2023 Organisms and PopulationsPopulation Attributes – Growth Models and Age Pyramids Medium Question 20 of 90 in Organisms and Populations

Match List-I with List-II.

Column I

  • A. Logistic growth
  • B. Exponential growth
  • C. Expanding age pyramid
  • D. Stable age pyramid

Column II

  • I. Unlimited resource availability condition
  • II. Limited resource availability condition
  • III. The percent individuals of pre-reproductive age is largest followed by reproductive and post reproductive age groups
  • IV. The percent individuals of pre-reproductives and reproductive age group are same

Correct answer: A → II, B → I, C → III, D → IV

Solution

Logistic growth occurs with limited resources and exponential growth with unlimited resources.

Logistic growth – A population growing in a habitat with limited resources. Exponential growth – Any species growing exponentially under unlimited resource conditions can reach enormous population densities in a short time. Expanding age pyramids – The percent individuals of pre-reproductive age is largest followed by reproductive and post reproductive age groups. Stable age pyramid – The percent individuals of pre-reproductives and reproductive age group are same.

Concept logistic and exponential growth; age pyramids

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90 questions from this chapter have appeared across 25 exam years.