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Class 10 Science Chapter 8 Assertion and Reason Questions - Heredity and Evolution

Q1:

Question for Assertion & Reason Type Questions: Heredity and Evolution
Try yourself: Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:

Assertion: A geneticist crossed a pea plant having violet flowers with a pea plant having white flowers, he got all violet flowers in the first generation.

Reason: White colour gene is not passed on to the next generation.

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Q2:

Question for Assertion & Reason Type Questions: Heredity and Evolution
Try yourself: Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:

Assertion (A): Learning a skill such as dance and music is an acquired trait.

Reason (R): Acquired traits develop in the lifetime of an individual and do not pass to the progeny.

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Q3:

Question for Assertion & Reason Type Questions: Heredity and Evolution
Try yourself: Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:

Assertion (A): Mendel chose a number of varieties of garden pea as plant material for his experiments.

Reason (R): Garden pea has well defined characters and is bisexual.

View Solution

Q4:

Question for Assertion & Reason Type Questions: Heredity and Evolution
Try yourself: Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:

Assertion (A): Traits like eye colour or height are inherited traits.

Reason (R): Inherited traits are not transferred from parents to young ones.

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Q5:

Question for Assertion & Reason Type Questions: Heredity and Evolution
Try yourself: Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:

Assertion (A): In humans, males play an important role in determining the sex of the child.

Reason (R): Males have two X chromosomes.

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Q6:

Question for Assertion & Reason Type Questions: Heredity and Evolution
Try yourself: Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:

Assertion (A): Wings of butterfly and wings of bat are analogous organs.

Reason (R): Analogous organs have different origin and structural plan but same function.

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Q7:

Question for Assertion & Reason Type Questions: Heredity and Evolution
Try yourself: Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:

Assertion (A): Fossils are remains of dead organisms.

Reason (R): It is helpful in the study of evolution.

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Q8:

Question for Assertion & Reason Type Questions: Heredity and Evolution
Try yourself: Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:

Assertion (A): Speciation is the process of formation of a new species from a pre-existing one.

Reason (R): Mutation plays a role in speciation.

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Q9:

Question for Assertion & Reason Type Questions: Heredity and Evolution
Try yourself: Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:

Assertion : Evolution is called organic evolution.

Reason : Evolution involves the living organisms.

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Q10:

Question for Assertion & Reason Type Questions: Heredity and Evolution
Try yourself: Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:

Assertion : Forelimbs o f vertebrates are homologous organs.

Reason : Analogous organs have the same origin but different functions.

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Q11:

Question for Assertion & Reason Type Questions: Heredity and Evolution
Try yourself: Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:

Assertion : Among the primates, chimpanzees are the closest relative of the present day humans.

Reason : The banding pattern in the autosome number 3 and 6 of man and chimpanzee is remarkably similar.

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Q12:

Question for Assertion & Reason Type Questions: Heredity and Evolution
Try yourself: Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:

Assertion : Speciation is the process of formation of a new species from a pre-existing one.

Reason : Mutation plays a role in speciation.

View Solution

Q13:

Question for Assertion & Reason Type Questions: Heredity and Evolution
Try yourself:Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:

Assertion : Changes in non-reproductive tissues can be passed on the DNA of the germ cells.

Reason : Inherited traits include the traits developed during the lifetime of an individual that cannot be passed on to its propeny.

View Solution

Q14:

Question for Assertion & Reason Type Questions: Heredity and Evolution
Try yourself: Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:

Assertion : Mendel chose a number of varieties of garden pea as plant material for his experiments.

Reason : Garden pea has well defined characters and was bisexual.

View Solution

Q15:

Question for Assertion & Reason Type Questions: Heredity and Evolution
Try yourself:Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:

Assertion : The establishment of reproductive isolations in an event of biological significance.

Reason : In the absence of reproductive isolation species can merge into a single population.

View Solution

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