ICSE Class 10 Principles of Inheritance and Variation — Mock Test (2027)
Free online mock test for Principles of Inheritance and Variation (ICSE Class 10 Botany) — 87 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 Principles of Inheritance and Variation 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.Who united the knowledge of chromosomal segregation with Mendelian principles and called it the Chromosomal Theory of Inheritance?
- A.Thomas Hunt Morgan
- B.Walter Sutton and Theodore Boveri
- C.Reginald Punnett
- D.Alfred Sturtevant
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2.Both parents are carriers (heterozygous, HbA HbS) for sickle-cell anaemia. What fraction of their children is expected to be affected (HbS HbS)?
- A.1/4
- B.1/2
- C.3/4
- D.0
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3.For how many years (and over which period) did Mendel conduct his hybridisation experiments on garden peas before proposing the laws of inheritance?
- A.Seven years, 1856-1863
- B.Five years, 1865-1870
- C.Ten years, 1850-1860
- D.Three years, 1900-1903
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4.In humans and Drosophila, which sex is heterogametic?
- A.Female (XX)
- B.Male (XY)
- C.Both sexes equally
- D.Neither sex
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5.All of the following statements about a monohybrid cross are correct EXCEPT:
- A.The F1 generation resembles only one of the parents
- B.The F2 phenotypic ratio is 3:1
- C.The contrasting traits blend in the F1 generation
- D.The recessive trait reappears in the F2 generation
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