Which of the following is incorrect about cyclic ETS?
(A) Only PS I is involved
(B) It occurs only when light of wavelength beyond "680nm" is available for excitation.
(C) Synthesis of ATP occurs
(D) Synthesis of NADPH + H+ occurs.

Which process also occurs when only light of wavelengths beyond 680 nm are available for excitation?

the condition(s) under which cyclic photophosphorylation occurs is/are a. light of wavelength beyond 680 nm b. anaerobic conditions c. poor CO_2 availability

In which of the following compounds resonance does not occurs (a) H_2O (b) SiO_2 (c ) SO_2 (d) CO_2

If A = 4 sin theta + cos^(2) theta , which of the following is not true ? (A) Maximum value of A is 5 . (B) Minimum value of A is -4 (C) Maximum value of A occurs when sin theta = 1//2 (D) Minimum value of A occurs when sin theta = 1 .

Which of the following statement is / are incorrect ? (i) Green light falling in the range of wavelength 500 0 -580 nm is least effective for photosynthesis. (ii) In non - cyclic photophosphorylation, the electron expelled from the reaction centre is not cycled back , though its loos is compensated by electrons from the photolysis of water . (iii) Chl a , Chl b , carotenoids , and xanthophylls are insoluble in organic solvents. (iv) 400-700 nm light is used in photosynthesis also known as PAR. (v) Red light is the most effective for photosynthesis.

Which of the following is/are incorrect ? (A) In nature food chain exist not food web (B) Gene flow occur between two different population (C) Flow of energy in ecosystem is linear (D) All ecosystem are constant in size. (E) Plants capture onlt 2-10% of the PAR

Which of the following statements are true about amphibians? a. they are cold-blooded b. Respiration occurs through gills, skin and lungs. c. they are poikilotherms d. Respiration occurs only through gills and skin.

Which one of the following is correct about lysosomes (A) It generates ATP by oxidation of food (B) Contains hydrolases which are optimally active at acidic PH (C) Double membrane bound structure (D) A membranous structure mainly associated with protein synthesis