MCQ Questions for Class 8 Chapter 8 Cell Structure and Functions
MCQ Questions for Class 8 Science Chapter 8 Cell Structure and Functions with Answers
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Board CBSE
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TextBook NCERT
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CLASS Class 8
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SUBJECT Science
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CHAPTER Chapter 8
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SUBJECT Cell Structure and Functions
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Topic Multiple Choice Questions
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Also Visit: 1.MCQ Class 8 Science
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MCQ Questions for Class 8 Science Chapter 8 Cell Structure and Functions with Answers
Question 1.
Which is not a part of nucleus
(a) nuclear membrane
(b) Nucleoplasm
(c) cytoplasm
(d) Nucleolus
Answer
Answer 1:
(c) cytoplasm
Explanation: Nucleus has four parts, they are nuclear membrane, nucleoplasm, nucleolus and chromatin materials.
Question 2.
Which part of the cell separate the nucleus from cytoplasm
(a) cell wall
(b) nuclear membrane
(c) cell membrane
(d) none of the above
Answer
Answer 2:
(b) nuclear membrane
Explanation: A cell has three parts, cell membrane, cytoplasm and nucleus. Cytoplasm and nucleus together is called protoplasm. Cytoplasm and nucleus are separated by a nuclear membrane.
Question 3.
The threads like material in the nucleus is
(a) chromosomes
(b) nuclear membrane
(c) nucleoplasm
(d) endoplasmic reticulum
Answer
Answer 3:
(a) chromosomes
Explanation: Nucleus has four parts, they are nuclear membrane, nucleoplasm, nucleolus and chromatin materials or chromosomes. It carry genetic material called DNA.
Question 4.
Tissues are joined together to form
(a) cell
(b) organ
(c) organ systems
(d) organism
Answer
Answer 4:
(b) organ
Explanation: cells are combined to form tissue. Tissues are combined to form organs. Organs are combined to form an organ system. Organ systems combine to form organisms.
Examples of organs
Animals: heart, lung, kidney
Plants: leaf, flower
Question 5.
Cells are combined together to form
(a) tissues
(b) organs
(c) organ systems
(d) organisms
Answer
Answer 5:
(a) tissues
Explanation: Examples of tissues are xylem, phloem, convective tissues etc.
Question 6.
Organs are combined to form
(a) cell
(b) tissue
(c) organ system
(d) organism
Answer
Answer 6:
(c) organ system
Organs are combined to form an organ system. Example digestive system, circulatory system, vascular system.
Question 7.
Organ systems together to form
(a) tissues
(b) organs
(c) organism
(d) none of the above
Answer
Answer 7:
(c) organism
Explanation: plants and animals together are called organisms. That is plants are examples of organisms as well as animals are examples of organisms.
Question 8.
Among the following, in which nuclear membrane is absent.
(a) RBC
(b) WBC
(c) nerve cells
(d) none of the above
Answer
Answer 8:
(a) RBC
Explanation: immature RBC has nucleus but mature RBC does not have nucleus.
Question 9.
Name the brain of the cell
(a) cell
(b) mitochondria
(c) nucleus
(d) cytoplasm
Answer
Answer 9:
(c) nucleus
Explanation: Since all the metabolic activities in the cell are controlled by the nucleus, the nucleus is also called the brain of the cells.
Question 10.
Name the organelle which is only found in plants
(a) mitochondria
(b) nucleus
(c) ribosome
(d) plastids
Answer
Answer 10:
(d) plastids
Explanation: The organelle which is only found in plants is plastids. It contains green colour pigment called chlorophyll.
MCQ Questions for Class 8 Science Chapter 8 Cell Structure and Functions with Answers
Question 11.
Genes are found in
(a) chromosome
(b) mitochondria
(c) plastids
(d) ribosomes
Answer
Answer 11:
(a) chromosome
Question 12.
The organism which made up of only one cell is called
(a) unicellular organism
(b) multicellular organism
(c) animals
(d) plants
Answer
Answer 12:
(a) unicellular organism
The organism which made up of only one cell is called unicellular organism. Example: amoeba, euglena.
Question 13.
The organism which is made up of many cells is called
(a) unicellular organism
(b) multicellular organism
(c) animals
(d) plants
Answer
Answer 13:
(b) multicellular organism
Explanation: The organism which is made up of many cells is called multicellular organism. Example: mango plants, banyan plants, cow, goat.
Question 14.
Cell wall found in
(a) only plant cells
(b) only animal cells
(c) both plant and animal cells
(d) none of the above
Answer
Answer 14:
(a) only plant cells.
Cell wall found in only plant cells. The cell wall made up of cellulose. Cell wall is rigid, nonliving and gives protection to the plant cells.
Question 15.
Cell wall is made up of
(a) cellulose
(b) Lipoprotein
(c) glucose
(d) none of the above
Answer
Answer 15:
(a) cellulose
Question 16.
Large vacuoles are found in
(a) plant cells
(b) animal cells
(c) both plant and animal cells
(d) none of the above
Answer
Answer 16:
(a) plant cells
Question 17.
The membrane of vacuole is called
(a) nuclear membrane
(b) cell membrane
(c) tonoplast
(d) none of the above
Answer
Answer 17:
(c) tonoplast
Question 18.
Cell membrane is also called
(a) nuclear membrane
(b) plasma membrane
(c) cell wall
(d) double membrane
Answer
Answer 18:
(b) plasma membrane
Explanation: Cell membrane is also called plasma membrane. It is living. Cell membrane found both plant and animal cells. Cell membrane made up of lipoprotein, it is elastic.
Question 19.
The structural and functional units of life is called
(a) nucleus
(b) protoplasm
(c) cell
(d) cell wall
Answer
Answer 19:
(c) cell
Since all organisms are made up of cells, the cell is called the structural unit of life.
And all the metabolic activities are performed in the cells, for unicellular organisms this occurs in that one cell or for multicellular organisms this metabolic activities performed by different cells. Hence cells are called functional units of life.
Question 20.
Example of largest cell is
(a) egg cell
(b) bacteria's cell
(c) ostrich's egg
(d) human cell
Answer
Answer 20:
(c) ostrich's egg
MCQ Questions for Class 8 Science Chapter 8 Cell Structure and Functions with Answers
Question 21.
Protoplasm means
(a) only cytoplasm
(b) only nucleus
(c) both cytoplasm and nucleus together
(d) none of the above
Answer
Answer 21:
(c) both cytoplasm and nucleus together
Explanation: Inside the cell membrane, both cytoplasm and nucleus together is called protoplasm. It is living.
Question 22.
The outermost part of animal cell is
(a) cell wall
(b) cell membrane
(c) nuclear membrane
(d) none of the above
Answer
Answer 22:
(b) cell membrane
Question 23.
The shape of the amoeba cell is
(a) oval
(b) cylindrical
(c) circular
(d) irregular
Answer
Answer 23:
(d) irregular
Question 24.
In a prokaryotic cell
(a) nuclear membrane bounded nucleus is present
(b) nucleus is not bounded by nuclear membrane
(c) nucleus is absent
(d) none of the above
Answer
Answer 24:
(b) nucleus is not bounded by nuclear membrane
Explanation: The cell in which the nucleus is not bounded by a nuclear membrane and also not well developed is called a prokaryotic cell.
The organism which has a prokaryotic cell is called prokaryote. Such types of organisms are unicellular. For example bacteria.
Question 25.
In a Eukaryotic cell
(a) nuclear membrane bounded nucleus is present
(b) nucleus is not bounded by nuclear membrane
(c) nucleus is absent
(d) none of the above
Answer
Answer 25:
(a) nuclear membrane bounded nucleus is present
Explanation: The cell which has a well developed nucleus with a nuclear membrane bounded is called Eukaryotic cell.
The organisms which have Eukaryotic cells are called eukaryotes. Such organisms may be unicellular or multicellular. For example euglena (unicellular), cow dog (multicellular).
Question 26.
Example of multicellular organism is
(a) amoeba
(b) paramecium
(c) bacteria
(d) volvox
Answer
Answer 26:
(d) volvox
Explanation: The organism which is made up of many cells is called multicellular organism.
Such organisms have Eukaryotic types of cells.
Question 27.
The organelle which is not present in plant cell is
(a) mitochondria
(b) nucleus
(c) lysosome
(d) plastids
Answer
Answer 27:
(c) lysosome
Question 28.
The green coloured chlorophyll present in
(a) chloroplast
(b) leucoplast
(c) chromoplast
(d) none of the above
Answer
Answer 28:
(a) chloroplast
Question 29.
The colour of the photosynthetic pigment is
(a) yellow
(b) blue
(c) orange
(d) green
Answer
Answer 29:
(d) green
The green colour pigment which is present in chloroplast is chlorophyll. During photosynthesis it absorbs sunlight and becomes activated and helps to prepare food.
MCQ Questions for Class 8 Science Chapter 8 Cell Structure and Functions with Answers
Question 30.
The organelle which helps produce energy from food is
(a) mitochondria
(b) nucleus
(c) lysosome
(d) ribosomes
Answer
Answer 30:
(a) mitochondria
Explanation: In mitochondria food is broken down and produces energy in the form of ATP. Because of this mitochondria is called the power house of the cell.
Question 31.
Name the power house of the cell
(a) nucleus
(b) chloroplast
(c) ribosomes
(d) mitochondria
Answer
Answer 31:
(d) mitochondria
Question 32.
Kitchen of the plant
(a) cell
(b) leaf
(c) flower
(d) fruit
Answer
Answer 32:
(b) leaf
Question 33.
The jelly like substance in which nucleus is present inside the plasma membrane
(a) nucleoplasm
(b) protoplasm
(c) cytoplasm
(d) none of the above
Answer
Answer 33:
(c) cytoplasm
Explanation: The jelly-like substance inside the cell membrane where all the cell organelles are present and all the cell activities are performed is called cytoplasm.
Question 34.
Cell was discovered by
(a) Robert Hooke
(b) Robert Brown
(c) Schleiden
(d) Schwan
Answer
Answer 34:
(a) Robert Hooke
Explanation: Robert Hooke in 1665 discovered the cell from a dead thin slice of cork under a simple magnifying device.
Question 35.
We see structure of cell using the device called
(a) Barometer
(b) Periscope
(c) Microscope
(d) Telescope
Answer
Answer 35:
(c) Microscope
Explanation: Using a microscope we see the very small structure clearly like a cell. The science of viewing small objects using a microscope is called microscopy.
Question 36.
The organelle which synthesis lipids is
(a) Golgi apparatus
(b) Smooth Endoplasmic Reticulum
(c) Rough Endoplasmic Reticulum
(d) Ribosomes
Answer
Answer 36:
(b) Smooth Endoplasmic Reticulum
Question 37.
Function of lysosome is
(a) helps in photosynthesis
(b) helps in protein synthesis
(c) give protection against the pathogens and digest the worn out cells
(d) helps store food
Answer
Answer 37:
(c) give protection against the pathogens and digest the worn out cells
Question 38.
The organelle which is called suicidal bag is
(a) ribosomes
(b) lysosome
(c) mitochondria
(d) nucleus
Answer
Answer 38:
(b) lysosome
Question 39.
It is a double-membraned cell organelle. It produces energy-rich molecules called ATP. It has its own genetic material. The organelle is
(a) Ribosomes
(b) Plastids
(c) Lysosome
(d) Mitochondria
Answer
Answer 39:
(d) Mitochondria
Question 40.
The nonliving part of the cell is
(a) mitochondria
(b) nucleus
(c) cell wall
(d) cell membrane
Answer
Answer 40:
(c) cell wall
MCQ Questions for Class 8 Science Chapter 8 Cell Structure and Functions with Answers
Question 41.
Pseudopodia is
(a) false eyes
(b) false feet
(c) false motion
(d) none of the above
Answer
Answer 41:
(b) false feet
Explanation: Amoeba have pseudopodia which produce by changing the concentration of the cytoplasm.
Question 42.
Ameboid motion shows by
(a) white blood cells
(b) red blood cells
(c) platelets
(d) heart
Answer
Answer 42:
(a) white blood cells
Question 43.
Which part of the cell helps in transferring the characteristics from parents to offspring
(a) mitochondria
(b) cell membrane
(c) chromosome
(d) ribosome
Answer
Answer 43:
(c) chromosome
Question 44.
The technique of colouring cellular components is called
(a) Dyeing
(b) Pigmenting
(c) Colouring
(d) Staining
Answer
Answer 44:
(d) Staining
Question 45.
Which of the following is not a postulate of cell theory?
(a) Cell is the basic unit of life.
(b) All cells develop from pre-existing cells.
(c) All living cells have cell walls.
(d) All living organisms are composed of cells.
Answer
Answer 45:
(c) All living cells have cell walls.
Question 46.
The control unit of cell is
(a) Nucleus
(b) Cell wall
(c) Cytoplasm
(d) All the above
Answer
Answer 46:
(a) Nucleus
Question 47.
Longest cells in human body is
(a) muscle cells
(b) nerve cells
(c) blood cells
(d) gland cells
Answer
Answer 47:
(b) nerve cells
Question 48.
Among the following, which type of tissues are the blood cells?
(a) muscle tissue
(b) connective tissue
(c) nervous tissue
(d) epithelial tissue
Answer
Answer 48:
(b) connective tissue
Question 49.
Which of the following is not present in nervous system
(a) brain
(b) nerve cells
(c) spine
(d) heart
Answer
Answer 49:
(d) heart
Question 50.
Energy currency of the cell is
(a) ATP
(b) FTP
(c) MTP
(d) ADP
Answer
Answer 50:
(a) ATP
Question 51.
Saclike structure helps in synthesis and storing many substances
(a) Mitochondria
(b) Endoplasmic reticulum
(c) Golgi apparatus
(d) cytoplasm
Answer
Answer 51:
(c) Golgi apparatus
Explanation: Golgi apparatus is also known as Golgi complex or Golgi body. It is an organelle that serves as a primary packaging area for molecules that will be distributed throughout the cell. It is located in the cytoplasm next to the endoplasmic reticulum and near the nucleus of the cell.
Question 52.
The organelle which helps in kill the germs and foreign particles
(a) ribosomes
(b) lysosome
(c) chromosome
(d) Golgi apparatus
Answer
Answer 52:
(b) lysosome
Question 53.
The organelle helps in cell division
(a) cytoplasm
(b) protoplasm
(c) centrosome
(d) ribosome
Answer
Answer 53:
(c) centrosome
Question 54.
Colourless plastids is
(a) chloroplast
(b) leucoplast
(c) chromoplast
(d) none of the above
Answer
Answer 54:
(b) leucoplast
Question 55.
Made up of cellulose
(a) cell membrane
(b) cell wall
(c) nuclear membrane
(d) none of the above
Answer
Answer 55:
(b) cell wall
Question 56.
The organelle which does not contain DNA
(a) mitochondria
(b) chloroplast
(c) nucleus
(d) lysosome
Answer
Answer 56:
(d) lysosome
Question 57.
Liquid connective tissue
(a) blood
(b) bone
(c) heart
(d) none of the above
Answer
Answer 57:
(a) blood
Question 58.
Which of the following cells can change its shape
(a) Egg cell
(b) Red blood cell
(c) White blood cell
(d) none the above
Answer
Answer 58:
(c) White blood cell
Question 59.
Robert Hooke discovered cell in
(a) mouth
(b) cork
(c) chick
(d) none of the above
Answer
Answer 59:
(b) cork
Question 60.
Amoeba and paramecium are the examples of
(a) unicellular organisms
(b) multicellular organisms
(c) first one is unicellular and second one is multicellular organism
(d) none of the above
Answer
Answer 60:
(a) unicellular organisms
MCQ Questions for Class 8 Science Chapter 8 Cell Structure and Functions with Answers
Question 61.
Pseudopodia helps the amoeba in
(a) collecting food
(b) movement
(c) both collecting food and movement
(d) none of the above
Answer
Answer 61:
(c) both collecting food and movement
Question 62.
Shape of cell is
(a) round and spherical
(b) elongated
(c) long and pointed at both ends
(d) all the above
Answer
Answer 62:
(d) all the above
Question 63.
Which cell receives and transfers messages, thereby helping to control and coordinate the working of different parts of the body
(a) Nerve Cells
(b) Muscle Cells
(c) blood cells
(d) none of the above
Answer
Answer 63:
(a) Nerve Cells
Question 64.
............ gives shape and rigidity
to these cells
(a) Cell membrane
(b) Cell wall
(c) Nucleus
(d) all the above
Answer
Answer 64:
(b) Cell wall
Question 65.
One millionth of a metre is
(a) Millimetre
(b) Micrometre
(c) Nanometre
(d) Centimetre
Answer
Answer 65:
(b) Micrometre
Question 66.
The kitchen of the cell is called
(a) Vacuoles
(b) Nucleus
(c) Cell wall
(d) Plastids
Answer
Answer 66:
(d) Plastids
MCQ Questions for Class 8 Science Chapter 8 Cell Structure and Functions with Answers
State whether the given statements are true or false:
Question 1.
The three main parts of a cell is cell membrane, cytoplasm and nucleus
Answer
Answer 1:
True
Question 2.
Cell membrane surround the cell wall
Answer
Answer 2:
False
Cell wall surround the cell membrane
Question 3.
A group of similar cells together to form organ
Answer
Answer 3:
False
A group of similar cells together to form tissue
Question 4.
When a group of organs combine to perform a particular function is formed organ system.
Answer
Answer 4:
True
Question 5.
Cells are different sizes and shapes.
Answer
Answer 5:
True
Question 6.
Plastids are found Only in animal cells.
Answer
Answer 6:
Plastids are found Only in plant cells.
Question 7.
Chromosome helps in photosynthesis
Answer
Answer 7:
Chlorophyll helps in photosynthesis
Question 8.
Nucleus is the control unit of the cell.
Answer
Answer 8:
True
Question 9.
The shape and size of a cell is related to its function.
Answer
Answer 9:
False
Question 10.
Cytoplasm and nucleus together to form nucleoplasm
Answer
Answer 10:
Cytoplasm and nucleus together to form protoplasm.
MCQ Questions for Class 8 Science Chapter 8 Cell Structure and Functions with Answers
Fill in the blanks with suitable word/s:
Question 1.
Cells are the __________ and __________ unit of all living organisms.
Answer
Answer 1:
Cells are the structural and functional unit of all living organisms.
Question 2.
Amoeba has __________ shape.
Answer
Answer 2:
Amoeba has irregular shape.
Question 3.
__________ and __________ together called protoplasm.
Answer
Answer 3:
Cytoplasm and nucleus together called protoplasm
Question 4.
__________ cells do not have a well-developed, membrane bounded nucleus.
Answer
Answer 4:
Prokaryotic cells do not have a well-developed, membrane bounded nucleus.
Question 5.
The part at the centre of the cytoplasm which controls all the activities of the cell is called __________.
Answer
Answer 5:
The part at the centre of the cytoplasm which controls all the activities of the cell is called nucleus.
Question 6.
The outermost part of an animal cell is __________.
Answer
Answer 6:
The outermost part of an animal cell is cell membrane
Question 7.
A group of tissues combined together to form __________.
Answer
Answer 7:
A group of tissues combined together to form organ.
Question 8.
__________ is the process of making food in green plants.
Answer
Answer 8:
Photosynthesis is the process of making food in green plants.
Question 9.
__________ and __________ are absent in animal cells.
Answer
Answer 9:
Cell wall and plastids are absent in animal cells.
Question 10.
__________ is the protein factory of the cell.
Answer
Answer 10:
Ribosome is the protein factory of the cell.
Match the items given in column I suitably with those given in column II
Question .
Answer
Answer :
MCQ Questions for Class 8 Science Chapter 8 Cell Structure and Functions with Answers
