Choose the incorrect statement regarding early experiments on photosynthesis

1. Priestley experiment revealed the essential role of air in the growth of a green plant

2. Ingenhousz showed that sunlight is essential to the plant processes

3. It is green parts of the plants that can release oxygen

4. Von Sachs provided evidence for production of carbon dioxide when plants grow

There is a clear division of labour within the chloroplast. The membrane system is responsible for

1 Trapping of light energy

2 Conversion of CO₂ into glucose

3 Consumption of ATP and NADPH

4 Providing site for dark reaction

The evolution of C₄ photosynthetic system is probably one of the strategies for

1. Maximising the availability of CO₂ and minimising the loss of H₂O

2. Minimising the loss of O₂ and maximising the avilability of H₂O

3. Minimising the availability of CO₂ and maximising the loss of H₂O

4. More than one option is correct

"Kranz anatomy" is present in

1. All photosynthetic plants

2. Only C₃ plants

3. Only succulent plants

4. Only C₄ plants

CO₂ is utilized for the carboxylation of RuBP inside the bundle sheath cells of

1. Maize, Sorghum

2. Tomato, Bell pepper

3. Cacti, Sedum

4. Rice, wheat

What is the primary acceptor of CO₂ in dark reaction?
1. Ketose sugar
2. Aldose sugar
3. Fatty acid
4. Sucrose

Melvin Calvin used ------- radioactive in-----studies for the discovery of the first CO₂ fixation product.

During chemiosmosis, the transport of proton across the membrane occurs through-
1. Active Transport
2. Facilitated Diffusion
3. Diffusion
4. both 1 and 2

Which of the following acts as a transmembrane channel?

The protons for the reduction of NADP⁺ are taken from-
1. Stroma
2. Lumen of Thylakoid
3. Cytoplasm
4. Matrix