Biology MCQs for SSC CGL, Get Solved Questions with Answers

Biology MCQs for SSC CGL: Biology is an important part of the General Awareness section in exams like SSC CGL, SSC CHSL, and Railways. Usually, 6–8 questions are asked from this topic. To help you prepare better, we have listed 30 easy-to-understand Biology multiple-choice questions below. Practice these to improve your score and confidence for SSC CGL 2025.

Tips and Tricks to Solve Biology Questions for SSC CGL

Biology questions in SSC CGL are usually direct and factual, focusing more on concepts than complex theories. With the right strategy, you can score full marks in this section. Here’s how to approach biology in SSC exams effectively:

1. Focus on NCERT Basics (Class 6–10)

Most SSC CGL biology questions are taken from NCERT science textbooks, especially from classes 6 to 10. If your basics are clear from these books, you can answer most questions confidently.

• Read summary points and tables from each chapter.
• Revise diagrams and charts regularly.
• Highlight commonly asked topics like cell structure, diseases, and nutrition.

2. Prepare a List of Important Topics

Not every biology chapter is equally important for exams. You should focus more on frequently asked areas.

• Human body systems: circulatory, digestive, respiratory.
• Vitamins, minerals, and their deficiency diseases.
• Plant biology: photosynthesis, transpiration, types of tissues.
• Diseases: causes, symptoms, prevention.
• Reproduction, heredity, and genetics.

3. Practice One Liners and Quick Facts

In SSC exams, questions are often straightforward and based on single facts. Memorizing one-liner questions will help you revise faster before exams.

• Use flashcards or quick revision notes.
• Focus on common “Which vitamin causes…” or “Who discovered…” types of questions.
• Practice from previous year papers and mock sets.

4. Revise Terminologies and Full Forms

Biology includes many scientific terms that repeat in exams. Understanding them will improve accuracy.

• Learn full forms like DNA, AIDS, HIV, etc.
• Revise terms like autotrophs, heterotrophs, immunity, enzymes, and hormones.
• Note down new words while reading and revise weekly.

5. Solve Previous Year Papers

Solving SSC CGL PYPs will help you understand the pattern and difficulty level. It also improves speed and accuracy.

• Start with Tier 1 previous year biology questions.
• After practice, move to mock tests with timers.
• Review your mistakes and revise the concepts.

Common Mistakes Students Make in Biology for SSC CGL

Biology may seem easy at first, but many students lose marks due to simple mistakes. These errors usually happen because of poor preparation strategies or skipping revision. Understanding these common mistakes can help you avoid them and score better in the exam.

• Skipping NCERT basics: Many students ignore Class 6–10 NCERT chapters, which are essential for SSC CGL questions.
• Not revising regularly: Biology has many facts and terms that need frequent revision to retain.
• Ignoring diagrams and tables: These are often used in direct questions, yet students rarely revise them.
• Relying on guesswork: Answering factual questions without clarity reduces your accuracy.
• Not solving PYQs: Skipping previous year questions means missing out on the actual exam pattern and repeated concepts.
• Focusing too much on advanced topics: SSC asks basic questions, so overcomplicating topics wastes time.

Biology MCQs for SSC CGL 2025 – Practice Questions

Biology is a key part of the science section in exams like SSC CGL, SSC CHSL, Railways and other Indian government tests. About 6–8 questions come from Biology, so knowing basic concepts helps boost your score. Practice these 30 easy questions to build confidence and improve accuracy.

1. What is the powerhouse of a cell?
(a) Nucleus
(b) Ribosome
(c) Mitochondria
(d) Golgi body
Answer: (c) Mitochondria

2. Which vitamin is produced in the skin when exposed to sunlight?
(a) Vitamin A
(b) Vitamin B
(c) Vitamin C
(d) Vitamin D
Answer: (d) Vitamin D

3. How many chambers are present in the human heart?
(a) 2
(b) 3
(c) 4
(d) 5
Answer: (c) 4

4. What is the basic unit of life?
(a) Atom
(b) Cell
(c) Tissue
(d) Organ
Answer: (b) Cell

5. Which blood component helps in clotting?
(a) RBC
(b) WBC
(c) Platelets
(d) Plasma
Answer: (c) Platelets

6. During photosynthesis, plants absorb which gas?
(a) Oxygen
(b) Nitrogen
(c) Carbon Dioxide
(d) Hydrogen
Answer: (c) Carbon Dioxide

7. Which organ purifies blood in the human body?
(a) Liver
(b) Kidney
(c) Lungs
(d) Heart
Answer: (b) Kidney

8. What gives green color to leaves?
(a) Carotene
(b) Xanthophyll
(c) Chlorophyll
(d) Anthocyanin
Answer: (c) Chlorophyll

9. Which nutrient is the main source of energy?
(a) Proteins
(b) Carbohydrates
(c) Lipids
(d) Vitamins
Answer: (b) Carbohydrates

10. What is the full form of DNA?
(a) Deoxyribonucleotide acid
(b) Deoxyribonucleic acid
(c) Dioxyribonucleic acid
(d) Dioxyribonucleotide acid
Answer: (b) Deoxyribonucleic acid

11. Which blood vessel carries oxygen-rich blood from the heart?
(a) Vein
(b) Pulmonary artery
(c) Aorta
(d) Vena cava
Answer: (c) Aorta

12. In humans, fertilization takes place in the:
(a) Uterus
(b) Ovary
(c) Fallopian tube
(d) Cervix
Answer: (c) Fallopian tube

13. Which is the longest bone in the human body?
(a) Humerus
(b) Tibia
(c) Femur
(d) Radius
Answer: (c) Femur

14. Which enzyme breaks down starch into sugar?
(a) Lipase
(b) Amylase
(c) Protease
(d) Lactase
Answer: (b) Amylase

15. Which gland produces insulin?
(a) Thyroid
(b) Pituitary
(c) Pancreas
(d) Adrenal
Answer: (c) Pancreas

16. Which part of the brain controls body balance?
(a) Cerebrum
(b) Cerebellum
(c) Medulla
(d) Pons
Answer: (b) Cerebellum

17. Which process forms gametes in humans?
(a) Mitosis
(b) Meiosis
(c) Fusion
(d) Budding
Answer: (b) Meiosis

18. What is the unit of heredity?
(a) Chromosome
(b) DNA
(c) Gene
(d) Nucleus
Answer: (c) Gene

19. Deficiency of Vitamin K causes issues in:
(a) Vision
(b) Bone growth
(c) Blood clotting
(d) Digestion
Answer: (c) Blood clotting

20. The process where water moves in plants from root to leaves is:
(a) Photosynthesis
(b) Respiration
(c) Transpiration
(d) Translocation
Answer: (c) Transpiration

21. What stores genetic material in the cell?
(a) Nucleus
(b) Mitochondria
(c) Ribosome
(d) Cytoplasm
Answer: (a) Nucleus

22. Which part of the plant cell does photosynthesis?
(a) Mitochondria
(b) Chloroplast
(c) Vacuole
(d) Cell wall
Answer: (b) Chloroplast

23. Deficiency of Vitamin C causes:
(a) Rickets
(b) Beriberi
(c) Pellagra
(d) Scurvy
Answer: (d) Scurvy

24. Which blood group is universal donor?
(a) A
(b) AB
(c) B
(d) O
Answer: (d) O

25. The waxy layer on leaves is called:
(a) Stomata
(b) Cuticle
(c) Epidermis
(d) Mesophyll
Answer: (b) Cuticle

26. The basic process of breathing is known as:
(a) Digestion
(b) Respiration
(c) Circulation
(d) Photosynthesis
Answer: (b) Respiration

27. The study of heredity is called:
(a) Anatomy
(b) Ecology
(c) Genetics
(d) Botany
Answer: (c) Genetics

28. Which organelle is called “post office” of the cell?
(a) Ribosome
(b) Lysosome
(c) Golgi apparatus
(d) Endoplasmic reticulum
Answer: (c) Golgi apparatus

29. Enzymes are made of which macromolecule?
(a) Fats
(b) Proteins
(c) Carbohydrates
(d) DNA
Answer: (b) Proteins

30. Glucose gives energy through:
(a) Fermentation
(b) Anaerobic respiration
(c) Aerobic respiration
(d) Photosynthesis
Answer: (c) Aerobic respiration

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