ICSE Class 10 Plant Growth and Development — Mock Test (2027)

Free online mock test for Plant Growth and Development (ICSE Class 10 Botany) — 74 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.Assertion (A): A sigmoid (S-shaped) growth curve is obtained when the parameter of growth is plotted against time for an organism in a natural environment. Reason (R): In geometric growth the lag phase is followed by a rapid exponential (log) phase, and then by a stationary phase due to limited nutrient supply.
   • 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
2. 2.Growth is best defined as:
   • A.A reversible increase in the size of an organ
   • B.An irreversible permanent increase in the size of an organ, its parts or even an individual cell
   • C.A temporary change in shape due to water uptake
   • D.The loss of capacity to divide
3. 3.Assertion (A): Differentiation in plants is said to be open. Reason (R): Cells or tissues arising out of the same meristem have different structures at maturity, and the final structure is also determined by the location of the cell.
   • 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
4. 4.Which plant growth regulator would you use to 'bolt' a rosette plant?
   • A.Gibberellin
   • B.Abscisic acid
   • C.Auxin
   • D.Cytokinin
5. 5.Which plant growth regulator would you use to induce immediate stomatal closure in leaves?
   • A.Abscisic acid
   • B.Gibberellin
   • C.Cytokinin
   • D.Auxin