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Biology — Stream SA

Cell biology, genetics basics, human physiology, and ecology for Class 11

Key Concepts
  • Cell structure and function
  • Basics of plant and animal physiology
  • Diversity and classification of living organisms
  • Genetics fundamentals
Important Formulae
Cell cycle G₁ → S (DNA replication) → G₂ → M
Monohybrid ratio Aa × Aa ⇒ 3 : 1 phenotype
Quick Tips
  • Biology in KVPY tests understanding of processes, not just terms.
  • Relate structure to function — it makes recall reliable.
Sample Practice Questions

  1. Photosynthesis in plant cells takes place mainly in the:

    • Mitochondria
    • Nucleus
    • Chloroplast
    • Vacuole
    Show answer

    Answer: Chloroplast

  2. How many chambers does the human heart have?

    • 2
    • 3
    • 4
    • 1
    Show answer

    Answer: 4

  3. The green pigment in plants responsible for photosynthesis is:

    • Haemoglobin
    • Chlorophyll
    • Melanin
    • Carotene
    Show answer

    Answer: Chlorophyll

  4. Which organelle is known as the powerhouse of the cell?

    • Nucleus
    • Mitochondria
    • Ribosome
    • Golgi body
    Show answer

    Answer: Mitochondria

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Practice Questions

Practise KVPY questions on Biology — Stream SA. Answers are revealed after each question.

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Biology