ICSE Class 10 Organisms and Populations — Mock Test (2027)
Free online mock test for Organisms and Populations (ICSE Class 10 Botany) — 89 competency-based questions based on the latest CISCE 2027 syllabus, with instant marking. Try the samples below, then take the full test free.
What to expect: This mock test covers key concepts from the Organisms and Populations chapter — including application-based and competency-focused questions aligned with how ICSE actually sets the paper.
Tip: Attempt without notes first to identify gaps, then review explanations for any wrong answers. Retake after a few days for best retention.
Sample questions
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1.Using the integral form Nt = N0 e^(rt) for exponential growth, which statement correctly describes the curve obtained when N is plotted against time?
- A.A J-shaped curve, since the population increases at an ever-faster rate
- B.An S-shaped curve that flattens at carrying capacity
- C.A straight horizontal line
- D.A declining curve approaching zero
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2.For aquatic animals, which abiotic factor is the most important, with productivity and distribution of plants also being heavily dependent on it on land?
- A.Water
- B.Wind
- C.Atmospheric pressure
- D.Soil colour
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3.Adaptations such as the kangaroo rat's ability to meet water needs through internal fat oxidation and concentrate its urine are evolved features that help an organism to:
- A.Survive and reproduce in its habitat
- B.Increase atmospheric carbon dioxide
- C.Reduce its intrinsic rate of increase
- D.Convert into a different species instantly
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4.In the logistic growth equation dN/dt = rN[(K-N)/K], which statement is NOT correct?
- A.K represents the carrying capacity of the habitat
- B.r is the intrinsic rate of natural increase
- C.When N equals K, the rate of growth dN/dt becomes zero
- D.The model assumes resources are unlimited
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5.Assertion (A): Under unlimited resource conditions, a population grows exponentially and produces a J-shaped curve when N is plotted against time. Reason (R): The carrying capacity (K) of the habitat limits the population to an asymptote.
- A.Both A and R are true and R is the correct explanation of A
- B.Both A and R are true but R is NOT the correct explanation of A
- C.A is true but R is false
- D.A is false but R is true
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