-13 09:55:21


Question:
The ratio between 2-carbon and 3-carbon intermediates having -NH2 group formed in photosynthetic oxidation cycle is

1.3 : 2

2.4 : 2

3.4 : 1

4.2 : 1

Posted Date:-2019-04-13 10:09:17


Question:
The shape of the chloroplast in higher plants is ?

1.Cup-shaped

2.Discoid

3.Reticulate

4.Girdle-shaped

Posted Date:-2019-04-13 09:28:12


Question:
The synthesis of 1 molecule of glucose during Calvin cycle requires a

1.18 molecules of ATP and 12 molecules of NADPH2

2.12 molecules of ATP only

3.16 molecules of ATP and 12 molecules of NADPH2

4.None

Posted Date:-2019-04-13 09:54:27


Question:
Where does bulk fixation of carbon through photosynthesis take place ?

1.Oceans

2.Crop plants

3.Tropical rain forests

4.none

Posted Date:-2019-04-13 11:22:47


Question:
Which among the following doesnt play any role in photosynthesis ?

1.Phycocyanin

2.Anthocyanin

3.Phycoerythrin

4.none

Posted Date:-2019-04-13 11:21:43


Question:
Which among the following enzyme is responsible for primary carboxylation in C-3 plants ?

1.RuBP carboxylase oxygenase

2.Succinic dehydrogenase

3.Hexokinase

4.None

Posted Date:-2019-04-13 10:05:32


Question:
Which among the following In photosystem-I, the first electron acceptor

1.An iron sulphur protein

2.Plastocyanin

3.Cytochrome

4.Chlorophyll

Posted Date:-2019-04-13 09:39:38


Question:
Which among the following is a 4-C compound ?

1.Phosphoglyceric acid

2.Oxaloacetic acid

3.Ribulose biphosphate

4.Ribulose triphosphate

Posted Date:-2019-04-13 09:18:33


Question:
Which among the following is not true about the light reactions of photosynthesis

1.P-680 and P-700 are the reaction centres of PS I an PS II respectively reactions

2.NADPH is not produced in cyclic electrons transport in light reactions

3.The flow of electrons from water to NADP in non-cyclic electron transport produces one ATP

4.None

Posted Date:-2019-04-13 09:46:26


Question:
Which among the following is the best defined function of Manganese in green plants ?

1.Water absorption

2.Photolysis of water

3.Water absorption

4.Calvin cycle

Posted Date:-2019-04-13 10:04:20


Question:
Which among the following is the correct sequence of cell organelles during photorespiration ?

1.Mitochondria - Chloroplast - Peroxisome

2.Chloroplast - peroxisome – mitochondria

3.Peroxisome - Chloroplast - Golgi Body

4.None

Posted Date:-2019-04-13 11:25:47


Question:
Which among the following is the end product of the Calvin cycle ?

1.ATP

2.RuBP

3.ADP

4.None

Posted Date:-2019-04-13 11:16:21


Question:
Which among the following is the first stable compound formed after CO2 fixation In C-3 plants?

1.Oxaloacetic acid

2.Malic acid

3.3-phosphoglycerate

4.none

Posted Date:-2019-04-13 10:07:14


Question:
Which among the following is wrong in relation to photorespiration

1.It is a characteristic of C-4 plants

2.It occurs in daytime only

3.It is a characteristic of C-3 plants

4.It occurs in chloroplasts

Posted Date:-2019-04-13 10:00:32


Question:
Which among the following is wrongly matched ?

1.PS II – P700

2.PEP carboxylase – Mesophyll cells

3.Blackman – Law of limiting factors

4.More than one option is correct

Posted Date:-2019-04-13 09:53:17


Question:
Which among the following pigment absorbs the red and far red light ?

1.Cytochrome

2.Chlorophyll a

3.Chlorophyll c

4.Phytochrome

Posted Date:-2019-04-13 09:17:16


Question:
Which among the following statement is true for ATP ?

1.ATP is a Co-enzyme

2.ATP is prosthetic part of an enzyme

3.ATP is an enzyme

4.ATP is organic ions of enzyme

Posted Date:-2019-04-13 11:17:26


Question:
Which among the following statements regarding C-4 plants is false ?

1.The primary CO2 acceptor is a 5 carbon molecule

2.The primary CO2 acceptor is a 7 carbon molecule

3.Both A and B

4.The initial carboxylation reaction occurs in mesophyll

Posted Date:-2019-04-13 09:51:14


Question:
Which among the following substances yield less than 4 Kcal/mol when its phosphate bond is hydrolyzed ?

1.ATP

2.Creatine Phosphate

3.ADP

4.None

Posted Date:-2019-04-13 11:23:46


Question:
Which fractions of the visible spectrum of solar radiations are primarily absorbed by carotenoids of the higher plants ?

1.Voilet and red

2.Violet and blue

3.red and blue

4.none

Posted Date:-2019-04-13 09:19:44


Question:
Who among the following was discover the process of photophosphorylation ?

1.Blackman

2.Arnon

3.Robert Emerson

4.Ruben

Posted Date:-2019-04-13 10:20:16


Question:
Who enunciated the law of limiting factor for photosynthesis ?

1.Blackman

2.Robert Emerson

3.Calvin

4.None

Posted Date:-2019-04-13 10:17:57


More MCQS

  1. Cells
  2. Bacteriology
  3. Plant harmones
  4. Transport and Mineral Nutrition in Plants
  5. Photosynthesis in Plants
  6. Plant respiration
  7. Algae, Bryophytes, Pteridophytes
  8. Plant Pathology - I
  9. Plant Pathology - II
  10. Kingdom Monera
  11. Wood Anatomy, Xylem and Phloem
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