641. Practice check: Choose the correct biology answer: which biological process produces two genetically similar daughter cells for growth?
✅ B. Mitosis
a: Fertilization | b: Mitosis | c: Meiosis | d: Transcription Read more
Biology MCQs – Page 33
642. Practice check: Choose the correct biology answer: which cells help defend the body against infection?
✅ D. White blood cells
a: Red blood cells | b: Adipocytes | c: Platelets | d: White blood cells Read more
643. Practice check: Choose the correct biology answer: which organ is primarily responsible for gas exchange in humans?
✅ D. Lungs
a: Spleen | b: Heart | c: Gallbladder | d: Lungs Read more
644. Practice check: Choose the correct biology answer: which part of a plant absorbs most water from soil?
✅ B. Roots
a: Flowers | b: Roots | c: Fruits | d: Leaves only Read more
645. Practice check: Choose the correct biology answer: which pigment gives many plants their green colour?
✅ A. Chlorophyll
a: Chlorophyll | b: Melanin | c: Haemoglobin | d: Keratin Read more
646. Practice check: Choose the correct biology answer: which organ filters blood to produce urine?
✅ D. Kidney
a: Stomach | b: Pancreas | c: Lung | d: Kidney Read more
647. Practice check: Choose the correct biology answer: which blood type is commonly called the universal red-cell donor in emergency contexts?
✅ A. O negative
a: O negative | b: B negative | c: A positive | d: AB positive Read more
648. Practice check: Choose the correct biology answer: which organelle is often called the powerhouse of the cell?
✅ C. Mitochondrion
a: Lysosome | b: Golgi apparatus | c: Mitochondrion | d: Ribosome Read more
649. Practice check: Choose the correct biology answer: which molecule carries hereditary information in most organisms?
✅ D. DNA
a: ATP | b: Glucose | c: Cellulose | d: DNA Read more
650. Practice check: Choose the correct biology answer: what is the basic structural and functional unit of life?
✅ C. Cell
a: Organ | b: Organ system | c: Cell | d: Tissue Read more
651. Practice check: Which option correctly completes the fact: which gas is released by plants during photosynthesis?
✅ A. Oxygen
a: Oxygen | b: Ammonia | c: Methane | d: Carbon monoxide Read more
652. Practice check: Which option correctly completes the fact: which process reduces chromosome number to form gametes?
✅ D. Meiosis
a: Mitosis | b: Budding | c: Binary fission | d: Meiosis Read more
653. Practice check: Which option correctly completes the fact: which plant tissue transports sugars?
✅ C. Phloem
a: Xylem | b: Stomata | c: Phloem | d: Cuticle Read more
654. Practice check: Which option correctly completes the fact: which plant tissue transports water upward?
✅ A. Xylem
a: Xylem | b: Phloem | c: Cortex only | d: Epidermis Read more
655. Practice check: Which option correctly completes the fact: which blood component helps form clots?
✅ B. Platelets
a: Alveoli | b: Platelets | c: Neurons | d: Red blood cells Read more
656. Practice check: Which option correctly completes the fact: which part of the eye controls the amount of light entering?
✅ D. Iris
a: Optic nerve | b: Cornea only | c: Retina | d: Iris Read more
657. Practice check: Which option correctly completes the fact: what is the largest organ of the human body?
✅ D. Skin
a: Lung | b: Brain | c: Liver | d: Skin Read more
658. Practice check: Which option correctly completes the fact: which structure controls what enters and leaves a cell?
✅ D. Cell membrane
a: Chromosome | b: Cell wall only | c: Nucleolus | d: Cell membrane Read more
659. Practice check: Which option correctly completes the fact: which molecule is the main immediate energy currency of cells?
✅ D. ATP
a: RNA | b: Starch | c: DNA | d: ATP Read more
660. Practice check: Which option correctly completes the fact: which organisms make their own food using sunlight in most ecosystems?
✅ D. Producers
a: Decomposers only | b: Predators | c: Primary consumers | d: Producers Read more