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🔬 Biology  ·  Organisms and Populations  ·  NEET

The fig tree and its specific pollinator wasp show such tight mutual dependence that it best illustrates which phenomenon?

Answer: Co-evolution of partners.

  • A Brood parasitism in plants
  • B Co-evolution of partners
  • C Competitive exclusion
  • D Chemical mimicry

Correct answer: B. Co-evolution of partners

Explanation: Each fig species is pollinated by only its own wasp species, and the wasp uses the fig for egg-laying, a classic case of co-evolution.

Exponential (J-curve) vs Logistic (S-curve) GrowthtimePopulation (N)Exponential (unlimited resources)K (carrying capacity)Logistic (limited resources)Logistic growth slows as N approaches K; exponential growth never slows down

Exponential growth produces an ever-steepening J-curve with no limit, an unrealistic long-term model; logistic growth produces an S-curve that levels off at the carrying capacity K, as growth rate (K−N)/K shrinks to zero once resources are fully used.

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.

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