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 gland controls growth?
A) Adrenal
B) Thyroid
C) Pancreas
D) Pituitary
✅ Correct Answer: D
Explanation: The pituitary gland releases growth hormone.
Q: Which blood vessels carry blood away from the heart?
A) Veins
B) Nerves
C) Arteries
D) Capillaries
✅ Correct Answer: C
Explanation: Arteries transport oxygenated blood from the heart.
Q: What is the main function of white blood cells?
A) Carry nutrients
B) Form clots
C) Carry oxygen
D) Fight infection
✅ Correct Answer: D
Explanation: WBCs defend the body against pathogens.
Q: Which mineral is important for healthy bones?
A) Iodine
B) Iron
C) Zinc
D) Calcium
✅ Correct Answer: D
Explanation: Calcium strengthens bones and teeth.
Q: What is the main excretory organ in humans?
A) Liver
B) Skin
C) Lungs
D) Kidneys
✅ Correct Answer: D
Explanation: Kidneys filter and excrete nitrogenous waste.
Q: What do we call the study of heredity?
A) Anatomy
B) Evolution
C) Genetics
D) Ecology
✅ Correct Answer: C
Explanation: Genetics is the branch of biology that studies inheritance.
Q: Which part of the plant carries out photosynthesis?
A) Stem
B) Root
C) Flower
D) Leaf
✅ Correct Answer: D
Explanation: Leaves have chloroplasts for photosynthesis.
Q: What is the name of the male part of a flower?
A) Ovary
B) Stamen
C) Pistil
D) Style
✅ Correct Answer: B
Explanation: The stamen consists of the anther and filament.
Q: What do enzymes do?
A) Store fat
B) Carry oxygen
C) Provide energy
D) Speed up reactions
✅ Correct Answer: D
Explanation: Enzymes are biological catalysts.
Q: Which disease is caused by a lack of insulin?
A) Anemia
B) Diabetes
C) Rickets
D) Goiter
✅ Correct Answer: B
Explanation: Diabetes occurs when insulin is deficient or ineffective.