ICSE Class 10 Biology by Pavan | Practice Test to Test Your Knowledge
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ICSE Class 10 Biology

ICSE Class 10 Biology

Detailed mock test on Life Processes, Reproduction, and Heredity. Features diagram-based questions and application problems.

2025-07-19
Pavan Pavan
ICSE Class 10 BIology Grade 10

Duration

30 min

Questions

30

Marking

Negative

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Questions Preview

Which phase of the cell cycle involves the division of the nucleus?

A
Interphase
B
Prophase
C
Metaphase
D
Mitosis

Which phase of the cell cycle is characterized by cell growth and DNA replication?

A
G1 phase
B
S phase
C
G2 phase
D
M phase

During which stage of mitosis do the chromosomes align at the equator of the cell?

A
Prophase
B
Metaphase
C
Anaphase
D
Telophase

Which of the following is true about the cell cycle?

A
The cell cycle includes mitosis only
B
The cell cycle includes interphase and mitosis
C
The cell cycle includes only interphase
D
The cell cycle includes meiosis and cytokinesis

During which phase of the cell cycle does DNA replicate?

A
G1 phase
B
S phase
C
G2 phase
D
M phase

Which structure is responsible for carrying out mitosis in eukaryotic cells?

A
Nucleus
B
Cytoplasm
C
Ribosomes
D
Mitochondria

What is the result of the process of mitosis?

A
One diploid daughter cell
B
Two diploid daughter cells
C
Two haploid daughter cells
D
Four haploid daughter cells

In which phase of meiosis does crossing over occur?

A
Prophase I
B
Metaphase I
C
Anaphase I
D
Telophase II

What is the basic unit of heredity?

A
Gene
B
Chromosome
C
Nucleus
D
DNA

What is a chromosome made up of?

A
DNA and proteins
B
RNA and proteins
C
RNA and lipids
D
DNA and lipids

What is the shape of a chromosome?

A
Circular
B
Linear
C
Straight
D
Cylindrical

What is the centromere of a chromosome?

A
The region where the two chromatids are joined
B
The region where the DNA is located
C
The region where the spindle fibers attach
D
The region where the nucleolus is located

Who is known as the father of modern genetics?

A
Charles Darwin
B
Gregor Mendel
C
James Watson
D
Francis Crick

What is the law of dominance?

A
Recessive traits are always expressed
B
Dominant traits are always expressed
C
Dominant traits are not expressed
D
Traits are inherited independently

Which of the following is a phenotype?

A
Genetic makeup of an organism
B
Physical appearance of an organism
C
Alleles present in an organism
D
Chromosomes of an organism

What is the genotype of a person with blood type AB?

A
AA
B
AB
C
AO
D
OO

Which disease is an example of a sex-linked genetic disorder?

A
Sickle cell anemia
B
Down syndrome
C
Hemophilia
D
Cystic fibrosis

Which of the following is a characteristic of sex-linked inheritance?

A
The trait is carried by both males and females equally
B
The trait is more commonly expressed in males
C
The trait is more commonly expressed in females
D
The trait is not inherited

Which chromosome is responsible for determining the sex of a human?

A
X chromosome
B
Y chromosome
C
Autosomes
D
Both X and Y chromosomes

What is the expected phenotypic ratio for a monohybrid cross of two heterozygous parents?

A
3:1
B
1:2:1
C
1:1
D
2:2

Which of the following is true about Mendel's second law (Law of Independent Assortment)?

A
Alleles for different traits are inherited together
B
Alleles for different traits assort independently of each other
C
Only one allele of each pair is inherited
D
Traits are inherited in pairs

What is the term for an organism that has two identical alleles for a gene?

A
Heterozygous
B
Homozygous
C
Hybrid
D
Purebred

Which of the following is a recessive trait?

A
Brown eyes
B
Blue eyes
C
Widow's peak
D
Curly hair

In a cross between a male with color blindness (XcY) and a female with normal vision (XX), what is the probability of their male offspring being color blind?

A
100%
B
50%
C
25%
D
0%

What type of inheritance does hemophilia follow?

A
Autosomal recessive inheritance
B
Autosomal dominant inheritance
C
Sex-linked recessive inheritance
D
Sex-linked dominant inheritance

In a dihybrid cross, how many possible genotypes can be obtained if both parents are heterozygous for both traits?

A
4
B
16
C
9
D
8

What is the expected phenotypic ratio in a monohybrid cross for two heterozygous parents?

A
3:1
B
1:1
C
2:2
D
1:2:1

What is the genotype of a carrier female for hemophilia?

A
XcXc
B
XcX
C
XcY
D
XX

What is the probability of a male offspring inheriting an X-linked recessive trait from his father?

A
0%
B
25%
C
50%
D
100%

What is the probability of a female offspring inheriting an X-linked recessive trait from her mother?

A
0%
B
50%
C
25%
D
100%