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Biology MCQs

93 Questions Subject Test
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21
Easy fpsc ppsc nts Uploaded: 14 Jul 2026

What is the term for the sequence of feeding relationships in an ecosystem?

  • A Pyramid of numbers
  • B Ecological niche
  • C Trophic level
  • D Food chain
Permalink
Correct Answer: Option D — Food chain
Explanation: A food chain is a linear sequence showing how energy and nutrients are transferred from one organism to another through feeding relationships starting from producers.
Submitted by: PaperMCQs
22
Easy fpsc ppsc nts Uploaded: 14 Jul 2026

What is the process by which cells divide to produce two identical daughter cells?

  • A Meiosis
  • B Binary fission
  • C Mitosis
  • D Budding
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Correct Answer: Option C — Mitosis
Explanation: Mitosis is the type of cell division that produces two genetically identical daughter cells from a single parent cell and is responsible for growth tissue repair and asexual reproduction.
Submitted by: PaperMCQs
23
Medium fpsc ppsc nts Uploaded: 14 Jul 2026

What is the role of enzymes in biological reactions?

  • A Act as biological catalysts to speed up reactions
  • B Store genetic information
  • C Provide energy for reactions
  • D Transport oxygen in blood
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Correct Answer: Option A — Act as biological catalysts to speed up reactions
Explanation: Enzymes are biological catalysts that speed up chemical reactions in living organisms by lowering activation energy without being consumed or permanently altered in the process.
Submitted by: PaperMCQs
24
Easy ppsc nts Uploaded: 14 Jul 2026

Which organ in the human body is responsible for pumping blood throughout the body?

  • A Heart
  • B Lungs
  • C Liver
  • D Kidney
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Correct Answer: Option A — Heart
Explanation: The heart is a muscular organ that pumps blood throughout the body via the circulatory system supplying oxygen and nutrients to tissues and removing waste products.
Submitted by: PaperMCQs
25
Easy nts Uploaded: 06 Aug 2026

What is the term for the outer covering that protects plant cells and provides rigidity?

  • A Cell membrane
  • B Cytoplasm
  • C Cell wall
  • D Nucleus
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Correct Answer: Option C — Cell wall
Explanation: The cell wall, composed mainly of cellulose, surrounds plant cells and provides structural support, protection, and rigidity. Unlike the flexible cell membrane, the wall maintains the plant's overall shape and prevents excessive water uptake.
Submitted by: PaperMCQs
26
Medium fpsc ppsc nts Uploaded: 05 Aug 2026

Which part of the eye is the coloured ring that controls pupil size regulating light entry?

  • A Cornea
  • B Retina
  • C Iris
  • D Lens
Permalink
Correct Answer: Option C — Iris
Explanation: The iris is the coloured muscular ring of the eye that controls the size of the pupil through the action of dilator and constrictor muscles regulating the amount of light entering the eye.
Submitted by: PaperMCQs
27
Medium fpsc ppsc nts Uploaded: 14 Jul 2026

What is the term for the process by which plants lose water vapour through their leaves?

  • A Photosynthesis
  • B Osmosis
  • C Transpiration
  • D Respiration
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Correct Answer: Option C — Transpiration
Explanation: Transpiration is the process by which plants lose water vapour through stomata in their leaves creating a suction force that draws water and minerals up from the roots.
Submitted by: PaperMCQs
28
Hard nts Uploaded: 06 Aug 2026

Which blood vessel type has the thinnest walls, allowing exchange of substances with tissues?

  • A Capillaries
  • B Arteries
  • C Veins
  • D Venules
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Correct Answer: Option A — Capillaries
Explanation: Capillaries are the smallest blood vessels with extremely thin, single-cell-layer walls that permit efficient exchange of oxygen, nutrients, and waste products between blood and surrounding body tissues at the cellular level.
Submitted by: PaperMCQs
29
Medium fpsc ppsc nts Uploaded: 14 Jul 2026

Which scientist developed the modern system of classification for organisms?

  • A Carl Linnaeus
  • B Charles Darwin
  • C Gregor Mendel
  • D Louis Pasteur
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Correct Answer: Option A — Carl Linnaeus
Explanation: Carl Linnaeus developed the modern system of biological classification and binomial nomenclature in the 18th century providing a universal system for naming and organising living organisms.
Submitted by: PaperMCQs
30
Medium fpsc ppsc nts Uploaded: 14 Jul 2026

Which gland is called the master gland of the endocrine system?

  • A Thyroid gland
  • B Pituitary gland
  • C Adrenal gland
  • D Pancreas
Permalink
Correct Answer: Option B — Pituitary gland
Explanation: The pituitary gland is called the master gland because it secretes hormones that regulate the activity of other endocrine glands including the thyroid adrenal and reproductive glands.
Submitted by: PaperMCQs
31
Easy fpsc ppsc nts Uploaded: 14 Jul 2026

Which pigment in plants absorbs sunlight for photosynthesis?

  • A Chlorophyll
  • B Melanin
  • C Haemoglobin
  • D Keratin
Permalink
Correct Answer: Option A — Chlorophyll
Explanation: Chlorophyll is the green pigment found in chloroplasts of plant cells that absorbs sunlight primarily in the red and blue wavelengths to drive the process of photosynthesis.
Submitted by: PaperMCQs
32
Medium fpsc ppsc nts Uploaded: 14 Jul 2026

Which vitamin is essential for the formation of collagen and acts as an antioxidant?

  • A Vitamin A
  • B Vitamin C
  • C Vitamin D
  • D Vitamin K
Permalink
Correct Answer: Option B — Vitamin C
Explanation: Vitamin C is essential for collagen synthesis acting as a cofactor for enzymes that stabilise the collagen triple helix and its deficiency causes scurvy.
Submitted by: PaperMCQs
33
Easy fpsc ppsc nts Uploaded: 14 Jul 2026

Which type of reproduction in bacteria involves the cell splitting into two equal daughter cells?

  • A Budding
  • B Binary fission
  • C Fragmentation
  • D Sporulation
Permalink
Correct Answer: Option B — Binary fission
Explanation: Binary fission is the primary method of asexual reproduction in bacteria where a single cell replicates its DNA and divides into two genetically identical daughter cells.
Submitted by: PaperMCQs
34
Medium nts Uploaded: 06 Aug 2026

Which type of joint allows the widest range of movement in the human body?

  • A Ball and socket joint
  • B Hinge joint
  • C Pivot joint
  • D Fixed joint
Permalink
Correct Answer: Option A — Ball and socket joint
Explanation: Ball and socket joints, found in the shoulder and hip, allow rotational movement in nearly all directions due to their spherical structure fitting into a cup-shaped socket, providing exceptional flexibility compared to other joint types.
Submitted by: PaperMCQs
35
Medium fpsc ppsc nts Uploaded: 05 Aug 2026

Which type of muscle is under voluntary control and attached to bones to enable movement?

  • A Cardiac muscle
  • B Skeletal muscle
  • C Smooth muscle
  • D Involuntary muscle
Permalink
Correct Answer: Option B — Skeletal muscle
Explanation: Skeletal muscle also called striated or voluntary muscle is attached to bones via tendons and is under conscious control enabling all voluntary body movements and locomotion.
Submitted by: PaperMCQs
36
Medium fpsc ppsc nts Uploaded: 14 Jul 2026

What is the term for the bending of a plant toward light called?

  • A Geotropism
  • B Phototropism
  • C Hydrotropism
  • D Thigmotropism
Permalink
Correct Answer: Option B — Phototropism
Explanation: Phototropism is the growth response of a plant toward a light source caused by unequal distribution of auxin making cells on the shaded side elongate more than those on the lit side.
Submitted by: PaperMCQs
37
Medium nts Uploaded: 06 Aug 2026

What is the term for the division of the cell nucleus that results in two genetically identical daughter cells?

  • A Meiosis
  • B Fertilization
  • C Fission
  • D Mitosis
Permalink
Correct Answer: Option D — Mitosis
Explanation: Mitosis is a type of cell division that produces two genetically identical daughter cells from a single parent cell, essential for growth, tissue repair, and asexual reproduction in many organisms across the biological world.
Submitted by: PaperMCQs
38
Easy fpsc ppsc nts Uploaded: 14 Jul 2026

Which scientist is known as the Father of Biology?

  • A Charles Darwin
  • B Gregor Mendel
  • C Aristotle
  • D Louis Pasteur
Permalink
Correct Answer: Option C — Aristotle
Explanation: Aristotle is widely regarded as the Father of Biology for his systematic study and classification of living organisms in ancient Greece making him the first to create a scientific framework for biology.
Submitted by: PaperMCQs
39
Medium fpsc ppsc nts Uploaded: 14 Jul 2026

What is the term for the symbiotic relationship where both organisms benefit?

  • A Commensalism
  • B Parasitism
  • C Mutualism
  • D Amensalism
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Correct Answer: Option C — Mutualism
Explanation: Mutualism is a type of symbiotic relationship where both organisms involved benefit from their interaction such as the relationship between bees and flowers.
Submitted by: PaperMCQs
40
Medium fpsc ppsc nts Uploaded: 14 Jul 2026

Which blood group is known as the universal donor?

  • A AB positive
  • B A negative
  • C B negative
  • D O negative
Permalink
Correct Answer: Option D — O negative
Explanation: O negative blood is the universal donor type because it lacks A B and Rh antigens on red blood cells making it compatible for transfusion to recipients of any blood type.
Submitted by: PaperMCQs
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