Free Biology MCQs Mock Test Online with Answers

Q1 : Which is a parasitic plant?

A: cuscuta B: rose C: ferns D: mosses

Q2 : Which of the following is an odd one?

A: Zoological parks B: Biosphere reserves C: National parks D: Wildlife sanctuaries

Q3 : Protein factory is___________?

A: nucleus B: ribosome C: golgi complex D: centriole

Q4 : Pigment present in red algae is_____________?

A: fucoxanthin B: phycocyanin C: phycoerythrin D: bilirubin

Q5 : In which approach do we protect and conserve the whole ecosystem to protect the endangered species?

A: Ex-situ conservation B: Off-site conservation C: No conservation D: In-situ conservation

Q6 : True roots absent in_____________?

A: ferns B: bryophytes C: gymnosperms D: angiosperms

Q7 : Animals that eat plants are called___________________?

A: Herbivores B: Consumer C: Carnivores D: Omnivores

Q8 : Animals fats are ______________ at room temperature?

A: Liquids B: Gases C: Solids D: None of these

Q9 : Chitin is a

A: Lipoprotein B: Polysaccharide C: Glycoprotein D: Phospholipid

Q10 : For what reason is the conservation of natural resources important?

A: Maintaining the ecological processes B: Disturbing the ecological balance C: Extinction of biological species D: Disruption of quality of the environment

Q11 : What are the agents that bring about such an undesirable change (pollution) are called?

A: Pollutants B: Haptens C: Adjuvants D: Vaccine

Q12 : The mechanism for ATP synthesis is_____________?

A: Chemosynthesis B: Photosynthesis C: Phosphorylation D: Chemiosmosis

Q13 : What is the number of national parks India consisting of?

A: 19 B: 90 C: 29 D: 120

Q14 : Which of the following is an odd one?

A: Corbett National Park B: Ghana Bird Sanctuary C: Western Ghats D: Andaman and Nicobar Islands

Q15 : The branch of science dealing with the classification of life forms is called: _____________?

A: Genetics B: Taxonomy C: Archeology D: Paleontology

Q16 : What is an undesired high level of sound called?

A: Air B: Music C: Noise D: Speakers

Q17 : How do urbanization and an increase in population affect biodiversity?

A: Making land more productive B: Loss of flora and fauna C: More growth of flora and fauna D: Increasing land’s agricultural capability

Q18 : A Bacteriophage consists solely of: __________?

A: DNA and Protein B: RNA and Protein C: RNA only D: Protein Only

Q19 : The Latin word of the name given to a human being Homo Sapiens, include the: __________?

A: Genus & Family B: Family & Order C: Genus & Class D: Genus & Species

Q20 : In animals coordination is achieved by means of?

A: Nervous system B: Endocrine system C: Respiratory system D: Both A and B

Q21 : What is the protection and conservation of species outside their natural habitat called?

A: No conservation B: Ex-situ conservation C: On-site conservation D: In-situ conservation

Q22 : What is the impact of air pollution on plants?

A: Infection in the lungs B: Irritation in eyes C: Reduce growth and yield of crops D: Deafening of ears

Q23 : What cell organelle assists in the oxidation of fatty acids along with peroxisomes?

A: Ribosome B: Nucleus C: Endoplasmic Reticulum D: Mitochondria

Q24 : Which of the following is an odd one?

A: Botanical gardens B: Zoological parks C: Wildlife safari parks D: National parks

Q25 : Viruses resemble living things because they: _____________?

A: Circulate B: Move C: Reproduce D: Are crystalline

Q26 : ________ is stored in animal cells.

A: starch B: cellulose C: sucrose D: glycogen

Q27 : What does CPCB stand for?

A: Central Particulate Control Board B: Central Panama Channel Board C: Central Pollution Control Board D: Central Pollution Channel Board

Q28 : Which one of the following is an example of conservation?

A: No use of natural resources B: The wise use of natural resources C: Excess use of natural resources D: Complete use of natural resources

Q29 : Conclusion of Mendels work latter became a_____________?

A: Scientific hypothesis B: Theory C: Scientific law D: Productive theory

Q30 : Which organelle is used in the production of white matter in the nervous system?

A: Mitochondria B: Peroxisomes C: Endoplasmic Reticulum D: Ribosomes

Q31 : Which disease can be controlled by vaccination?

A: Measles B: Cancer C: Diabetes D: Heart attack

Q32 : Enzyme present in the saliva is_____________?

A: lipase B: trypsin C: ptyalin D: invertase

Q33 : Which act was passed to protect and improve the quality of our environment?

A: The Mental Healthcare Act B: The Coal Mines Act C: The National Sports University Act D: Environment Protection Act

Q34 : What enzyme is used to detoxify alcohol in our body?

A: Catalase B: Peroxidase C: Urea – catalase D: Amylase

Q35 : When did the Government of India pass the Environment Protection Act?

A: 1990 B: 1986 C: 1896 D: 2000

Q36 : The heart is enclosed in a membrane called________?

A: pleura B: pericardium C: peritoneum D: epithelium

Q37 : Nutrition in fungi is___________?

A: Photosynthetic B: Chemosynthetic C: Completely parasitic D: Absorptive heterotrophs

Q38 : Animals of which class of arthropoda are present everywhere_____________?

A: Crustacean B: Insecta C: Arachnida D: Myriapoda

Q39 : Which industries release particulate air pollutants along with harmless gases, such as nitrogen, oxygen, etc.?

A: Oil industry B: Invitro Fertilization clinics C: Plant tissue culture labs D: Thermal power plants and smelters

Q40 : Pure form of cellulose is

A: Cotton B: Chitin C: Cellophane D: Paper

Q41 : How much area of the Earth’s surface do the biodiversity hotspots cover?

A: 8 % B: 5 % C: 10 % D: 2 %

Q42 : Where are the catalytic converters fitted?

A: Plants B: Automobiles C: Electrostatic precipitator D: Cycles

Q43 : What are the species called whose number of individuals is greatly reduced to a critical level?

A: Indeterminate B: Rare C: Vulnerable D: Endangered

Q44 : By which of the following technique the gametes of threatened species are preserved in viable and fertile conditions for long periods?

A: Botanical gardens B: Cryopreservation techniques C: Zoological parks D: Wildlife safari parks

Q45 : What is the major role of peroxisomes in our body?

A: Breakdown of Formaldehyde B: Breakdown of proteins C: Breakdown of Hydrogen Peroxide D: Breakdown of Phthalates

Q46 : Which component of an electrostatic precipitator can remove gases like sulphur dioxide through a spray of water or lime?

A: Detergent B: Electrode wires C: Corona D: Scrubber

Q47 : What are the species confined to a particular region and not found anywhere else called?

A: Pandemic B: Endemic C: Extinct D: Vulnerable

Q48 : Which is the most widely used technique for removing particulate matter?

A: Loudspeakers B: Growing trees C: Electrostatic precipitator D: Magnets

Q49 : Which one is not correct for a productive theory?

A: It is predictive B: It discourages suggestion of different hypotheses C: It has explanatory power D: None of these

Q50 : Which cells in our body contains abundant peroxisomes?

A: Liver cells B: Reproductive cells C: Cardiac cells D: Brain cells

Q51 : Most abundant carbohydrate in nature is

A: cellulose B: polysaccharides C: starch D: glycogen

Q52 : Rabies is caused by: _____________?

A: Paramyxovirus B: Rhinovirus C: Arbovirus D: Rhabdovirus

Q53 : What is the number of wildlife sanctuaries India consisting of?

A: 900 B: 400 C: 448 D: 580

Q54 : Which of the following contains a linear system of conjugated double bonds?

A: β-carotene B: chlorophyll C: chloroplast D: thylakoid

Q55 : How many carbon atoms are present in the ring of fructose?

A: 6 B: 5 C: 4 D: 3

Q56 : Removal or degradation of environmental pollutants or toxic materials by living organisms is called__________?

A: Integrated disease management B: Hydroponic culture technique C: Pasteurization D: Bioremediation

Q57 : What percent of the total oxygen in the Earth’s atmosphere is released by the Amazon forest?

A: 50 % B: 20 % C: 40 % D: 2 %

Q58 : What is the mode of transmission of Hepatitis virus?

A: Aerosol B: Parentral (via blood) C: Skin penetration D: Unknown

Q59 : Which utilitarian states that biodiversity is important for many ecosystem services that nature provides?

A: Narrowly utilitarian B: Broadly utilitarian C: Big utilitarian D: Small utilitarian

Q60 : What is the protection and conservation of species in their natural habitat called?

A: In-situ conservation B: Ex-situ conservation C: Off-site conservation D: No conservation

Q61 : How many species of plants contribute to the traditional medicines used by native peoples around the world?

A: 2,500 B: 2,000 C: 5,000 D: 25,000

Q62 : When the government of India did pass the Water (Prevention and Control of Pollution) Act?

A: 1999 B: 1974 C: 1896 D: 2010

Q63 : Numerous opportunistic diseases might attack a person suffering from which of the following diseases:

A: Measles B: Influenza C: Hepatitis A D: AIDS

Q64 : Why is CNG (Compressed Natural Gas) preferred over petrol?

A: Burns most efficiently B: It is expensive C: Burns less efficiently D: Can be adulterated

Q65 : How many species of plants are used for the production of the drugs currently sold in the market worldwide?

A: 2 % B: 35 % C: 25 % D: 5 %

Q66 : What is the number of biosphere reserves present throughout the world?

A: 24 B: 44 C: 14 D: 04

Q67 : Smallest disease causing agents in plants are ?

A: virion B: mycoplasma C: viroids D: prions

Q68 : In which approach do we protect and conserve the animals that need urgent measures to save it from extinction?

A: In-situ conservation B: On-site conservation C: Ex-situ conservation D: No conservation

Q69 : Which are the four most abundant elements in living cells ?

A: carbon, oxygen, nitrogen, sulfur B: carbon, oxygen, hydrogen, nitrogen C: carbon, oxygen, sulfur, phosphorus D: carbon, sulfur, hydrogen, magnesium

Q70 : The Viruses are: ____________?

A: Cellular B: Prokaryotes C: Non-cellular D: Eukaryotes

Q71 : Which utilitarian states that humans derive countless direct economic benefits from nature?

A: Big utilitarian B: Broadly utilitarian C: Narrowly utilitarian D: Small utilitarian

Q72 : What amount of noise may damage eardrums thus permanently impairing hearing ability?

A: 10 dB B: 150 dB C: 15 dB D: 50 dB

Q73 : Which genetic disorder is associated with dysfunction of peroxisomes?

A: Parkinson’s disease B: Down’s syndrome C: Zellweger Syndrome D: Bubble Boy Syndrome

Q74 : Among which of the following Peroxisomes are absent?

A: Bacillus subtilis B: Zea mays C: Homo habilis D: Euphlyctis hexadactylus

Q75 : What is an undesirable change in physical, chemical, or biological characteristics of air, land, water, or soil due to the introduction of contaminants called?

A: Succession B: Pollution C: Conservation D: Extinction

Q76 : What is the correct full form of IUCN?

A: International Union for Conservation of Nuts B: International Union for Conservation of Nature C: International Union for Conservation of Natural habitat D: International Union for Conservation of Numbers

Q77 : Which of the following is not a viral disease?

A: Cowpox B: Mumps C: Tetanus D: Small pox

Q78 : On what does the harmful effect of pollution depend on?

A: The concentration of pollutants and the organism B: The concentration, duration of exposure to pollutants and the organism C: The concentration of pollutants and duration of exposure D: The organism only

Q79 : Animals obtain carbohydrates mainly from___________?

A: Glucose B: Starch C: Sucrose D: Glycogen

Q80 : Which treatment is instituted in a cancerous patient?

A: Antibiotic therapy B: Radiotherapy C: Gene therapy D: None of these

Q81 : Pick out the odd one

A: cellulose B: Agar C: Galactose D: Pectin

Q82 : The number of species of organisms currently known to science is?

A: 3500000 B: 35000 C: 2500000 D: 25000000

Q83 : What is an important reason for the conservation of natural resources?

A: Disturb the ecological balance B: Preserve the biological diversity C: Disruption of quality of the environment D: Hampering the biological species

Q84 : Which is a parasitic plant?

A: cuscuta B: rose C: ferns D: mosses

Q85 : Energy absorbed from sunlight is stored as chemical energy in which of the following biomolecules?

A: ATP, ADP B: ATP, NADPH C: NAD, FAD D: NADH2, ATP

Q86 : How many total biodiversity hotspots are present throughout the world?

A: 20 B: 80 C: 55 D: 34

Q87 : Communities are ________ collection of organisms?

A: Static B: Dynamic C: May be static or dynamic D: None of these

Q88 : What was the position of Delhi among the 41 most polluted cities of the world in the 1990s?

A: 1 B: 2 C: 3 D: 4

Q89 : All of the following diseases caused by Viruses Except: ____________?

A: Poliomyelitis B: Common cold C: Yellow fever D: Diphtheria

Q90 : Which of the following statement is incorrect about antibiotics?

A: They are used against microorganisms B: They are always effective against bacteria C: They are used in diseases like tuberculosis and pneumonia D: They are derived from bacteria only

Q91 : What is the diameter of peroxisomes?

A: 0.2 – 0.5 µm B: 0.1 – 1.0 µm C: 1 – 5 µm D: 1 – 10 µm

Q92 : Glycosidic bond is formed by the

A: Removal of water B: Removal of oxygen C: Addition of oxygen D: Addition of water

Q93 : In which animal respiratory surface are found in more than one organ?

A: birds B: human C: fish D: frog

Q94 : Which statement is incorrect for cloning?

A: The nucleus of a fertilized egg is replaced by the nucleus from the cell of a fully developed individual B: Division of a single egg into one or more separate embryos. C: The individual is the mirror image of the parent organism D: It involve methods of sexual reproduction

Q95 : What is exploring molecular, genetic, and species-level diversity for products of economic importance called?

A: Biopiracy B: Biofuel C: Bioprospecting D: Biodiversity

Q96 : Which is an organic compound found in most cells ?

A: Water B: Glucose C: Oxygen D: Sodium chloride

Q97 : Operculum is present in_____________?

A: bony fish B: sea fish C: cartilaginous fish D: none of these

Q98 : Genome of viruses is composed of: ____________?

A: DNA B: RNA C: Protein D: Both A & B

Q99 : Which statement is incorrect for pasteurization?

A: It is used to preserve yogurt and milk B: It was developed by Louis Pasteur C: It involves heating the substance at high temperature for just few sec. D: It can be used to preserve vegetables and meat.

Q100 : Which of the following enzyme produced by peroxisomes are present in plant cell, but absent in human cell?

A: Catalase B: Peroxidase C: Uric acid oxidase D: D-amino acid oxidase

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