Phosphoenol pyruvate (PEP) is the primary CO2 acceptor in
(a) C4 plants
(b) C2 plants
(c) C3 and C4 plants
(d) C3 plants.
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Ans: (a) C4 plants.
Explanation: In C4 plants primary CO2 acceptor is Phosphoenol pyruvate and in presence of enzyme PEPcase it forms oxaloacetic acid (OAA).
A disease caused by an autosomal primary non disjunction is (a) Klinefelter's syndrome (b) Turner's syndrome (c) sickle cell anaemia (d) Down's syndrome.