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#photosynthesis

237 public questions tagged with this topic.

What is the primary function of Photosystem II in photosynthesis?

Photosystem II is responsible for the photolysis of water, which releases oxygen, protons, and electrons. This follows from NCERT principle where relation explains outcome clearly for students.

Ref: NCERT Biology Textbook for Class XI and XII (Botany section), Chapter: Biology - Botany portion covering relevant concept, Topic: Plant structure, physiology and applications.

Which pathway is used by plants such as maize and sugarcane to minimize photorespiration?

Câ‚„ plants, such as maize and sugarcane, use the Câ‚„ pathway to minimize photorespiration and increase COâ‚‚ efficiency. This follows from NCERT principle where the relation explains the outcome clearly for students in simple steps.

Ref: NCERT Biology Textbook for Class XI and XII (Botany section), Chapter: Morphology and Anatomy of Flowering Plants, Topic: Plant structure and tissue systems.

Which external factor is rarely a limiting factor for photosynthesis under natural conditions?

Light is rarely a limiting factor in nature because plants require only about 10% of full sunlight for photosynthesis. This follows from NCERT principle where the relation explains the outcome clearly for students in simple steps.

Ref: NCERT Biology Textbook for Class XI and XII (Botany section), Chapter: Morphology and Anatomy of Flowering Plants, Topic: Plant structure and tissue systems.

Which of the following pigments is responsible for absorbing light energy and transferring it to chlorophyll a?

Accessory pigments like chlorophyll b, xanthophylls, and carotenoids absorb light energy and transfer it to chlorophyll a for photosynthesis. This follows from NCERT principle where relation explains outcome clearly for students.

Ref: NCERT Biology Textbook for Class XI and XII (Botany section), Chapter: Biology - Botany portion covering relevant concept, Topic: Plant structure, physiology and applications.

Which part of the dicot leaf contains chloroplasts and is responsible for photosynthesis?

Mesophyll consists of palisade and spongy parenchyma, both of which contain chloroplasts and perform photosynthesis. This follows from NCERT principle where the relation explains the outcome clearly for students in simple steps.

Ref: NCERT Biology Textbook for Class XI and XII (Botany section), Chapter: Morphology and Anatomy of Flowering Plants, Topic: Plant structure and tissue systems.

What role does PEP carboxylase play in C4 plants?

PEP carboxylase captures CO2 and converts it into oxaloacetic acid (OAA) in C4 plants. This follows from latest NCERT 2026-27 principle explaining the concept clearly for NEET students in simple steps as per rationalized syllabus.

Ref: NCERT Biology Textbook - Latest Edition for Academic Session 2026-27 (Botany section, Rationalized Textbook for Class XI and XII), Chapter: Biology - Botany portion (Latest NCERT Textbooks for Academic Session 2026-27 -

Which of the following correctly describes the role of NADPH in photosynthesis?

NADPH provides reducing power to convert carbon dioxide into glucose in the Calvin cycle. This follows from latest NCERT 2026-27 principle explaining the concept clearly for NEET students in simple steps as per rationalized syllabus.

Ref: NCERT Biology Textbook - Latest Edition for Academic Session 2026-27 (Botany section, Rationalized Textbook for Class XI and XII), Chapter: Biology - Botany portion (Latest NCERT Textbooks for Academic Session 2026-27 -

Which scientist first demonstrated that plants release oxygen during photosynthesis?

Jan Ingenhousz showed that green plants release oxygen in the presence of sunlight. This follows from latest NCERT 2026-27 principle explaining the concept clearly for NEET students in simple steps as per rationalized syllabus.

Ref: NCERT Biology Textbook - Latest Edition for Academic Session 2026-27 (Botany section, Rationalized Textbook for Class XI and XII), Chapter: Biology - Botany portion (Latest NCERT Textbooks for Academic Session 2026-27 -

Which of the following conditions promotes the C4 pathway in plants?

The C4 pathway helps plants avoid photorespiration in hot, dry environments. This follows from latest NCERT 2026-27 principle explaining the concept clearly for NEET students in simple steps as per rationalized syllabus.

Ref: NCERT Biology Textbook - Latest Edition for Academic Session 2026-27 (Botany section, Rationalized Textbook for Class XI and XII), Chapter: Biology - Botany portion (Latest NCERT Textbooks for Academic Session 2026-27 -

Which of the following is a product of the Calvin cycle?

The Calvin cycle produces G3P, which is later used to form glucose and other carbohydrates. This follows from NCERT principle where relation explains outcome clearly for students.

Ref: NCERT Biology Textbook for Class XI and XII (Botany section), Chapter: Biology - Botany portion covering relevant concept, Topic: Plant structure, physiology and applications.