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Question (1)

QN0036172

1 What is the main subject studied in the chapter Heredity?

(A) Digestion and respiration
(B) Mechanism by which variations are created and inherited
(C) Movement of organisms
(D) Production of hormones

Correct Answer: B

Explanation:

Heredity deals with how traits and variations are created and inherited across generations.

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Question (2)

QN0036173

2 Why do individuals of the same species often show differences from one another?

(A) They have no genetic material
(B) Variations can arise during reproduction
(C) They always have different body designs
(D) They cannot inherit traits

Correct Answer: B

Explanation:

Reproductive processes can produce variations among individuals.

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Question (3)

QN0036174

3 Which type of reproduction generally produces greater diversity?

(A) Asexual reproduction
(B) Sexual reproduction
(C) Binary fission only
(D) Vegetative reproduction only

Correct Answer: B

Explanation:

Sexual reproduction generates greater diversity because genetic material comes from two parents.

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Question (4)

QN0036175

4 In an asexually reproducing species, small differences may arise mainly because of

(A) inaccurate DNA copying
(B) different food habits
(C) different climates only
(D) absence of DNA

Correct Answer: A

Explanation:

Small inaccuracies during DNA copying can produce minor differences.

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Question (5)

QN0036176

5 If a variation helps an organism survive better in a particular environment, what may happen?

(A) The organism is less likely to survive
(B) The organism may have an advantage in survival
(C) The variation immediately disappears
(D) Reproduction stops

Correct Answer: B

Explanation:

Some variations provide advantages that increase the chances of survival.

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Question (6)

QN0036177

6 What do the rules of heredity determine?

(A) How traits are reliably inherited
(B) How food is digested
(C) How muscles contract
(D) How organisms breathe

Correct Answer: A

Explanation:

Heredity explains the inheritance of traits and characteristics from parents to offspring.

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Question (7)

QN0036178

7 A child has the basic features of a human being but does not look exactly like either parent. This illustrates

(A) only reproduction
(B) similarities along with variations
(C) absence of heredity
(D) identical inheritance

Correct Answer: B

Explanation:

Children inherit basic characteristics from parents but also show variations.

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Question (8)

QN0036179

8 In sexual reproduction, approximately how much genetic material does each parent contribute to the child?

(A) Almost equal amounts
(B) Only the mother contributes
(C) Only the father contributes
(D) No genetic material is contributed

Correct Answer: A

Explanation:

Both father and mother contribute practically equal amounts of genetic material.

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Question (9)

QN0036180

9 According to the chapter, each trait in a child can be influenced by

(A) paternal DNA only
(B) maternal DNA only
(C) both paternal and maternal DNA
(D) environmental factors only

Correct Answer: C

Explanation:

Both parents contribute genetic material that can influence a trait.

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Question (10)

QN0036181

10 Gregor Johann Mendel studied inheritance using

(A) fruit flies
(B) garden pea plants
(C) bacteria
(D) humans

Correct Answer: B

Explanation:

Mendel performed his important inheritance experiments using garden pea plants.

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Question (1)

1 What is the main subject studied in the chapter Heredity?

Explanation:

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Question (2)

2 Why do individuals of the same species often show differences from one another?

Explanation:

Link:

Question (3)

3 Which type of reproduction generally produces greater diversity?

Explanation:

Link:

Question (4)

4 In an asexually reproducing species, small differences may arise mainly because of

Explanation:

Link:

Question (5)

5 If a variation helps an organism survive better in a particular environment, what may happen?

Explanation:

Link:

Question (6)

6 What do the rules of heredity determine?

Explanation:

Link:

Question (7)

7 A child has the basic features of a human being but does not look exactly like either parent. This illustrates

Explanation:

Link:

Question (8)

8 In sexual reproduction, approximately how much genetic material does each parent contribute to the child?

Explanation:

Link:

Question (9)

9 According to the chapter, each trait in a child can be influenced by

Explanation:

Link:

Question (10)

10 Gregor Johann Mendel studied inheritance using

Explanation:

Link:

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