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

(1) two photosystems operating simultaneously

(2) photophosphorylation and cyclic electron transport. 

(3) Oxidative phosphorylation

(4) photophosphorylation and non-cyclic electron transport

Subtopic:  Emerson's Enhancement Experiment |
Please attempt this question first.

Difficulty Level:


In a chloroplast the highest number of protons are found in

(1) lumen of thylakoids

(2) inter membrane space

(3) antenna complex

(4) Stroma

Subtopic:  Light Reaction: Electron Transport |
Please attempt this question first.
Please attempt this question first.

Difficulty Level:


In photosynthesis, the light-independent reactions take place at 

1. thylakoid lumen 

2. photosystem l

3. photosystem ll

4. stromal matrix

Subtopic:  Light Reactions :1 | Light Reactions |
Please attempt this question first.
Please attempt this question first.

Difficulty Level:


Anoxygenic photosynthesis is characteristic of 

(1) Rhodospirillum

(2) Spirogyra

(3) Chlamydomonas 

(4) Ulva

Subtopic:  Photosynthetic Pigments |
Please attempt this question first.

Difficulty Level:


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

 

Subtopic:  Photorespiration |
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh

Difficulty Level:


PGA as the frist CO2 fixation was discovered in photosynthesis of 

(1) bryophyte

(2) gymnosperm

(3) angiosperm

(4) algae

Subtopic:  Light Reaction: Electron Transport | Light Reaction: Photophosphorylation |
Please attempt this question first.
Please attempt this question first.

Difficulty Level:


C4 -plants are more efficient in photosynthesis than C3 -plants due to 

1. higher leaf area

2. presence of larger number of chloroplasts in the leaf cells. 

3. presence of thin cuticle

4. lower rate of photorespiration

Subtopic:  C4 Plants Examples | Question on C4 Pathway |
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh

Difficulty Level:


Cyclic-photophosphorylation results in the formation of 

1. NADPH

2. ATP and NADPH

3. ATP, NADPH and O2

4. ATP

 

Subtopic:  Light Reactions :1 | Light Reactions :2 | Light Reactions |
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh

Difficulty Level:


THe C4 -plants are photosynthetically more efficient than C3 -plants because

(1) the CO2 compensation point is more

(2) CO2 generated during photorespiration is trapped and recycled through PEP carboxylase

(3) the CO2 efflux is not prevented

(4) they have more chloroplasts.

Subtopic:  C4 Plants Examples | Question on C4 Pathway |
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh

Difficulty Level:


Electrons from excited chlorophyll molecule of photosystem-II are accepted first by

1. cytochrome-b

2. cytochrome-f

3. quinone

4. ferredoxin

Subtopic:  Photosystems |
Please attempt this question first.

Difficulty Level: