The wavelength of light abosorbed by Pr form of phytochrome is :

(1) 640 nm

(2) 680 nm

(3) 720 nm

(4) 620 nm

Subtopic:  Photosystems |
 77%
NEET - 2007
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints

In photosystem-I, the first electron acceptor is :

(1) ferredoxin

(2) cytochrome

(3) plastocyanin

(4) an iron-sulphur protein

Subtopic:  Photosystems |
NEET - 2006
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints

During photorespiration, the oxygen consuming reaction(s) occur in :

(1) stroma of chloroplasts and mitochondria

(2) stroma of chloroplasts and peroxisomes

(3) grana of chloroplasts and peroxisomes

(4) stroma of chloroplasts

Subtopic:  Photorespiration |
NEET - 2006
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints

advertisementadvertisement

Photorespiration is favoured by

(1) high O2 and low CO2 concentration

(2) low O2 and high CO2 concentration

(3) low light intensity

(4) low temperature.

Subtopic:  Photorespiration |
 77%
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints

The C4 plants grow very efficiently in warm climates because they

(1) consume fewer ATP molecules for glucose synthesis

(2) minimize photorespiratory losses

(3) have more efficient chloroplasts

(3) contain enzymes which are not inactivated at high temperatures.

Subtopic:  C4 Plants Examples | Question on C4 Pathway |
 51%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

Following is needed in the ionic form during non-cyclic photophosphorylation but not during cyclic photophosphorylations in higher plants. 

(1) copper

(2) iron

(3) manganese

(4) zinc

Subtopic:  Light Reactions :1 | Light Reactions :2 | Light Reactions |
 65%
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints

advertisementadvertisement

Production of NADPH in a chloroplast takes place during

1. cyclic photophosphorylation

2. non-cyclic photophosphorylation

3. series photophosphorylation

4. substrate level photophosphorylation.

Subtopic:  Light Reactions :2 | Light Reactions |
 87%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

The photoautotrophic organisms that do not split water to obtain reducing power are 

(1) purple bacteria 

(2) cyanobacteria

(3) green plants

(4) none of these

Subtopic:  Historical View: Experiments |
 64%
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints

Dark reaction occurs

(1) only in light

(2) only in the absence of light

(3) independent of light

(4) both (1) and (3).

Subtopic:  Dark Reaction: Biosynthetic Phase |
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

advertisementadvertisement

Photorespiration, usually occurs in

(1) one cell organelle

(2) two cell organelles

(3) three cell organelles

(4) four cell organelles.

Subtopic:  Photorespiration |
 66%
AIIMS - 2001
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints