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The Fundamental Unit of Life (Class IX)

The Fundamental Unit of Life

21 Questions Published
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Questions

Question 1 Multiple Choice (Single Answer)

Which of the following are absent in a prokaryotic cell?

  1. Mitochondria and nucleus
  2. Mitochondria and ribosome
  3. Nucleus and ribosome
  4. Plasma membrane and chromosome
  5. Plasma membrane and ribosome
Question 2 Multiple Choice (Single Answer)

Who among the following scientists discovered the nucleus?

  1. Schleiden
  2. Robert Brown
  3. Schwann
  4. Virchow
  5. Haeckel
Question 3 Multiple Choice (Single Answer)

The shape of a cell can be variable. Which of the following organisms exhibit(s) variable cell shapes?

a. Amoeba
b. Euglena
c. Paramecium

  1. Only a
  2. Only a and b
  3. Only b
  4. Only b and c
  5. Only c
Question 4 Multiple Choice (Single Answer)

Which of the following statements is/are false?

a. Smooth endoplasmic reticulum detoxifies many poisons and drugs.
b. Cell forming the body of amoeba has an ever-changing shape.
c. Centrosome is found only in the plant cells.

  1. Only a
  2. Only a and b
  3. Only b
  4. Only b and c
  5. Only c
Question 5 Multiple Choice (Single Answer)

Which of the following are the non-living parts of a cell?

a. Mitochondria
b. Lysosomes
c. Vacuoles
d. Granules

  1. Only a and b
  2. Only b and c
  3. Only a and c
  4. Only a and d
  5. Only c and d
Question 6 Multiple Choice (Single Answer)

Match the following:

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Types of cells Functions
a. Mucus cells 1. They secrete a proenzyme of protein digestive enzyme.
b. Zymogen cells 2. They secrete hydrochloric acid activating pepsinogen into functional pepsin.
c. Parietal cells 3. They secrete mucus for lubricating the food.
  1. a - 2, b - 1, c - 3
  2. a - 3, b - 1, c - 2
  3. a - 1, b - 3, c - 2
  4. a - 1, b - 2, c - 3
  5. a - 3, b - 2, c - 1
Question 7 Multiple Choice (Single Answer)

Which of the following is a property of active transport?

  1. It is a slow process.
  2. It can move materials across a biomembrane down the concentration gradient.
  3. It takes place in both directions.
  4. It does not use energy.
  5. It leads to accumulation of materials in the cell.
Question 8 Multiple Choice (Single Answer)

Match the following:

 
Names of cells Shapes
a. Red blood cells 1. Elongated
b. Pigment cells of skin 2. Spindle-shaped
c. Nerve cells 3. Discoidal
d. Smooth muscle fibres 4. Branched
  1. a - 1, b - 3, c - 4, d - 2
  2. a - 1, b - 2, c - 3, d - 4
  3. a - 4, b - 3, c - 1, d - 2
  4. a - 3, b - 4, c - 1, d - 2
  5. a - 3, b - 4, c - 2, d - 1
Question 9 Multiple Choice (Single Answer)

Which of the following statements about the cell wall is/are false?

a. The major function of the cell wall is to provide protection and strength to the cell.
b. The cell wall is formed of lipids and proteins and a small number of carbohydrates.
c. The cell wall is quite thick in plant cells and lies outside the cells.

  1. Only a
  2. Only a and b
  3. Only b
  4. Only b and c
  5. Only c
Question 10 Multiple Choice (Single Answer)

Which of the following chemicals is/are present in the cytoplasm in the largest percentage?

  1. Nitrogen
  2. Hydrogen
  3. Carbon
  4. Oxygen
  5. Trace elements
Question 11 Multiple Choice (Single Answer)

Which of the following contain(s) hereditary information of the cell in the form of genes?

  1. Nucleus
  2. Plasma membrane
  3. Nucleolus
  4. Cell wall
  5. Chromosomes
Question 12 Multiple Choice (Single Answer)

Which of the following is/are also known as the suicide bag(s) of a cell?

  1. Golgi apparatus
  2. Lysosomes
  3. Chloroplasts
  4. Vacuoles
  5. Mitochondria
Question 13 Multiple Choice (Single Answer)

Which of the following is/are not the function(s) of the vacuoles?

a. They help in maintaining the osmotic pressure in a cell.
b. They impart various colours to flowers to attract insects for pollination.
c. They provide turgidity and rigidity to the plant cells.

  1. Only a
  2. Only a and b
  3. Only b
  4. Only b and c
  5. Only c
Question 14 Multiple Choice (Single Answer)

Match the following:

 
a. Exocytosis 1. It is the process in which the cells ingest material through the plasma membrane.
b. Osmosis 2. It is the process in which the membrane of a vesicle fuses with the plasma membrane and extrudes its contents to the surrounding medium.
c. Endocytosis 3. It is the process in which the water passes from a region of high water concentration through a semi-permeable membrane to a region of low water concentration.
  1. a - 2, b - 3, c - 1
  2. a - 2, b - 1, c - 3
  3. a - 1, b - 2, c - 3
  4. a - 3, b - 2, c - 1
  5. a - 1, b - 3, c - 2
Question 15 Multiple Choice (Single Answer)

Which of the following statements is/are false about leucoplasts?

a. They are cylindrical or round in shape.
b. They take part in storage of food.
c. They do not change into other types of plastids.

  1. Only a
  2. Only a and b
  3. Only b
  4. Only b and c
  5. Only c
Question 16 Multiple Choice (Single Answer)

Which of the following is/are not present in the ribosomes?

a. RNA
b. Proteins
c. Lipids

  1. Only a
  2. Only a and b
  3. Only b
  4. Only b and c
  5. Only c
Question 17 Multiple Choice (Single Answer)

Which of the following is/are the key element(s) in the structure of plasma membrane?

a. Proteins
b. Phospholipids
c. Cholesterol
d. Polysaccharides

  1. Only a and c
  2. Only c
  3. Only b
  4. Only c and d
  5. Only d
Question 18 Multiple Choice (Single Answer)

Which of the following statements is/are false?

a. Mitochondria and plastids can replicate themselves as they both have DNA and ribosomes.
b. Plasmodesmata is the membrane of vacuole in a plant cell.
c. The plasma membrane of a plant cell is surrounded by a rigid cell wall of cellulose.

  1. Only a
  2. Only a and b
  3. Only b
  4. Only b and c
  5. Only c
Question 19 Multiple Choice (Single Answer)

Match the following:

 
a. Leucoplasts 1. They are the colourless plastids.
b. Chloroplasts 2. They are the coloured plastids (except green-coloured).
c. Chromoplasts 3. They are the green-coloured plastids.
  1. a - 1, b - 2, c - 3
  2. a - 3, b - 1, c - 2
  3. a - 3, b - 2, c - 1
  4. a - 2, b - 3, c - 1
  5. a - 1, b - 3, c - 2
Question 20 Multiple Choice (Single Answer)

Golgi apparatus is not involved in the synthesis of which of the following?

a. Cell wall
b. Plasma membrane
c. Proteins
d. Lysosomes

  1. Only a, b and d
  2. Only b
  3. Only a and c
  4. Only c
  5. Only c and d
Question 21 Multiple Choice (Single Answer)

Match the following:

 
a. ER 1. It is a set of membrane-bounded, fluid-filled vesicles, vacuoles and flattened cisternae.
b. Golgi apparatus 2. It is the part of cell that occurs between the plasma membrane and nuclear envelop.
c. Cytoplasm 3. It is the membraneous network inside the cell enclosing a fluid-filled lumen that almost fills up the intracellular cavity.
  1. a - 3, b - 2, c - 1
  2. a - 1, b - 3, c - 2
  3. a - 1, b - 2, c - 3
  4. a - 2, b - 1, c - 3
  5. a - 3, b - 1, c - 2
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