Biology Mock Test

Question 1
5 / -1

What are the animals that lay eggs called?

A
Rrhizome animal

B
Geriatric animal

C
Oviparous animal

D
Reproductive creatures

Question 2
5 / -1

Asexual reproduction differs from sexual reproduction in that in asexual reproduction _______.

A
The nuclei of gametes fuse

B
The gametes are produced in reproduction

C
The offspring shows variations

D
The new organisms are genetically identical to the parent

Question 3
5 / -1

Which of the following structure represents the Female gametophyte of angiosperms?

A
Nucellus

B
Integuments

C
Embryo sac

D
Ovule

Question 4
5 / -1

Pollination by water takes place in

A
Vallisneria

B
Zostera

C
Hydrilla

D
All of these

Question 5
5 / -1

The undifferentiated sheath which encloses root cap in a monocot seed is termed as:

A
Coleoptiles

B
Coleorhizae

C
Calyptrogens

D
Calyptras

Question 6
5 / -1

Which one of the following is a false fruit?

A
Watermelon

B
Cherry

C
Apple

D
Lemon

Question 7
5 / -1

What is the secretory phase in the human menstrual cycle also called? How long does it last?

A
Luteal phase, four

B
Follicular phase, four

C
Follicular phase, fourteen

D
Luteal phase, fourteen

Question 8
5 / -1

Which of the following hormones is not secreted by human placenta?

A
HCG

B
Estrogens

C
Progestrone

D
L.H

Question 9
5 / -1

The testis, male gonad, is located inside the scrotum in order to keep testicular temperature :

A
Higher than body temperature

B
Normal as body temperature

C
Lower than body temperature

D
Depending on environmental changes

Question 10
5 / -1

Choose the correct sequence of embryonic development in humans:

A
Fertilization → Zygote → Morula → Cleavage → Blastocyst

B
Fertilization → Zygote → Cleavage → Morula → Blastocyst

C
Fertilization → Cleavage → Zygote → Morula → Blastocyst

D
Fertilization → Zygote → Cleavage → Blastocyst → Morula

Question 11
5 / -1

How is Copper-T used as a contraceptive?

A
As a surgical tool for a simple quick reversible surgery

B
As an oral pill to disrupt normal hormonal cycle in women

C
Inside the uterus of a woman to block the fallopian tubes

D
As a reusable barrier to be used during intercourse

Question 12
5 / -1

Which of the following ART methods is required after (IVF)?

A
GIFT

B
ZIFT

C
IUD

D
ICSI

Question 13
5 / -1

When Mendel crossed a tall pea plant with a short pea plant, only tall plants were produced. Of these progeny F1 plants, ______ had dissimilar factors or alleles that determine the height of the pea plant.

A
Two out of four (50%)

B
Three out of four (75%)

C
All (100%)

D
One out of four (25%)

Question 14
5 / -1

'A geneticist is studying the simultaneous inheritance of two factors (or traits) represented by the two letters A and B. In the cross of AABB × aabb, it will be seen that ______'.

A
the results depend on whether the factors A and B lie on the same chromosome

B
we will note that it is experimentally not possible to conduct such a complicated experiment

C
the inheritance of one factor (A) will affect the inheritance of the other factor (B)

D
a simple mathematical formula (9 : 3 : 3 : 1) can be derived to predict the outcomes

Question 15
5 / -1

Sex determination in human beings is based on _____ method.

A
XO

B
XX

C
XX - XY

D
ZW

Question 16
5 / -1

Trisomy 21 is known as -

A
Evans syndrome

B
Edwards syndrome

C
Down syndrome

D
Vayam Rakshamah

Question 17
5 / -1

Haemophilia is a genetic disorder which leads to ________.

A
Decrease in haemoglobin level

B
Rheumatic heart disease

C
Decrease in WBC

D
Non-clotting of blood

Question 18
5 / -1

In which year did James Watson and Francis Crick discovered the double-helix structure of Deoxyribonucleic acid (DNA)?

A
1949

B
1960

C
1955

D
1953

Question 19
5 / -1

After transcription, the DNA molecule

A
disintegrates

B
moves into cytoplasm

C
replicates itself

D
reassociates to form its original structure

Question 20
5 / -1

Which one of the following statements is correct while explaining eukaryotic DNA replication ?

A
It has a single origin of DNA replication

B
DNA replication takes place during only one phase of the cell cycle.

C
Origin Recognition Complex is not well defined

D
Telomerase action is not seen

Question 21
5 / -1

Name the genes that are involved in turning off or on, the transcription of a set of genes.

A
Regulatory genes

B
Operator genes

C
Exons

D
Introns

Question 22
5 / -1

The basis of DNA finger printing is

A
The double helix

B
Errors in base sequence

C
DNA replication

D
DNA Polymorphism

Question 23
5 / -1

The theory of evolution of species by natural selection was given by ____.

A
Jagdish Chandra Bose

B
Mendel

C
Morgan

D
Darwin

Question 24
5 / -1

Miller conducted an experiment by creating early Earth climatic conditions in the laboratory. What were the first organic molecules that he observed to be formed?

A
Amino acids

B
Sugars

C
Nitrogenous bases

D
Fats

Question 25
5 / -1

Consider the following statements about HARDY-WEINBERG PRINCIPLE and mark the correct option.
1. In a given population one can find out the frequency of occurrence of alleles of a gene or a locus.
2. This frequency is supposed to remain fixed and even remain the same through the generations.

A
1 only

B
2 only

C
Both 1 and 2

D
Neither 1 nor 2

Question 26
5 / -1

Thorns of Bougainvillea and tendrils of Cucurbita are examples of

A
Analogous structures

B
Homologous structures

C
Vestigial structures

D
Convergent evolution

Question 27
5 / -1

Diseases like dysentery and malaria are caused by _____.

A
Viruses

B
Bacteria

C
Protozoa

D
Fungi

Question 28
5 / -1

Widal test is performed for

A
Typhoid fever

B
AIDS

C
Polio

D
Cholera

Question 29
5 / -1

If thymus gland is removed from the new-born baby, the cells which will not form are

A
Monocytes

B
B-Lymphocytes

C
T-Lymphocytes

D
Eosinophils

Question 30
5 / -1

Mule is a hybrid derived by crossing-

A
Female donkey and a male horse

B
Donkey and zebra

C
Horse and zebra

D
Male donkey and a female horse

Question 31
5 / -1

“Blue Revolution” is related to –

A
Space research

B
Drinking water

C
Poultry

D
Fishing

Question 32
5 / -1

Consider the following statements:
1. Algae
2. Bacteria
3. Fungi
Which of the above can be used in industrial processes?

A
1 and 2 only

B
2 only

C
1 and 3 only

D
1, 2 and 3

Question 33
5 / -1

Gas released in the fermentation by microbes in making dosa and other food items is _______

A
Oxygen

B
Carbon dioxide

C
Nitrogen

D
Ammonia

Question 34
5 / -1

Which microorganism is Penicillin obtained from?

A
Amoeba

B
Virus

C
Protozoa

D
Fungi

Question 35
5 / -1

Which is correct match of phenomenon and its explanation

A
Central dogma-RNA -DNA Protein -RNA

B
Reverse transcription-PCR-Many copies of DNA sequence

C
Transcription-Formation of RNA and proteins

D
RNA silencing-Use of dsRNA

Question 36
5 / -1

An antibiotic resistance gene in a vector usually helps in the selection of

A
Competent bacterial cells

B
Transformed bacterial cells

C
Recombinant bacterial cells

D
None of the above

Question 37
5 / -1

Read the assertion and reason carefully to mark the correct option out of the options given below:
Assertion: Plasmids are single stranded extrachromosomal DNA.
Reason: Plasmids are found in Eukaryotic cells.

A
If both the assertion and the reason are true and the reason is a correct explanation of the assertion

B
If both the assertion and reason are true but the reason is not a correct explanation of the assertion

C
If the assertion is true but the reason is false

D
If both the assertion and reason are false

Question 38
5 / -1

Which of the following is not required in the preparation of a recombinant DNA molecule

A
Restriction endonuclease

B
DNA ligase

C
DNA fragments

D
E.coli

Question 39
5 / -1

Bt cotton is not

A
A GM plant

B
Insect resistant

C
A bacterial gene expressing system

D
Resistant to all pesticides

Question 40
5 / -1

The prerequisites for biotechnological production of antibiotics is

A
To search an antibiotic producing microorganism

B
To isolate the antibiotic gene

C
To join antibiotic gene with E. coli plasmid

D
All of the above

Question 41
5 / -1

Match the following:
1 Regulate A Maintain homeostasis
2 Conform B Diapause
3 Migrate C Do not maintain a constant internal environment
4 Suspend D Move away temporarily

A
1(A), 2(C), 3(D), 4(B)

B
1(A), 2(C), 3(B), 4(D)

C
1(C), 2(A), 3(B), 4(D)

D
1(C), 2(A), 3(D), 4(B)

Question 42
5 / -1

What type of human population is represented by the following pyramid?

A
Expanding population

B
Vanishing population

C
Stable population

D
Declining population

Question 43
5 / -1

When both species are affected negatively, the nature of the interaction is

A
Commensalism

B
Predation

C
Competition

D
Amensalism

1	Regulate	A	Maintain homeostasis
2	Conform	B	Diapause
3	Migrate	C	Do not maintain a constant internal environment
4	Suspend	D	Move away temporarily

Question 44

5 / -1

Match the column-I with column-II

	Column-I		Column-II
A.	Saprophyte	1.	Symbiotic association of fungi with plant roots
B.	Parasite	2.	Decomposition of dead organic materials
C.	Lichens	3.	Living on living plants or animals
D.	Mycorrhiza	4.	Symbiotic association of algae and fungi

Choose the correct answer from the options

A - 2, B - 3, C - 4, D - 1

A - 3, B - 2, C - 1, D - 4

A - 1, B - 2, C - 3, D - 4

A - 2, B - 1, C - 3, D - 4

Question 45
5 / -1

In lake ecosystem, pyramid of biomass is

A
Upright

B
Inverted

C
Anything is possible

D
None is correct

Question 46
5 / -1

Which is the correct sequence in the food chain in a grassland

A
Grass → wolf → insect → Buffalo

B
Bacteria → grass → rabbit →wolf

C
Grass → insect → snakes → birds

D
Grass → snake → insect → deer

Question 47
5 / -1

Biodiversity describes the study of diversity at

A
Below species level

B
Species level

C
Community level

D
All levels of biological organization

Question 48
5 / -1

The source book which keeps a record of all the endangered animals and plants is

A
Green Data Book

B
Red Data Book

C
Blue Data book

D
White Data book

Question 49
5 / -1

Given below are two statements:
Statements I : Sewage discharge in a flowing river causes a decrease in biochemical oxygen demand (BOD) due to biodegradation of organic matter by microbes. This leads to the mortality of fish and other aquatic creatures.
Statements II : Sewage discharge in a flowing river causes a sharp increase in dissolved oxygen (DO) downstream from point of discharge due to increased consumption of DO by microbes. This leads to the mortality of fish and other aquatic creatures.
In light of the above statements, choose the most appropriate answer from the options given below

A
Both Statement I and Statement II are correct

B
Both Statement I and Statement II are incorrect

C
Statement I is correct but Statement II is incorrect

D
Statement I is incorrect but Statement II is correct

Question 50
5 / -1

Which of the following class belongs to a non-biodegradable commodity?

A
Grass, Flower and Fruit

B
Grass, Wood and Plastic

C
Fruits, Vegetables and Cakes

D
Grass, Vegetables and Wood

Submit Test

Biology Mock Te...

Question 1

Rrhizome animal

Geriatric animal

Oviparous animal

Reproductive creatures

Question 2

The nuclei of gametes fuse

The gametes are produced in reproduction

The offspring shows variations

The new organisms are genetically identical to the parent

Question 3

Nucellus

Integuments

Embryo sac

Ovule

Question 4

Vallisneria

Zostera

Hydrilla

All of these

Question 5

Coleoptiles

Coleorhizae

Calyptrogens

Calyptras

Question 6

Watermelon

Cherry

Apple

Lemon

Question 7

Luteal phase, four

Follicular phase, four

Follicular phase, fourteen

Luteal phase, fourteen

Question 8

HCG

Estrogens

Progestrone

L.H

Question 9

Higher than body temperature

Normal as body temperature

Lower than body temperature

Depending on environmental changes

Question 10

Fertilization → Zygote → Morula → Cleavage → Blastocyst

Fertilization → Zygote → Cleavage → Morula → Blastocyst

Fertilization → Cleavage → Zygote → Morula → Blastocyst

Fertilization → Zygote → Cleavage → Blastocyst → Morula

Question 11

As a surgical tool for a simple quick reversible surgery

As an oral pill to disrupt normal hormonal cycle in women

Inside the uterus of a woman to block the fallopian tubes

As a reusable barrier to be used during intercourse

Question 12

GIFT

ZIFT

IUD

ICSI

Question 13

Two out of four (50%)

Three out of four (75%)

All (100%)

One out of four (25%)

Question 14

the results depend on whether the factors A and B lie on the same chromosome

we will note that it is experimentally not possible to conduct such a complicated experiment

the inheritance of one factor (A) will affect the inheritance of the other factor (B)

a simple mathematical formula (9 : 3 : 3 : 1) can be derived to predict the outcomes

Question 15

XO

XX

XX - XY

ZW

Question 16

Evans syndrome

Edwards syndrome

Down syndrome