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

Which of the following is/are not carrectly mathched pairs ? (a) (ii) and (iii) (b) (i) and (iv) (c) (v) only (d) (ii) only

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

Which of the following statement is / are incorrect ? (i) Green light falling in the range of wavelength 500 -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.

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 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

In which of the following microorganisms, mitosis does not occur? (a) Green algae (b) Fungi (c) Bacteria (d) Higher plants

If A=4sintheta+cos^2theta, then 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 sintheta=1/2dot (d) Minimum value of A occurs when maximum value of sin theta =1

Which of the following statements are incorrect? (A) Digestion takes place in spongocoel in sponge (B) Nitrogenous waste of protozoans is ammonia (C) Leishmania is a digenetic parasite (D) Only intracellular digestion takes place in coelenteron of cnidaria

Which of the following statements is correct about diffusion and osmosis ? (i)In Osomosis, a semipermeable membrane is used while diffusion is without membrane . (ii) In osmosis, movement of molecules occurs in one direction while in diffusion, movement occurs in all directions (iii)In osmosis only the solvent moves while in diffusion both solute and solvent move

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.