Biology MCQs
Biology MCQs are a vital tool for students preparing for medical entrance exams like MDCAT, as well as competitive tests like CSS, PMS, FPSC, and PPSC. This section includes expertly designed multiple-choice questions that span major areas of biology, including cell biology, botany, zoology, genetics, microbiology, and human physiology. With each question crafted to improve conceptual clarity and analytical skills, this resource helps users achieve high scores in both academic and professional exams. Biology MCQs are also useful for students of FSc Pre-Medical, BSc, and other life science programs. Each question is aligned with the latest curriculum and designed according to the pattern of Pakistan’s competitive exams. Whether you are targeting entry tests, job assessments, or semester exams, our Biology MCQs offer reliable and result-oriented practice.
Q: Which part of the plant conducts water?
A) Phloem
B) Root hairs
C) Stomata
D) Xylem
✅ Correct Answer: D
Explanation: Xylem transports water from roots to leaves.
Q: Which disease is caused by a virus?
A) Malaria
B) AIDS
C) Typhoid
D) Tuberculosis
✅ Correct Answer: B
Explanation: AIDS is caused by the Human Immunodeficiency Virus (HIV).
Q: Which enzyme breaks down starch?
A) Lipase
B) Pepsin
C) Protease
D) Amylase
✅ Correct Answer: D
Explanation: Amylase converts starch into sugar in the mouth.
Q: Which hormone regulates blood sugar?
A) Estrogen
B) Adrenaline
C) Thyroxine
D) Insulin
✅ Correct Answer: D
Explanation: Insulin lowers blood glucose levels.
Q: What is the function of red blood cells?
A) Fight infection
B) Carry oxygen
C) Clot blood
D) Digest food
✅ Correct Answer: B
Explanation: RBCs carry oxygen via hemoglobin.
Q: Which part of the brain controls heartbeat and breathing?
A) Cerebellum
B) Cerebrum
C) Medulla oblongata
D) Thalamus
✅ Correct Answer: C
Explanation: The medulla regulates vital functions like heartbeat and breathing.
Q: Which vitamin prevents scurvy?
A) Vitamin C
B) Vitamin D
C) Vitamin E
D) Vitamin A
✅ Correct Answer: A
Explanation: Vitamin C is essential for connective tissue repair.
Q: Which structure in the cell contains chromosomes?
A) Vacuole
B) Cytoplasm
C) Golgi body
D) Nucleus
✅ Correct Answer: D
Explanation: Chromosomes are found inside the nucleus.
Q: What is the term for animals that eat plants?
A) Omnivores
B) Herbivores
C) Carnivores
D) Decomposers
✅ Correct Answer: B
Explanation: Herbivores feed exclusively on plants.
Q: Which part of the flower develops into fruit?
A) Anther
B) Style
C) Stigma
D) Ovary
✅ Correct Answer: D
Explanation: The ovary becomes the fruit after fertilization.