CUET Biology Question Paper 2025 PDF: Download Here (Latest)

Exam Detail

Information

Exam Mode

Online

Total Questions

50 questions

Time Duration

60 minutes

Maximum Marks

200 marks total

Correct Answer

+5 marks

Wrong Answer

-1 mark negative marking

No.

Topics

1

Reproduction

2

Genetics & evolution

3

Biology and Human Welfare

4

Biotechnology and Its Application

5

Ecology and Environment

Section:

BIOLOGY

Item No:

1

Question Type:

MCQ

Question:

Select the statements that are CORRECT regarding patterns of biodiversity.

(A) Species diversity increases as we move away from the equator towards the poles

(B) The tropical Amazon rain forest in South America has the most incredible biodiversity on earth.

(C) There is more solar energy available in the temperate region than in the tropics.

(D) Tropical environments are less seasonal, relatively more constant and predictable

(E) A. Humboldt observed that within a region, species richness decreases with increasing explored area, up to a limit.

Choose the correct answer from the options given below :

(1) (A) and (E) only

(2) (B) and (C) only

(3) (B) and (D) only

(4) (C), (D) and (E) only

A:

1

B:

2

C:

3

D:

4

Correct Answer

(3) (B) and (D) only

Explanation

(B) is correct because the Amazon rainforest in South America is known for having the most incredible biodiversity on Earth due to its variety of species and ecosystems.

(D) is correct because tropical environments are indeed less seasonal, with conditions being relatively constant and predictable throughout the year.

Section:

BIOLOGY

Item No:

2

Question Type:

MCQ

Question:

Flowers are a fascinating organ of Angiosperms. Flowers are considered the object of aesthetic, ornamental, social and cultural value. Biologically flower is a

(1) Modified root

(2) Modified shoot

(3) Modified leaf

(4) Modified tuber

A:

1

B:

2

C:

3

D:

4

Correct Answer

(2) Modified shoot.

Explanation

Biologically, a flower is a modified shoot because it is derived from the shoot apex and consists of modified leaves. The flower is specialised for reproduction in angiosperms, with various parts such as petals, sepals, stamens, and pistils, which are modified forms of leaves.

Section:

BIOLOGY

ItemNo:

3

QuestionType:

MCQ

Question:

Which of the following hormones is not produced by the placenta?

(1) hCG

(2) hPL

(3) estrogen

(4) androgens

A:

1

B:

2

C:

3

D:

4

Correct Answer

(4) Androgens.

Explanation

The placenta produces hormones such as hCG (human chorionic gonadotropin), hPL (human placental lactogen), and estrogen, which play a crucial role in supporting pregnancy. However, androgens (like testosterone) are not produced by the placenta. Instead, androgens are typically made by the gonads (testes in males and ovaries in females) and adrenal glands.

Section:

BIOLOGY

ItemNo:

4

QuestionType:

MCQ

Question:

Individuals with a karyotype of 44+{XXY} having overall masculine development with feminine development, like Gynaecomastia, have a chromosomal disorder.

(1) Klinefelter's Syndrome

(2) Turner's Syndrome

(3) Down's Syndrome

(4) Acquired Immuno Deficiency Syndrome

A:

1

B:

2

C:

3

D:

4

Correct Answer

(1) Klinefelter's Syndrome.

Explanation

Individuals with a karyotype of 44+XXY have Klinefelter's Syndrome, a chromosomal disorder characterised by males having an extra X chromosome. This condition often results in masculine physical characteristics, but with some feminine traits like gynecomastia (development of breast tissue in males), reduced fertility, and other developmental abnormalities.

Section:

BIOLOGY

ItemNo:

7

QuestionType:

MCQ

Question:

Which of the following options determines the percolation and water holding capacity of soils?

(1) Climate

(2) Grain size, soil composition and aggregation

(3) Weathering process

(4) Soil development

A:

1

B:

2

C:

3

D.

4

Correct Answer

(2) Grain size, soil composition and aggregation.

Explanation

The percolation and water-holding capacity of soils are primarily determined by factors such as grain size, soil composition, and aggregation. Larger grain sizes (such as sand) allow water to percolate more easily, while finer particles (like clay) have a higher water-holding capacity. Soil composition and aggregation also influence the ease with which water moves through the soil and the amount of water the soil can retain.

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CUET 2024 Biology Question Paper (Set A)

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CUET 2024 Biology Question Paper (Set B)

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CUET 2024 Biology Question Paper (Set C)

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CUET 2024 Biology Question Paper (Set D)

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CUET 2022 Biology Question Paper

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Title

Link

REPRODUCTION

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GENETICS AND EVOLUTION

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BIOLOGY AND HUMAN WELFARE

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BIOTECHNOLOGY AND ITS APPLICATIONS

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ECOLOGY AND ENVIRONMENT

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CUET 2024 Biology Exam Analysis

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