📚 StudyHub

🔬 Biology  ·  Organisms and Populations  ·  NEET

If a population of size N is well below the carrying capacity K, the logistic growth equation dN/dt = rN(K-N)/K behaves most similarly to which model?

  • A It approaches a growth rate of zero almost immediately under these conditions
  • B It behaves nearly like exponential growth, since (K-N)/K is close to 1
  • C It behaves like negative growth, with the population actively declining
  • D It is identical to the flattened logistic curve seen exactly at carrying capacity K

Correct answer: B. It behaves nearly like exponential growth, since (K-N)/K is close to 1

Explanation: When N is much smaller than K, the term (K-N)/K is close to 1, so dN/dt approximates rN, making early logistic growth resemble exponential growth before resource limitation slows it.

Concept context

How organisms interact with abiotic factors and respond to stress, plus population attributes, growth models, and interspecific interactions such as predation, competition, and mutualism.

Read the full Organisms and Populations notes →