The Question is from neet-botany photosynthesis-in-higher-plants , and it was created by the author B VENKAT

Question

Photosystem II

B VENKAT · Accepted Answer

## CORE INFORMATION
✓ **Answer**: [B]
## CONCEPT FRAMEWORK
	**Primary Concept**: Photosystem II structure and function
	**Related Topics**: Photosynthesis, Light-dependent reactions, Oxygen evolution
	**Prerequisites**: Basic knowledge of photosynthesis and photosystems
## SOLUTION PATHWAY
**Given Information**:
	The question is about the characteristics of Photosystem II (PSII).
	We need to identify the correct statement about PSII among the given options.
**Method & Steps**:
	1. Analyze each option against the known properties of Photosystem II.
		Reasoning: We need to evaluate each option based on our understanding of PSII.
	2. Option A: PSII is involved in non-cyclic photophosphorylation, not just cyclic.
		Working: PSII is the first photosystem in the Z-scheme and leads to the production of NADPH and ATP.
		Key Point: Cyclic photophosphorylation only involves PSI.
	3. Option B: PSII is indeed attached to the Oxygen Evolving Complex (OEC).
		Working: The OEC is responsible for water splitting, which is a key function of PSII.
		Key Point: OEC is crucial for oxygen production.
	4. Option C: The reaction center of PSII absorbs light at 680 nm, not 600 nm.
		Working: The reaction center chlorophyll a molecule is called P680.
		Key Point: Wavelength absorbed is specific to each photosystem.
	5. Option D: PSII is present in cyanobacteria.
		Working: Cyanobacteria are photosynthetic bacteria which use PSII.
		Key Point: Cyanobacteria are the first organisms to perform oxygenic photosynthesis.
	6. Select the correct option.
		Result: Option B is the only correct statement.
		Verification: The other options are factually incorrect.
## OPTION ANALYSIS
[A] :x: Incorrect because PSII is primarily involved in non-cyclic photophosphorylation.
[B] ✓: Correct because PSII is associated with the Oxygen Evolving Complex.
[C] :x: Incorrect because PSII's reaction center absorbs light at 680 nm.
[D] :x: Incorrect because PSII is present in cyanobacteria.
## LEARNING AIDS
	**Common Mistakes**:
		1.Confusing cyclic and non-cyclic photophosphorylation: PSII is essential for non-cyclic.
		2.Incorrect wavelength absorption: Remember that PSII absorbs light at 680 nm.
	**Quick Tips**:
		1.Use the mnemonic 'PSII comes before PSI' to remember the order in the light reactions.
		2.Remember PSII's primary role in water splitting and oxygen production.

B VENKAT · Answer

Is involved only in cyclic photophosphorylation

B VENKAT · Answer

The correct Option is "Is attached to Oxygen evolving complex"

B VENKAT · Answer

Has a reaction center which absorbs the 600nm light

B VENKAT · Answer

Is not present in cyanobacteria

NEET Botany Photosynthesis in Higher Plants MCQs

Select Topic

Question Tags

Question Tags

NEET Subjects

Our Bots

Company