STD – 9th BIOLOGY
CBSE
RJ VISION PVT. LTD.
(MOST STABLE & INNOVATIVE INSTITUTE)
Chapter: The Fundamental Unit Of Life ASSIGNMENT-2024 Issue Date:____________
Submission Date: _______ _
(A) Very short answer type question:
1. ‘Every multicellular organism has arisen from a single cell; justify.
2. What is the functional unit of life? Explain.
3. What is cell Theory? Explain.
4. Why is plasma membrane called selectively permeable?
5. Define plasmolysis.
(B) Short answer type questions:
1. Write two functions of Smooth Endoplasmic Reticulum.
2. Differentiate chromatin,chromosome and DNA.
3. Differentiate cell membrane and cell wall.
4. What is nucleoid?
(C) Long answer type question:
1. Why mature plant cell have a large centrally placed vacuole?
2. (a) Write the function of nucleus?
(b) What are they consist of?
3. Name the cell organelle which is called as Suicidal bag? Why?
(D) Very long answer type questions:
1. Define
(a) Hypertonic solutions.
(b) Hypotonic solutions.
(c) Isotonic solutions.
2. (a) What are plastids?
(b) Explain their functions with their types.
3. (a) Differentiate meiosis and mitosis.
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