Heredity and Evolution Class 10 Assertion and Reason Type Questions have been prepared by CBSE Experts. Solve Assertion and Reason Questions Class 10 Science Chapter 9 Heredity and Evolution for better understanding. The assertion Reason question for Class 10 Science Chapter 9 is prepared on the latest exam pattern.
Students can solve Assertion and Reason Questions for Class 10 Science to boost their preparation Heredity and Evolution 10 Assertion and Reason Type Questions are provided to help students tackle the question asked in the board exam.
Heredity and Evolution Class 10 Assertion Reason Questions
The following questions consist of two statements – Assertion (A) and Reason (R). Answer these questions selecting the appropriate option given below:
(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.
Q.1. Assertion : Genes present in every cell of an organism control the traits of the organisms.
Reason: Gene is specific segment of DNA occupying specific position on a chromosome.
(b) Both A and R are true but R is not the correct explanation of A.
Q.2. Assertion: A child which has inherited X chromosome from father will develop into a girl child.
Reason: Girl child inherits X chromosome from father and Y chromosome from mother.
(c) A is true but R is false.
Q.3. Assertion : A geneticist crossed two plants and got 50% tall and 50% dwarf progenies.
Reason: This cross follows Mendelian law as one of the parent plant might be heterozygous.
(b) Both A and R are true but R is not the correct explanation of A.
Q.4. Assertion : A tall plant which always produces tall offsprings is considered heterozygous for height and is represented by genotype (Tt).
Reason: A tall plant which always produces tall offspring is homozygous dominant and will always produce only one type of gamete (T).
(d) Assertion is false but reason is true
Q.5. Assertion : Selfing of a plant for several generations helps plant breeders to obtain pure breeding varieties.
Reason: Pure breeding plants are heterozygous for many traits.
(c) A is true but R is false.
Q.6. Assertion(A): A geneticist crossed two pea plants and got 50% tall and 50% dwarf in the progeny.
Reason (R) : One plant was heterozygous tall and the other was dwarf.
(a) Both A and R are true and R is the correct explanation of A.
Q.7. Assertion(A) : Variations are seen in offspring produced by sexual reproduction.
Reason (R) : DNA molecule generated by replication is not exactly identical to original DNA.
(a) Both A and R are true and R is the correct explanation of A.
Q.8. Assertion(A): The sex of a child is determined by the mother.
Reason (R) : Humans have two types of sex chromosomes: XX and XY.
(d) Assertion is false but reason is true
Q.9. Assertion(A) : Evolution is an extremely slow process.
Reason (R) : New characters are accumulated in an organism during its lifetime.
(c) A is true but R is false.
Q.10. Assertion : Pea plant is considered ideal for hybridisation experiments.
Reason: Pea is self pollinating plant with short life cycle and bears visible contrasting traits.
(a) Both A and R are true and R is the correct explanation of A.
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By Team of CBSE Expert