Which gas is primarily released by plants during night hours due to respiration in the absence of photosynthesis?

Heterophyllous development in response to environment is an example of which of the following phenomena?

Find the INCORRECT statement(s) about photosynthesis from the following: A. The water splitting complex is associated with PS I. B. C4 plants use the C3 pathway of CO2 fixation as the main biosynthetic pathway. C. In C4 plants, photorespiration does not occur. D. C3 plants exhibit 'Kranz' anatomy. E. ATP synthesis in chloroplast occurs through chemiosmosis. Choose the correct answer from the options given below:

Which one of the following is NOT a characteristic feature of plant cells in the phase of elongation?

How many ATP and NADPH molecules are required to make one molecule of glucose through the Calvin pathway?

Assertion (A): In plant cells, cellulose microfibrils in the primary cell wall are oriented perpendicular to the axis of cell elongation, allowing cells to elongate preferentially along their main axis. Reason (R): Cellulose microfibrils are synthesised by rosette terminal complexes (RTCs) in the plasma membrane that move along cortical microtubule tracks, depositing microfibrils in the direction of microtubule orientation.

Which of the following statements about phloem loading is correct?

Which region of the chloroplast thylakoids is primarily involved in housing Photosystem II (PSII) reaction centres?

Photochemical reactions (light reactions) of photosynthesis take place in: