Class 10 Science Chapter 8: Heredity — practice questions with answers
Free practice for Class 10 Science, Chapter 8: Heredity. Try the solved questions below, then take a free test with instant marking and explanations.
46 questions20 easy, 17 medium, 9 hardNCERT · CBSE · State boards
Sample questions with solutions
Q1. Who worked out the main rules of inheritance using garden pea plants?
- Gregor Johann Mendel
- Charles Darwin
- Robert Hooke
- Louis Pasteur
Show answer
Answer: A. Gregor Johann Mendel
Why: Mendel used contrasting traits of garden peas. [p.129]
Why: Mendel used contrasting traits of garden peas. [p.129]
Q2. A trait that is expressed in the F1 generation is called a ______ trait.
Show answer
Answer: dominant
Why: Tallness was dominant over shortness. [p.130]
Why: Tallness was dominant over shortness. [p.130]
Q3. A trait that is not expressed in the F1 generation but reappears in F2 is called a ______ trait.
Show answer
Answer: recessive
Why: Shortness was recessive. [p.130]
Why: Shortness was recessive. [p.130]
Q4. Which is NOT one of the contrasting characters Mendel studied in peas?
- Leaf colour on the stem tip
- Round and wrinkled seeds
- Tall and short plants
- Violet and white flowers
Show answer
Answer: A. Leaf colour on the stem tip
Why: He studied seed shape, height and flower colour among others. [p.130]
Why: He studied seed shape, height and flower colour among others. [p.130]
Q5. Human females have which pair of sex chromosomes?
- XX
- XY
- YY
- XO
Show answer
Answer: A. XX
Why: Males have XY. [p.132]
Why: Males have XY. [p.132]
Q6. In some reptiles, the temperature at which fertilised eggs are kept decides the sex of the offspring.
True or false?
Show answer
Answer: True
Why: Snails can change sex. [p.132]
Why: Snails can change sex. [p.132]
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Frequently asked questions
How many practice questions are there for Class 10 Science Chapter 8: Heredity?
46 questions (20 easy, 17 medium, 9 hard). A few are solved on this page; the free test shows the answer and explanation for every question after you submit.
Is this chapter from the NCERT book?
Yes — it follows the NCERT Class 10 Science syllabus, used by CBSE and many state boards.