NEET BiologyNCERT Class 12Ecology and Environment
Organisms and Populations: NEET questions with solutions
This chapter covers population attributes, growth models (exponential and logistic), life history and interactions between populations. Marks are lost on J versus S curves, per-capita rates, the Nt+1 equation and interaction signs.
Revise first: NCERT notes for Organisms and PopulationsQuestions
10 questions · answers after you pick
1A population with unlimited food and space increases along a J-shaped curve. This growth is described by dN/dt = rN and is called:Population growthEasySingle correct2An orchid grows on the branch of a mango tree, using it only for support and not harming it. This interaction is:Population interactionsEasySingle correct3A population of 50 snails in a pond produces 10 young ones in a year. What is the birth rate?Population attributesEasySingle correct4Statements I and II below compare logistic and exponential models of population growth. Which of the options is correct?Population growthMediumStatement based5Read the Assertion and the Reason about several closely related warbler species foraging on the same tree, and choose the correct option.CompetitionMediumAssertion–Reason6Match the interaction in Column I with the example in Column II.Population interactionsMediumMatch the following7A population begins with 500 individuals. During a year there are 60 births, 40 deaths, 25 immigrants and 15 emigrants. What is the…Population growthMediumSingle correct8A population grows logistically with r = 0.2 per year and carrying capacity K = 1000. What is dN/dt when N = 250?Population growthMediumSingle correct9When the starfish Pisaster was removed from an enclosed rocky intertidal area, more than ten invertebrate species disappeared. What was the…PredationHardSingle correct10Which statement about competition between species is correct?CompetitionHardSingle correct
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