Sign in
12thPass logo
New chatPYQ LibraryDoubtsRank report
Sign in to see Recents

Your guest activity stays on this device

Sign in to save progress →
Sign in

Organisms and Populations question

2023 · Q66
Guest · filters and generic practice availableBrowsing as a guest · PYQ filters and generic practice are available. Sign in only for personalised features and saved progress.
  1. PYQ Library
  2. /NEET
  3. /Biology
  4. /Organisms and Populations
  5. /2023 · Q66

Organisms and Populations question

2023 · Q66

NEETBiologyOrganisms and PopulationsMCQ+4 / −1

If there are 250 snails in a pond, and within a year their number increases to 2500 by reproduction. What should be their birth rate per snail per year ?

  1. A
    10
  2. B
    9
  3. C
    25
  4. D
    15
View written solutionFree

Correct answer: B

Birth rate =ΔNNΔt=\frac{\Delta \mathrm{N}}{\mathrm{N} \Delta \mathrm{t}}=NΔtΔN​

Here, N=250 N=250N=250

$$ \begin{aligned} \Delta \mathrm{t} & =1 \text { year } \\ \Delta \mathrm{N} & =2500-250 \\ & =2250 \end{aligned}

<br/><br/>$$ \begin{aligned} \text { Birth rate } & =\frac{2250}{250 \times 1} \\\\ & =9 \end{aligned}
PreviousNext

More from Organisms and Populations

  • Given below are two statements: Statement I : Gause’s ‘Competitive Exclusion Principle’ states that two closely related species competing for the same resources cannot co-exist indefinitely and competitively inferior one will be eliminated…2023 · MCQ
  • Match List I with List II. Choose the correct answer from the options given below. Includes table2023 · MCQ
  • Match List I with List II. Choose the correct answer from the options given below: Includes table2023 · MCQ
  • Which one of the following statements cannot be connected to Predation?2022 · MCQ
  • While explaining interspecific interaction of population, (+) sign is assigned for beneficial interaction, (−) sign is assigned for detrimental interaction and (0) for neutral interaction. Which of the following interactions can be…2022 · MCQ
  • If '8' Drosophila in a laboratory population of '80' died during a week, the death rate in the population is ___________ individuals per Drosophila per week.2022 · MCQ
  • Amensalism can be represented as :2021 · MCQ
  • In the exponential growth equation Nt = N0ert, e represents2021 · MCQ