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.

Sample questions

1. 1.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
2. 2.An orchid growing as an epiphyte on a mango branch, and barnacles growing on the back of a whale, both represent the same type of interaction because in each case:
   • A.One species benefits and the other is neither harmed nor benefited
   • B.Both species benefit equally
   • C.Both species are harmed
   • D.One species kills and eats the other
3. 3.Cuscuta, a parasitic plant growing on hedge plants that has lost its chlorophyll and leaves and derives nutrition from its host, is an example of:
   • A.Parasitism
   • B.Mutualism
   • C.Commensalism
   • D.Competition
4. 4.Which of the following is the correct definition of mutualism with an example?
   • A.An interaction that confers benefits on both interacting species, e.g., lichens
   • B.An interaction in which both species suffer, e.g., flamingoes and fishes
   • C.An interaction in which one benefits and the other is unaffected, e.g., cattle egret and cattle
   • D.An interaction in which one benefits at the cost of the other, e.g., liver fluke and host
5. 5.In the integral form of the exponential growth equation, Nt = N0 e^(rt), the symbol e represents:
   • A.The base of natural logarithms (2.71828)
   • B.The carrying capacity
   • C.The emigration rate
   • D.The intrinsic rate of increase