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#photosynthesis

244 public questions tagged with this topic.

What property of visible light explains its role in photosynthesis?

**Infrared waves** λ≈700 nm to 1 mm, f≈10¹² to 4×10¹⁴ Hz, produced by hot bodies and molecular vibrations, wavelength range as per document 700 nm-1 mm, used in remote sensing because IR penetrates haze, thermal imaging detects IR emitted by objects, remote controls, effective for sensing temperature. Visible light has wavelengths that correspond to the energy levels needed to excite chlorophyll molecules in plants, driving the photochemical reactions of photosynthesis. Using c = fλ, E₀/B₀ = c, I_d = ε₀ dΦ_E/dt, and spectrum classification λ = c/f, evaluation yields Suitable energy levels, ill

Ref: NCERT > Physics Book > Electromagnetic Waves > Infrared, Visible Light and Applications

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.