CUET Biology Practice Test

Biology Quiz

1. Which part of the nephron is primarily responsible for filtration of blood?

(A) Loop of Henle (B) Proximal convoluted tubule (C) Bowman's capsule (D) Collecting duct

2. Which of the following elements is essential for the synthesis of chlorophyll?

(A) Calcium (B) Magnesium (C) Sodium (D) Potassium

3. If a heterozygous tall plant (Tt) is crossed with a dwarf plant (tt), what will be the phenotypic ratio of the offspring?

(A) 1 Tall: 3 Dwarf (B) 1 Tall: 1 Dwarf (C) All Tall (D) All Dwarf

4. Which of the following organelles is involved in the synthesis of proteins?

(A) Ribosome (B) Lysosome (C) Golgi apparatus (D) Peroxisome

5. Which enzyme is responsible for the unwinding of DNA during replication?

(A) DNA polymerase (B) DNA ligase (C) DNA helicase (D) RNA primase

6. Which type of bond is found between amino acids in a protein chain?

(A) Hydrogen bond (B) Peptide bond (C) Ionic bond (D) Glycosidic bond

7. Which of the following is a pioneer species in primary succession on rocks?

(A) Ferns (B) Lichens (C) Mosses (D) Algae

8. During which phase of mitosis do the centromeres split and chromatids move to opposite poles?

(A) Prophase (B) Metaphase (C) Anaphase (D) Telophase

9. The gradual and predictable change in species composition in an area is known as:

(A) Succession (B) Evolution (C) Mutation (D) Speciation

10. The part of the brain responsible for maintaining posture and balance is the:

(A) Cerebrum (B) Medulla oblongata (C) Cerebellum (D) Hypothalamus

11. Double fertilization is a characteristic feature of which group of plants?

(A) Bryophytes (B) Gymnosperms (C) Pteridophytes (D) Angiosperms

12. Which ion plays a crucial role in the generation of action potential in neurons?

(A) Calcium (Ca2+) (B) Potassium (K+) (C) Magnesium (Mg2+) (D) Sodium (Na+)

13. Which of the following blood vessels carries oxygenated blood?

(A) Pulmonary artery (B) Pulmonary vein (C) Superior vena cava (D) Right atrium

14. In which part of the chloroplast do the light-dependent reactions of photosynthesis occur?

(A) Stroma (B) Inner membrane (C) Thylakoid membrane (D) Outer membrane

15. Which of the following organisms is correctly matched with its kingdom?

(A) Amoeba - Plantae (B) Euglena - Fungi (C) Paramecium - Protista (D) Nostoc - Animalia

16. Which technique is used to amplify a segment of DNA?

(A) Gel electrophoresis (B) PCR (Polymerase Chain Reaction) (C) DNA fingerprinting (D) ELISA

17. Which plant hormone is primarily responsible for cell elongation?

(A) Cytokinin (B) Auxin (C) Abscisic acid (D) Ethylene

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