NEET Biology question

Which option is correct for curve a and b? (graph with carrying-capacity line K; curve 'a' rises steeply without levelling; curve 'b' rises and levels off in a sigmoid shape at K)

(A)dN/dt=r-N | dN/dt=rN(N-K/K) | Exponential | Logistic curve
(B)dN/dt=rN | dN/dt=rN(K-N/K) | Exponential | Logistic curveCorrect
(C)dN/dt=rN | dN/dt=rN(K-N/K) | S-shaped | J-shaped curve
(D)Both (b) and (c)

Answer: (B)

Solution

Curve 'a', which rises without levelling, follows dN/dt=rN and is the exponential (J-shaped) curve, while curve 'b', which levels off

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Question ID VK-126166