Practice Test Sets (Total Questions: 100)

Topic Practice: Organisms and Populations (Test - 1)

50 Questions 0 Attempted 50 Unattempted

About Organisms and Populations MCQ

Master Organisms and Populations for NEET UG with ecological adaptations, population growth models, biotic interactions MCQs, and NCERT-based chapter notes.

This Organisms and Populations MCQ practice set is designed for students preparing for school exams and competitive exams. It contains 100 multiple choice questions divided into 2 test sets of up to 50 questions each. Every question has four options, and after answering you can see the correct option, a detailed explanation and how other users answered.

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Sample Organisms and Populations Questions

In a laboratory population of 100 fruit flies (Drosophila), 4 new births and 2 deaths were recorded during a specific week. What is the calculated per capita birth rate (b) and per capita death rate (d) per fly per week?
- A. b=0.04, d=0.02
- B. b=0.02, d=0.04
- C. b=4.0, d=2.0
- D. b=0.4, d=0.2
If a pond has 20 lotus plants last year and through reproduction 8 new plants are added, taking the current population to 28, calculate the birth rate of lotus population.
- A. 0.4 offspring per lotus per year
- B. 0.28 offspring per lotus per year
- C. 8.0 offspring per lotus per year
- D. 1.4 offspring per lotus per year
In a population, if the intrinsic rate of natural increase (r) is $0.15\text{ per capita per year}$ and the carrying capacity (K) is 500, what is the maximum population growth rate (dN/dt) under logistic growth?
- A. $75\text{ individuals/year}$ (when N=250)
- B. $37.5\text{ individuals/year}$ (when N=250)
- C. $150\text{ individuals/year}$ (when N=500)
- D. $18.75\text{ individuals/year}$ (when N=250)
Which of the following equations correctly represents the Exponential Growth Model in integral form?
- A. Nt=N0ert
- B. $\frac{dN}{dt} = rN\left(\frac{K-N}{K}\right)$
- C. Nt=N0+(B+I)-(D+E)
- D. $\frac{dN}{dt} = rN$
In the Verhulst-Pearl Logistic Growth equation $\frac{dN}{dt} = rN\left(\frac{K-N}{K}\right)$, what does the term $\left(\frac{K-N}{K}\right)$ signify?
- A. Intrinsic biotic potential
- B. Environmental resistance factor / Unutilized carrying capacity fraction
- C. Population mortality rate
- D. Exponential growth constant

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This page has 50 questions in Test - 1 out of 100 total questions on Organisms and Populations.

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Yes. After you select an option, the correct answer is shown along with an explanation and the percentage of users who chose each option.

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