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Biology Mcqs

Study the fundamentals and advanced topics of life sciences with our topic-wise Biology MCQs designed for academic and competitive exam preparation. These multiple-choice questions cover cell biology, genetics, human physiology, microbiology, plant biology, ecology, evolution, biotechnology, enzymes, DNA & RNA, and biological classifications. Ideal for students, educators, and candidates appearing in PPSC, FPSC, CSS, NTS, SPSC, BPSC, KPSC, ETEA, AJKPSC, and other testing bodies. Also beneficial for exams related to science teaching, medical entry tests, and public sector recruitment in health departments.

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1 Biology Mcqs

The process of splitting water molecules in the presence of light energy is called .

  • Electrolysis
  • Photolysis
  • Radiolysis
  • Thermolysis
0 Comments
Correct Answer: B. Photolysis

Explanation:

Photolysis is the process by which water molecules (H₂O) are split into hydrogen ... Read More Details

2 Biology Mcqs

The movement of food through the food pipe is called ______ movement.

  • Gastric
  • Diastolic
  • Peristaltic
  • Oscillatory
0 Comments
Correct Answer: C. Peristaltic

Explanation:

Peristalsis is the wave-like muscular contraction that moves food through the esophagus and ... Read More Details

3 Biology Mcqs

Which of the following does not have involuntary muscles?

  • Digestive system
  • Blood vessels
  • Heart
  • Brain
0 Comments
Correct Answer: D. Brain

Explanation:

The correct answer is the brain, as it does not contain involuntary muscles. ... Read More Details

4 Biology Mcqs

In which part of the human body are involuntary muscles present?

  • Brain
  • Tongue
  • Digestive system
  • Limbs
0 Comments
Correct Answer: C. Digestive system

Explanation:

Involuntary muscles are the muscles in the human body that work automatically, without ... Read More Details

5 Biology Mcqs

Which organ is considered as the chemical factory of the human body?

  • Stomach
  • Intestine
  • Liver
  • Kidneys
0 Comments
Correct Answer: C. Liver

Explanation:

The liver is considered the chemical factory of the human body because it ... Read More Details

6 Biology Mcqs

A crescograph is a device used to measure the growth of ?

  • Microorganisms
  • Plants
  • Humans
  • Pollution
0 Comments
Correct Answer: B. Plants

Explanation:

A crescograph is a scientific device used to measure the rate of growth ... Read More Details

7 Biology Mcqs

Which of the following organisms releases molecular oxygen (O₂) into water?

  • E. coli
  • Phytoplankton
  • Amoeba
  • Salmonella
0 Comments
Correct Answer: B. Phytoplankton

Explanation:

Phytoplankton are microscopic plant-like organisms that float near the surface of oceans, lakes, ... Read More Details

8 Biology Mcqs

Which of the following is an example of a rhizome?

  • Carrot
  • Tomato
  • Ginger
  • Garlic
0 Comments
Correct Answer: C. Ginger

Explanation:

A rhizome is a type of modified underground stem that grows horizontally beneath ... Read More Details

9 Biology Mcqs

Which of the following is a micronutrient for plants?

  • Oxygen
  • Nitrogen
  • Boron
  • Carbon
0 Comments
Correct Answer: C. Boron

Explanation:

Plants require a variety of nutrients to grow, develop, and carry out essential ... Read More Details

10 Biology Mcqs

A seed can germinate even in the absence of which of the following?

  • Oxygen
  • Light
  • Moisture
  • Suitable temperature
0 Comments
Correct Answer: B. Light

Explanation:

Seed germination is the process by which a dormant seed develops into a ... Read More Details

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