Class 9/Practice Questions
Created by Titas Mallick
Biology Teacher • M.Sc. Botany • B.Ed. • CTET (CBSE) • CISCE Examiner
Created by Titas Mallick
Biology Teacher • M.Sc. Botany • B.Ed. • CTET (CBSE) • CISCE Examiner
Practice questions testing deep understanding of cell organelles, membrane transport, and cell theory.
Q1. A student places a peeled piece of potato in a highly concentrated salt solution. After 30 minutes, they observe that the potato piece has become limp and shrunk in size. Explain the biological phenomenon responsible for this observation.
Q2. Lysosomes are known as the "suicide bags" of the cell. Under what specific cellular condition do lysosomes justify this name, and what exactly do they do?
Q3. Assertion (A): The rough endoplasmic reticulum (RER) appears "rough" under a microscope. Reason (R): The surface of the RER is studded with thousands of ribosomes, which are the sites of protein synthesis.
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