ICSE Class 10

ICSE Class 10 Genetics — Basic Fundamentals — Mock Test (2027)

Free online mock test for Genetics — Basic Fundamentals (ICSE Class 10 Biology) — 20 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 Genetics — Basic Fundamentals 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.

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Sample questions

  1. 1.Find out the progeny of a marriage between a colour blind man (X^c Y) and a carrier woman (X^C X^c). What percentage of their sons will be colour blind?
    • A.50%
    • B.25%
    • C.75%
    • D.100%
  2. 2.What is genetic engineering?
    • A.Study of human anatomy
    • B.Technique to alter genetic constitution by introducing new genes
    • C.Observation of plants in natural habitat
    • D.Study of animal behavior
  3. 3.Match the terms in column I with their explanations in column II.
    Column I (Term)Column II (Explanation)
    a. Genetics(i) Chromosomes similar in size and shape
    b. Autosomes(ii) The alternative forms of a gene
    c. Recessive gene(iii) Study of laws of inheritance of characters
    d. Allele(iv) A gene that can express only when in a similar pair
    e. Homologous chromosomes(v) Chromosomes other than the pair of sex chromosomes.
  4. 4.Which of the following did Mendel achieve by removing reproductive parts of the flower in pea plants?
    • A.Improved plant growth
    • B.Prevented self-pollination
    • C.Enhanced genetic variation
    • D.Increased flower size
  5. 5.Which of the following correctly distinguishes a monohybrid cross from a dihybrid cross?
    • A.Monohybrid yields 3:1 ratio; dihybrid yields 9:3:3:1 ratio in F₂
    • B.Monohybrid involves two traits; dihybrid involves one trait
    • C.Monohybrid follows independent assortment; dihybrid does not
    • D.Monohybrid produces only homozygous offspring; dihybrid produces heterozygous

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