biology MCQs - 11th class Chapter 01 Mcqs

1

What is the literal meaning of biology?

A

Study of animals

B

Study of plants

C

Study of life

D

Study of nature

2

Which branch of biology deals with the study of fossils?

A

Histology

B

Palaeontology

C

Genetics

D

Physiology

3

The study of organisms in relation to their environment is called?

A

Ecology

B

Social Biology

C

Environmental Biology

D

Marine Biology

4

Biotechnology deals with the use of living organisms in which industries?

A

Manufacturing and service

B

Construction and transport

C

Education and research

D

Only agriculture

5

Out of 92 naturally occurring elements, how many are commonly used to form living organisms?

A

6

B

10

C

16

D

92

6

Which six bio-elements account for 99% of the total mass in the human body?

A

Oxygen, Carbon, Hydrogen, Nitrogen, Calcium, Phosphorus

B

Oxygen, Iron, Sodium, Chlorine, Carbon, Hydrogen

C

Nitrogen, Sulphur, Potassium, Magnesium, Oxygen, Carbon

D

Carbon, Hydrogen, Iron, Zinc, Copper, Iodine

7

What percentage of the human body mass is composed of Oxygen?

A

18%

B

10%

C

3%

D

65%

8

What percentage of the human body mass is composed of Carbon?

A

18%

B

65%

C

10%

D

2%

9

A structure within a cell that performs a specific function is known as a/an?

A

Tissue

B

Organ

C

Molecule

D

Organelle

10

A group of similar cells organized into loose sheets or bundles performing similar functions is called?

A

Organ

B

Organ System

C

Tissue

D

Organism

11

The stomach, which is composed of several tissue types, is an example of a/an?

A

Organ System

B

Organ

C

Tissue

D

Cell

12

A group of living organisms of the same species located in the same place at the same time is a?

A

Community

B

Ecosystem

C

Population

D

Biome

13

A large regional community primarily determined by climate is called a?

A

Population

B

Biome

C

Ecosystem

D

Biosphere

14

According to the fossil record, when did the first living organisms appear?

A

About 70 M years ago

B

About 225 M years ago

C

About 600 M years ago

D

About 3000 M years ago

15

More than half of all known species of organisms (53.1%) are?

A

Vascular plants

B

Fungi

C

Insects

D

Animals other than insects

16

A tentative explanation of observations is called a?

A

Theory

B

Law

C

Hypothesis

D

Deduction

17

Deductive reasoning moves from the?

A

Specific to the general

B

General to the specific

C

Known to the unknown

D

Simple to the complex

18

Inductive reasoning is used to generalize from what?

A

General principles

B

Established theories

C

Specific events

D

Philosophical ideas

19

A scientific theory that is uniform, constant, and virtually irrefutable is known as a?

A

Hypothesis

B

Productive theory

C

Scientific law

D

General principle

20

Who developed the technique of pasteurization for preserving milk and milk products?

A

Edward Jenner

B

Louis Pasteur

C

Robert Hooke

D

Gregor Mendel

21

In what year did Edward Jenner first develop the technique of vaccination?

A

1796

B

1897

C

1953

D

1997

22

The word 'vacca', from which 'vaccination' is derived, is Latin for?

A

Pox

B

Disease

C

Cow

D

Immunity

23

The technique to repair defective genes by inserting a normal gene into bone marrow cells is called?

A

Cloning

B

Gene therapy

C

Radiotherapy

D

Chemotherapy

24

In 1997, scientists in Scotland successfully cloned which animal?

A

Cow

B

Mouse

C

Sheep

D

Horse

25

The removal or degradation of environmental pollutants by living organisms is called?

A

Bioabsorption

B

Bioremediation

C

Biocontrol

D

Bioaccumulation

26

Which branch of biology deals with the structure of organisms at the molecular level?

A

Genetics

B

Molecular Biology

C

Physiology

D

Anatomy

27

The study of microorganisms such as Bacteria, Viruses, and Protozoa is known as?

A

Parasitology

B

Microbiology

C

Zoogeography

D

Histology

28

What is the study of life in seas and oceans called?

A

Freshwater Biology

B

Marine Biology

C

Environmental Biology

D

Ecology

29

The branch of biology dealing with the study of parasites is?

A

Parasitology

B

Social Biology

C

Human Biology

D

Embryology

30

Which of the following is considered a macromolecule?

A

Water (H2O)

B

Carbon Dioxide (CO2)

C

Glucose

D

Starch

31

In animals, long-term regulation of activities is brought about by hormones from the?

A

Nervous system

B

Circulatory system

C

Endocrine system

D

Digestive system

32

Populations of different species living in the same habitat form a?

A

Population

B

Organism

C

Community

D

Biome

33

Predation, parasitism, and mutualism are examples of interactions between?

A

Tissues

B

Organs

C

Organisms

D

Cells

34

How many total species of organisms are estimated to exist?

A

2.5 million

B

5 to 30 million

C

1 million

D

50 million

35

Quantitative observations are considered more accurate because they are?

A

Based on five senses

B

Descriptive

C

Measurable

D

Based on background knowledge

36

An 'if...then' logic is frequently used in which type of reasoning?

A

Inductive reasoning

B

Deductive reasoning

C

Intuitive reasoning

D

Analogical reasoning

37

What technique is used to create genetically identical copies of organisms or cells through asexual reproduction?

A

Genetic engineering

B

Tissue culture

C

Cloning

D

Selective breeding

38

The hydroponic culture technique is used to test nutrient requirements by growing plants in?

A

Soil

B

Sand

C

Aerated water with mineral salts

D

Sterile compost

39

AIDS is caused by which virus?

A

Hepatitis Virus

B

Influenza Virus

C

HIV

D

Polio Virus

40

Radiotherapy is a treatment for cancer that uses?

A

Anticancer chemicals

B

Short wave radiations

C

Antibiotics

D

Normal genes

41

What is defined as a cell or individual and all its asexually produced offspring?

A

A species

B

A population

C

A clone

D

A family

42

Heavy metals like lead from automobiles are examples of?

A

Bioremediation agents

B

Bio-pesticides

C

Nutrient mineral salts

D

Environmental pollutants

43

The study of heredity is called?

A

Evolution

B

Genetics

C

Ecology

D

Physiology

44

Which level of organization is defined as 'the unit of life'?

A

Atom

B

Molecule

C

Cell

D

Tissue

45

Two or more organs working together for a specific body function form a/an?

A

Tissue

B

Organism

C

Organ System

D

Community

46

The study of tissues is known as?

A

Histology

B

Anatomy

C

Morphology

D

Cytology

47

The Paleozoic era is known for the age of?

A

Reptiles

B

Mammals

C

Amphibia

D

Insects

48

Which plants can be propagated by cloning using tissue culture techniques?

A

All plants

B

Only fungal plants

C

Transgenic plants

D

Only crop plants

49

What is the approach called that uses all relevant methods to control a disastrous disease?

A

Biological Control

B

Integrated Disease Management

C

Genetic Engineering

D

Preventive Measures

50

The process that creates identical twins is a type of?

A

Sexual reproduction

B

Cloning

C

Fertilization

D

Mutation