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  4. Which of the following statements with regard to photosynthesis is/are correct ? (a) In C4 plants, the primary CO2 acceptor is PEP (b) In the photosynthetic process PS II absorbs energy at or just below 680 nm (c) The pigment that is present in the pigment system I is P683

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Q. Which of the following statements with regard to photosynthesis is/are correct ?
(a) In $C_4$ plants, the primary $CO_2$ acceptor is PEP
(b) In the photosynthetic process PS II absorbs energy at or just below $680 \,nm$
(c) The pigment that is present in the pigment system I is $P_{683}$

KEAMKEAM 2008Photosynthesis in Higher Plants

Solution:

In $C_3$ plants, the primary carbon dioxide acceptor is RuBP.
In the light reaction of photosynthesis, PS-II absorbs energy at or just below 680 nm, while PS-I absorbs energy at 700 nm.