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Biology Questions

Practice 243 Biology questions with detailed answers and explanations. Free MCQs, PYQs, and mock test questions for NEET, JEE, GATE, SSC and more.

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243
Total Questions
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30
Easy
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209
Medium
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4
Hard
Practice by Exam:General Science(74)General Awareness(40)Biology(39)Mathematics and Science(23)Science(22)General Studies(15)General Knowledge(10)General Knowledge and General Awareness(4)

About Biology — practice questions, PYQs & concepts

Biology is a frequently-tested topic on General Science, General Awareness, Biology. ExamTest.live currently lists 243 Biology questions spanning previous-year papers from 2017 to 2026, each with worked solutions and a step-by-step explanation. Use the filters on this page to focus on a specific exam, difficulty level or year — every answer key is free, no sign-up required.

Biology weight in competitive exams

Across our Biology question bank, the largest sources are General Science (74), General Awareness (40), Biology (39), Mathematics and Science (23) and Science (22). Click any exam chip above to drill down to that exam-specific question set.

How to use this page

  • Start easy: 30 easy Biology questions are available — build fluency before moving up.
  • Target weak years: Use the year filter to focus on the most recent 2026 paper or older PYQs you have not attempted.
  • Time yourself: Every question shows the average solve time so you can benchmark your speed against other students.
  • Read every explanation: Even on questions you got right — the explanation often surfaces a faster approach you can reuse.

All Biology Questions(1–100 of 243)

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Q1easymcqGeneral AwarenessSSC Selection Post 2021 Matriculation Level2026
19% accuracy
Which of the following parasites are responsible for malaria in humans?
Q2mediummcqGeneral AwarenessSSC Exam2026
7% accuracy
Identify the INCORRECT pair of cell shape types and their examples.
Q3mediummcqGeneral KnowledgeStaff Selection Commission2026
20% accuracy
Ananas comosus is the scientific name of _________.
Q4mediummcqGeneral KnowledgeStaff Selection Commission2026
60% accuracy
_________ is a condition in which there is a deficiency of red cells or of haemoglobin in the blood.
Q5mediummcqGeneral KnowledgeStaff Selection Commission2026
20% accuracy
Which organ produces insulin?
Q6mediummcqScienceSSC CGL2026
33% accuracy
__________ is a strong drug that doctors give to people to make them calm or help them sleep.
Q7easymcqGeneral StudiesCompetitive Exam2026
0% accuracy
Who suggested that "Everyone has a specific blood group"?
Q8mediummcqScienceSSC CGL2026
67% accuracy
Artocarpus integra is the scientific name of __________.
Q9mediummcqScienceSSC CGL2026
67% accuracy
Which organ stores fat soluble vitamins?
Q10mediummcqGeneral AwarenessCompetitive Exam2026
33% accuracy
______ is associated with the production and metabolism of fats and steroid hormones.
Q11mediummcqGeneral AwarenessCompetitive Exam2026
0% accuracy
Which antimicrobial enzymes are present in milk?
Q12mediummcqGeneral AwarenessCompetitive Exam2026
0% accuracy
Our brain mainly depends on which of the following food?
Q13mediummcqScienceSSC General Awareness2026
0% accuracy
Which of the following is not true about Bryophyta?
Q14mediummcqGeneral ScienceSSC GD2026
0% accuracy
Photosynthesis in plants converts light energy to ______ energy.
Q15mediummcqGeneral StudiesWBCS Prelims 20182026
50% accuracy
Muscle fatigue experienced after strenuous physical activity is primarily due to the accumulation of:
Q16mediummcqScienceSSC General Awareness2026
50% accuracy
Which type of pathogen causes the water-borne disease Poliomyelitis (Polio)?
Q17mediummcqGeneral ScienceSSC GD2026
0% accuracy
An ecosystem consists of:
Q18mediummcqGeneral AwarenessSSC Selection Post 2018 Higher Secondary Level2026
0% accuracy
नि म्नलि खि त में से कौ न जी वि त जी वों की को शि का ओं के भी तर जी वन-नि र्वा ह रा सा यनि क परि वर्तनों को संदर्भि त करता है?
Q19mediummcqGeneral AwarenessSSC Selection Post 2018 Higher Secondary Level2026
0% accuracy
एक स्थि र स्थिति बना ए रखने के लि ए आंतरि क वा ता वरण के वि नि यमन को कहते हैं:
Q20mediummcqGeneral AwarenessSSC Selection Post 2018 Higher Secondary Level2026
50% accuracy
हरे रंगरं के पौ धों द्वा रा प्रका श ऊर्जा को रा सा यनि क ऊर्जा में परि वर्ति त करने के लि ए उपयो ग की जा ने वा ली भौ ति क-रा सा यनि क प्रक्रि या को _________ के रूप में जा ना जा ता है।
Q21mediummcqGeneral ScienceSSC GD2026
0% accuracy
Leguminous plants replenish the soil by the presence of ______.
Q22mediummcqScienceWest Bengal Civil Services2026
0% accuracy
Which one of the following organs is the main respiratory organ of whale?
Q23mediummcqGeneral ScienceSSC CGL2026
50% accuracy
Which drug is used to cure Incontinence?
Q24mediummcqScienceSSC General Awareness2026
0% accuracy
Which aquatic animal has trailing tentacles?
Q25mediummcqGeneral ScienceSSC CGL2026
50% accuracy
In which part of the cell are proteins made?
Q26mediummcqGeneral ScienceSSC CGL2026
50% accuracy
Polio is a disease caused by which of the following?
Q27mediummcqScienceWest Bengal Civil Services2026
0% accuracy
Amount of normally carried by of pure human blood, is
Q28mediummcqScienceSSC General Awareness2026
0% accuracy
Hay fever is a sign of which of the following?
Q29mediummcqGeneral ScienceCompetitive Exam Practice Paper2026
0% accuracy
Directions: Fill in the blank with the correct word:
An Ophthalmologist is a person who deals with _______.
Q30mediummcqGeneral Intelligence and ReasoningStaff Selection Commission2026
50% accuracy
Select the related word/letters/number from the given alternatives.
Zoology : Animals :: Virology : ?
Q31mediummcqGeneral ScienceSSC CGL2026
0% accuracy
AIDS is an abbreviation for:
Q32mediummcqGeneral ScienceSSC CGL2026
0% accuracy
Chromosomes found in the salivary glands of Drosophila are:
Q33mediummcqScienceWest Bengal Civil Services2026
0% accuracy
'Tasar' silk fibre is produced by
Q34mediummcqGeneral ScienceCompetitive Exam Practice Paper2026
0% accuracy
An endocrinologist deals with:
Q35mediummcqScienceWest Bengal Civil Services2026
0% accuracy
One turn of DNA helix measures
Q36mediummcqGeneral AwarenessStaff Selection Commission2026
0% accuracy
The disease caused by deficiency of iodine is:
Q37mediummcqGeneral AwarenessStaff Selection Commission2026
0% accuracy
Which of the following is the correct formula for calculating Body Mass Index (BMI)?
Q38mediummcqGeneral KnowledgeCompetitive Exam2026
0% accuracy
Who are ethologists according to the terminology listed in image_66ceff.jpg?
Q39mediummcqGeneral ScienceCompetitive Exam2026
100% accuracy
Cranial nerves in mammals are
Q40mediummcqGeneral StudiesWBCS Prelims 20152026
0% accuracy
"Natural Selection" is the theory promulgated by
Q41mediummcqGeneral StudiesWBCS Prelims 20152026
0% accuracy
Cerebral Malaria is caused by
Q42mediummcqGeneral AwarenessSSC Selection Post 2021 Question Paper (09-Feb-2022) (Shift-1)2026
0% accuracy
Crayfish and ticks are classified into _____, respectively.
Q43mediummcqGeneral ScienceCompetitive Exam2026
0% accuracy
Phenotypic ratio of Mendelian Dihybrid cross is __________
Q44mediummcqGeneral AwarenessSSC Selection Post 2021 Question Paper (09-Feb-2022) (Shift-1)2026
0% accuracy
During the process of respiration in plants, which of the following is NOT released as a product?
Q45mediummcqGeneral ScienceSSC CGL2026
0% accuracy
Muscles get tired when there is shortfall of ____.
Q46mediummcqScienceCompetitive Exam Mock2026
0% accuracy
Water available for plants within the soil is
Q47mediummcqGeneral ScienceSSC CGL2026
0% accuracy
Carica papaya is the scientific name of ____.
Q48mediummcqGeneral ScienceSSC CGL2026
0% accuracy
____ is a drug or substance that makes you feel relaxed and makes your body work and react more slowly.
Q49mediummcqGeneral ScienceSSC CGL2026
0% accuracy
Which of the following is not true about Angiosperms?
Q50mediummcqGeneral ScienceSSC CGL2026
0% accuracy
All of the following are excretory (waste) products of animals, except
Q51mediummcqGeneral ScienceSSC CGL2026
100% accuracy
Kidney stones are composed of ______
Q52mediummcqGeneral AwarenessSSC Selection Post 2021 Matriculation Level2026
0% accuracy
Honey is composed of water and two main types of sugars: __________ and glucose.
Q53mediummcqGeneral ScienceSSC CGL2026
0% accuracy
RNA is a polymeric molecule. What does RNA stand for?
Q54mediummcqGeneral ScienceSSC CGL2026
0% accuracy
Vertebrates belongs to the phylum_________.
Q55mediummcqGeneral ScienceSSC CGL2026
100% accuracy
Which of the following constitute to form a gene?
Q56mediummcqGeneral AwarenessSSC CGL2026
0% accuracy
The gustatory receptors in human beings detect ________
Q57mediummcqGeneral ScienceSSC CGL2026
100% accuracy
Workers in leather tanning industries tend to suffer from _________.
Q58mediummcqGeneral AwarenessSSC CHSL Previous Year Paper2026
0% accuracy
Which of the following is NOT an example of a viral disease?
Q59mediummcqGeneral AwarenessSSC CGL2026
0% accuracy
When the medium surrounding the cell is a hypotonic solution, the cell is likely to ________
Q60mediummcqGeneral ScienceSSC CGL2026
0% accuracy
Panthera Tigris is the scientific name of _________.
Q61mediummcqGeneral Knowledge and General AwarenessSSC CPO 20242026
0% accuracy
Which of the following is NOT included in the Indian Food Guide Pyramid for healthy eating?
Q62mediummcqGeneral ScienceSSC CGL2026
0% accuracy
Which of the following is an example of perishable foods that CANNOT be stored for more than a day or two at room temperature, i.e., they have a shelf life of 1 or 2 days?
Q63mediummcqScienceSSC CGL2026
100% accuracy
Peeling, cutting or crushing onion tissue releases which enzyme that makes our eyes water?
Q64mediummcqGeneral SciencePrepp2026
0% accuracy
image
Which of the following proteins is found in cereal grains (such as wheat, barley, and rye), as referenced in image_3a2500.png?
Q65mediummcqGeneral ScienceSSC CGL2026
100% accuracy
Which drug is used as a Thyroid Hormone?
Q66mediummcqGeneral ScienceSSC CGL2026
0% accuracy
Myopia is a defect of eyes which is also known as _________.
Q67mediummcqScienceSSC CGL2026
0% accuracy
Which of the following does NOT belong to class Insects?
Q68mediummcqGeneral AwarenessIndian Competitive Exams2026
Rickets is caused by deficiency of:
Q69mediummcqSciencePractice Paper2026
Complete the analogy:
'Otitis media' : 'ear' :: 'Cataracts' :
Q70mediummcqGeneral AwarenessIndian Competitive Exams2026
Which glands help in digestion in the stomach?
Q71mediummcqGeneral AwarenessSSC Combined Graduate Level Exam2026
Which of the following items has a high fibre content?
Q72mediummcqGeneral StudiesUP Police Assistant Operator Exam2026
Blood clot is formed because of the presence of certain cells in the blood, called:
Q73mediummcqGeneral Knowledge and General AwarenessSSC CPO 20242026
Which of the following options is correctly matched?
Q74mediummcqGeneral StudiesUP Police Assistant Operator Exam2026
An adult human being normally passes about 1 to _________ of urine in 24 hours.
Q75mediummcqSciencePrepp2026
Which Greek term was first used by Ernst Haeckel in 1866 to refer to ‘the relation of animals to both the organic as well as the inorganic environment’?
Q76mediummcqGeneral AwarenessStaff Selection Commission2026
Which of the following is a unicellular organism?
Q77easymcqSocial StudiesUPTET Paper 2 (Social Science)2026
Hormone released from thyroid is
Q78mediummcqGeneral AwarenessUP Police Constable2026
Out of the following options, choose the name of a spore-producing plant:
Q79mediummcqGeneral AwarenessPractice Paper2026
Which pigment is responsible for the green colour of plants?
Q80mediummcqGeneral AwarenessStaff Selection Commission2026
Which of the following statements is correct about nutrients?
Q81mediummcqGeneral AwarenessStaff Selection Commission2026
The 'Blood Sugar' disease is also known as:
Q82easymcqMathematics and ScienceUPTET Paper 2 (Maths & Science)2026
Which equation shows the balanced reaction of Photosynthesis ?
Q83mediummcqGeneral ScienceStaff Selection Commission2026
What is the function of cytochrome P450?
Q84easymcqGeneral ScienceStaff Selection Commission2026
A plant cell wall is mainly composed of:
Q85mediummcqGeneral AwarenessUP Police Constable2026
The vascular tissue that transports water and nutrients in plants is called the ______.
Q86mediummcqMathematics and ScienceUPTET Paper 2 (Maths & Science)2026
Which one of the following plants keep its stomata open during the night and close during the day ?
Q87mediummcqGeneral AwarenessSSC CGL2026
Identify a mobile source of food.
Q88mediummcqGeneral Intelligence & ReasoningCompetitive Exam2026
How are dolphins and whales similar?
Q89mediummcqGeneral ScienceGeneral Knowledge Competitive Exams2026
Which of the following groups represents essential amino acids?
Q90mediummcqEnvironmental StudiesUPTET 2021 Memory Based Paper 12026
Which of the following organisms possesses chlorophyll?
Q91mediummcqGeneral StudiesUP Police Assistant Operator Exam2026
A resting person normally has a pulse rate between _________ beats per minute.
Q92easymcqGeneral Intelligence and ReasoningAdda2472026
Complete the analogy:
Q93mediummcqEnvironmental ScienceGeneral Knowledge Studies2026
Substances said to be biodegradable:
Q94mediummcqMathematics and ScienceUPTET Paper 2 (Maths & Science)2026
Vivipary germinations are found in
Q95mediummcqScienceCompetitive Exam2026
What is the main function of chlorophyll in plants?
Q96mediummcqGeneral ScienceCompetitive Exams2026
Which type of protein is found in milk?
Q97mediummcqGeneral AwarenessPractice Test2026
Elephantiasis is caused by:
Q98mediummcqMathematics and ScienceUPTET Paper 2 (Maths & Science)2026
HIV mainly infects
Q99easymcqMathematics and ScienceUPTET Paper 2 (Maths & Science)2026
Silk is obtained from which stage of silkworm?
Q100mediummcqGeneral AwarenessSSC CGL2026
Which of the following classes has the largest number of animals?
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We have 243 Biology questions spread across 3 pages, covering easy, medium, and hard difficulty levels with detailed explanations.
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Which exams include Biology questions?▼
Biology questions are commonly asked in General Science, General Awareness, Biology, Mathematics and Science, Science. You can filter by exam using the links above.
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Start with easy questions to build confidence, then tackle medium and hard ones. Use the filter buttons to sort by difficulty. Reveal the answer only after attempting each question, and read the explanation thoroughly.