Single Matching Questions Match the contents of the column I and II. Column I Column II 1. Robert Hooke (a) protoplasm 2. Robert Brown (b) cell theory 3. Schleiden and Schwann (c) the term ‘cell’ 4. Von Mohl (d) diffusion 5. Cellulose (e) nucleus 6. Glycogen (f) inheritance 7. Mitochondria (g) energy 8. Chromosomes (h) glucose synthesis 9. Chloroplasts (i) Golgi apparatus 10. Nucleus (j) storage 11. Cell wall (k) Cellulose 12. Central vacuole (l) DNA plus histone 13. Chromatin (m) double membrane (n) cell sap

1-c Robert Hooke discovered ‘Cell’ in the year 1665. He observed the dead cell wall of plant cells and found a honey comb structure. 2-eRobert Brown, a Scottish botanist discovered the nucleus in plant cells the year 1831. He discovered the nucleus while studying the process of fertilization. 3-b Jakob Matthias Schleiden first proposed that all the plants consist of cells and Theodor Schwann stated that all plants are animals are made up of cells. 4-aJ.E.Purkinje in 1839 gave the term protoplasm for the living substance present inside the cell. Von Mohl redefined the term protoplasm in 1846. He coined the word with reference to the embryonic stage found in eggs. *Von Mohl is not mentioned in the textbook. 5-i Golgi apparatus acts as an area of assembly for the storage and processing of cellulose inside a cell. It is involved in the synthesis of cell wall, plasma membrane and lysosomes 6-j Glycogen is a multibranched polysaccharide glucose chain which is stored in animal cells. It is a form of energy storage. This form of glucose is made up of many glucose molecules and is called glycogen. 7-g Mitochondria perform cellular respiration. It breaks down the nutrients and converts them into energy. They use molecular oxygen from air to oxidise the carbohydrates and fats present in the cells to carbondioxide and water vapour. 8-f Chromosomes are thread like structures that contain the genetic material in the form of genes that gets inherited to the offsprings during the formation of gametes. 9-h The chloroplast is the plant cell organelle where glucose is formed through the process of photosynthesis. chloroplast contain a green pigment called chlorophyll which traps the sunlight. 10-m The nucleus is a double-membraned structure enclosed by a nuclear envelope. The nuclear envelope seperates the nucleus from the cytoplasm 11-K Cellulose is one of the compositions of the plant cell wall. Cellulose is a polysaccharide. It consis of tiny cellulose fibres called microfibrils. 12-n Central vacuole comprises of cell sap and tonoplast. The cell sap involves the liquid stored inside the vacuoles. The cell sap is a watery solution rich in sugars, amino acids, proteins, minerals etc. 13-l Chromatin is a thin, thread-like loosely condensed form of the chromosome. Chromatin consists of genetic substance DNA and histone (proteins).

Double Matching Questions Match the contents of Columns I. II and III. Column I Column II Column III (A) Multicellular organisms (i) Lipids I. Turgidity (B) Mitochondrion (ii) Plants II. Inner folded membrane (C) Plasma membrane (iii) Cell sap III. Proteins (D) Central vacuole (iv) Outer permeable membrane IV. Animals (e) Chloroplast (v) Digestive enzymes V. Phagosome (i) Lysosomes (vi) Carbon dioxide VI. Thylakoid

a-ii-IV The multicellular organisms consist of plants and animals. The multicellular organisms are made up of millions of cells. b-iv-II A mitochondrion is a double-membraned structure made up of the outer membrane and the inner membrane. The outer membrane is freely permeable to protons that makes the pH of the organelle higher. The inner folded membrane increases the surface area of the mitochondria. c-i-III The plasma membrane is a semi-permeable membrane made up of phospholipid bi-layer embedded with various proteins. The proteins embeddded in the phospholipid bilayer carry out selective transport. d-iii-I Central vacuoles consist of the cell sap and tonoplasts present inside the plant cells. The central vacuoles store water and maintain the turgidity of the cell. e-vi-VI Chloroplasts consist of the thylakoids where both light and dark reactions occur. The resultant products (ATP and NADPH) are used to fix carbon dioxide. Column I Column II Column III (a) Multicellular organisms (ii) Plants IV. Animals (b) Mitochondrion (iv) Outer permeable membrane II. Inner folded membrane (c) Plasma membrane (i) Lipids III. Proteins (d) Central Vacuole (iii) Cell sap IV. Turgidity (e) Chloroplast (vi) Carbon dioxide VI. Thylakoid (f) Lysosomes (v) Digestive enzymes V . Phagosome. f-v-V Lysosomes are membrane-bound organelles. Lysosomes contain digestive enzymes. Phagosomes containing the membrane-bound proteins fuse with lysosomes forming phagolysosome

Key or Check List Items Which type of metabolism, anabolism (A) and catabolism (C) are performed by the following organelles. Organelle Metabolism_ 1. Mitochondria …… 2. Lysosomes …… 3. Chloroplasts …… 4. Endoplasmic reticulum (ER) …… 5. Golgi apparatus ……

1-(C) The carbohydrate catabolism is occurs in mitochondria. Mitochondria take in nutrients from a cell, break it down (catabolism) with molecular oxygen and store energy in the form of ATP. 2-(C) Lysosomes contain certain hydrolytic enzymes. These hydrolytic enzymes break down different biomolecules such as fats, proteins, lipids, etc. Glycoproteins are delivered to lysosomes for catabolism. 3-A Chloroplasts follow the process of anabolism because it absorbs sunlight and takes in water and carbon dioxide forming the food for the plants i.e, glucose.In leaves the anabolic pathways are localized in the chloroplast. 4-(A) The endoplasmic reticulum is an organelle present in the eukaryotic cells of plants and animals. Endoplasmic reticulum undergoes the process of anabolism as it is a very important site for the synthesis of lipids and proteins. Organelle Metabolism 1. Mitochondria C 2. Lysosomes C 3. Chloroplasts A 4. Endoplasmic Reticulum A 5. Golgi apparatus A 5-(A) Golgi apparatus are organelles that are involved in the synthesis of lysosomes, packaging of proteins, modification of proteins, etc. It is an anabolic process.

The plant cell wall is mainly composed of

EASY

9th CBSE

IMPORTANT

Science for Ninth Class (Part-3) Biology>Chapter 2 - The Fundamental Unit of Life: Cell>CLASS ASSIGNMENT>Q II

Cell organelles perform _____ function in all organisms. (similar/dissimilar)

EASY

9th CBSE

IMPORTANT

Science for Ninth Class (Part-3) Biology>Chapter 2 - The Fundamental Unit of Life: Cell>CLASS ASSIGNMENT>Q II

Cell theory was refined by_____.(Hooke/ Robert brown/ Virchow)

EASY

9th CBSE

IMPORTANT

Science for Ninth Class (Part-3) Biology>Chapter 2 - The Fundamental Unit of Life: Cell>CLASS ASSIGNMENT>Q II

Cells were discovered by Robert hooke in _____.

HARD

9th CBSE

IMPORTANT

Science for Ninth Class (Part-3) Biology>Chapter 2 - The Fundamental Unit of Life: Cell>CLASS ASSIGNMENT>Q III

Single Matching Questions
Match the contents of the column I and II.

Column I	Column II
1. Robert Hooke	(a) protoplasm
2. Robert Brown	(b) cell theory
3. Schleiden and Schwann	(c) the term ‘cell’
4. Von Mohl	(d) diffusion
5. Cellulose	(e) nucleus
6. Glycogen	(f) inheritance
7. Mitochondria	(g) energy
8. Chromosomes	(h) glucose synthesis
9. Chloroplasts	(i) Golgi apparatus
10. Nucleus	(j) storage
11. Cell wall	(k) Cellulose
12. Central vacuole	(l) DNA plus histone
13. Chromatin	(m) double membrane
	(n) cell sap

MEDIUM

9th CBSE

IMPORTANT

Science for Ninth Class (Part-3) Biology>Chapter 2 - The Fundamental Unit of Life: Cell>CLASS ASSIGNMENT>Q III

Double Matching Questions
Match the contents of Columns I. II and III.

Column I	Column II	Column III
(A) Multicellular organisms	(i) Lipids	I. Turgidity
(B) Mitochondrion	(ii) Plants	II. Inner folded membrane
(C) Plasma membrane	(iii) Cell sap	III. Proteins
(D) Central vacuole	(iv) Outer permeable membrane	IV. Animals
(e) Chloroplast	(v) Digestive enzymes	V. Phagosome
(i) Lysosomes	(vi) Carbon dioxide	VI. Thylakoid

MEDIUM

9th CBSE

IMPORTANT

Science for Ninth Class (Part-3) Biology>Chapter 2 - The Fundamental Unit of Life: Cell>CLASS ASSIGNMENT>Q III

Key or Check List Items
Which type of metabolism, anabolism
(A) and catabolism (C) are performed by the following organelles.

Organelle	Metabolism_
1. Mitochondria	……
2. Lysosomes	……
3. Chloroplasts	……
4. Endoplasmic reticulum (ER)	……
5. Golgi apparatus	……

MEDIUM

9th CBSE

IMPORTANT

Science for Ninth Class (Part-3) Biology>Chapter 2 - The Fundamental Unit of Life: Cell>CLASS ASSIGNMENT>Q IV

Write down three basic characteristics of a cell.

MEDIUM

9th CBSE

IMPORTANT

Science for Ninth Class (Part-3) Biology>Chapter 2 - The Fundamental Unit of Life: Cell>CLASS ASSIGNMENT>Q IV

What do you mean by unicellular and multicellular?

The plant cell wall is mainly composed of .

Important Questions on The Fundamental Unit of Life: Cell

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