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Question (21)

QN008679

Which observation best supports the idea of gradual biological change?

(A) Fossils from different ages showing structural differences
(B) Fossils found only in one place
(C) Rocks without fossils
(D) Identical fossils in every layer

Correct Answer: A

Explanation:

Fossils from different geological periods showing structural differences indicate gradual biological change over time.

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Question (22)

QN008680

A fossil is estimated to be 50 million years older than another fossil dated at 30 million years. What is the age of the older fossil?

(A) 20 million years
(B) 50 million years
(C) 80 million years
(D) 100 million years

Correct Answer: C

Explanation:

Older fossil age = 30 + 50 = 80 million years.

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Question (23)

QN008681

Which fossil would most likely belong to the youngest rock layer?

(A) Fossil in the deepest layer
(B) Fossil in the topmost layer
(C) Fossil in the middle layer
(D) All are equally young

Correct Answer: B

Explanation:

In undisturbed rock layers, the topmost layer is the youngest.

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Question (24)

QN008682

Fossils are important in science because they help establish

(A) The sequence of life through geological time
(B) Future weather forecasts
(C) Exact modern population counts
(D) Agricultural productivity

Correct Answer: A

Explanation:

Fossils help scientists understand the order and development of life through Earth's history.

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Question (25)

QN008683

If Fossil P is 90 million years old and Fossil Q is 140 million years old, the age difference is

(A) 30 million years
(B) 40 million years
(C) 50 million years
(D) 60 million years

Correct Answer: C

Explanation:

Age difference = 140 − 90 = 50 million years.

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Question (26)

QN008684

Which type of fossil directly preserves part of an organism’s body?

(A) Body fossil
(B) Trace fossil
(C) Behavioural fossil
(D) Geological fossil

Correct Answer: A

Explanation:

Body fossils preserve actual remains such as bones, teeth, or shells.

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Question (27)

QN008685

A series of fossils showing changes in a group over millions of years provides evidence for

(A) Evolutionary trends
(B) Instant creation
(C) Uniform populations
(D) Absence of variation

Correct Answer: A

Explanation:

Gradual changes in fossil records demonstrate evolutionary trends over time.

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Question (28)

QN008686

Fossils found in successive rock layers can help scientists determine

(A) Relative ages of organisms
(B) Internet connectivity
(C) Current temperatures only
(D) Mineral prices

Correct Answer: A

Explanation:

Fossils in different layers help establish the relative ages of organisms.

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Question (29)

QN008687

Which fossil evidence would best indicate the existence of an extinct species?

(A) Fossil remains with no living equivalent
(B) Modern photographs
(C) Weather records
(D) Soil samples alone

Correct Answer: A

Explanation:

Fossils of organisms with no living counterparts indicate extinct species.

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Question (30)

QN008688

A fossil discovered in a 250-million-year-old rock layer cannot reasonably be younger than

(A) 250 million years
(B) 200 million years
(C) 150 million years
(D) 100 million years

Correct Answer: A

Explanation:

A fossil cannot be younger than the rock layer in which it is found.

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Question (21)

Which observation best supports the idea of gradual biological change?

Explanation:

Link:

Question (22)

A fossil is estimated to be 50 million years older than another fossil dated at 30 million years. What is the age of the older fossil?

Explanation:

Link:

Question (23)

Which fossil would most likely belong to the youngest rock layer?

Explanation:

Link:

Question (24)

Fossils are important in science because they help establish

Explanation:

Link:

Question (25)

If Fossil P is 90 million years old and Fossil Q is 140 million years old, the age difference is

Explanation:

Link:

Question (26)

Which type of fossil directly preserves part of an organism’s body?

Explanation:

Link:

Question (27)

A series of fossils showing changes in a group over millions of years provides evidence for

Explanation:

Link:

Question (28)

Fossils found in successive rock layers can help scientists determine

Explanation:

Link:

Question (29)

Which fossil evidence would best indicate the existence of an extinct species?

Explanation:

Link:

Question (30)

A fossil discovered in a 250-million-year-old rock layer cannot reasonably be younger than

Explanation:

Link:

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