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Cell Structure and Functions Class 8 MCQs Questions with Answers
Solving the Cell Structure and Functions Multiple Choice Questions of Class 8 Science Chapter 8 MCQ can be of extreme help as you will be aware of all the concepts. These MCQ Questions on Cell Structure and Functions Class 8 with answers pave for a quick revision of the Chapter thereby helping you to enhance subject knowledge. Have a glance at the MCQ of Chapter 8 Science Class 8 and cross-check your answers during preparation.
Question 1.
Largest cell visible to uniaded eye is:
(a) hen’s egg
(b) ostrich egg
(c) bactería cell
(d) nerve cell
Answer
(b) ostrich egg
Largest cell visible to unaided eye is ostrich egg.
Question 2.
Which of the following is not a major component of protoplasm:
(a) hydorgen
(b) nitrogen
(c) Sulphur
(d) oxygen
Answer
(c) Sulphur
Sulphur is not a major component of protoplasm.
Question 3.
The organelle present oiily in plants is:
(a) mitochondria
(b) chromosomes
(c) nucleus
(d) plastids
Answer
(d) plastids
The organelle present only in plants is plastids.
Question 4.
Which of the following is present only in plants:
(a) plasma membrane
(b) cell wall
(c) nucleo membrane
(d) cytoplasm
Answer
(b) cell wall
Cell wall is present only in plants. It is not present in animal cells.
Question 5.
Yolk is:
(a) small part of cell
(b) yellow part of egg
(c) white part of egg
(d) none of these
Answer
(b) yellow part of egg
Yolk is yellow part of egg.
Question 6.
The outermost layer of animal cell is:
(a) cell wall
(b) cell membrane
(c) nuclear membrane
(d) none of these
Answer
(b) cell membrane
Cell membrane is the outermost layer of animal cell.
Question 7.
The white part of egg is called:
(a) yolk
(b) albumen
(c) cytoplasm
(d) none of these
Answer
(b) albumen
The white part of egg is called albumen.
Question 8.
The shape of amoeba is:
(a) round
(b) regular
(c) irregular
(d) none of these
Answer
(c) irregular
The shape of amoeba is irregular.
Question 9.
The basic structural unit of living organisms is:
(a) cell
(b) tissue
(c) organ
(d) none of these
Answer
(a) cell
Cell is the basic structural unit of living organisms.
Question 10.
Is hen’s egg a single cell:
(a) no
(b) yes
(c) can’t say
(d) none of these
Answer
(b) yes
Yes, hen’s egg is a single cell.
Question 11.
Bacterial cell has a cell wall:
(a) yes
(b) no
(c) can’t say
(d) none of these
Answer
(a) yes
Yes, bacteial cell has a cell wall.
Question 12.
Which of the following cells are long in shape:
(a) nerve Cells
(b) muscle Cells
(c) fibre Cells
(d) all of these
Answer
(d) all of these
The nerve cells, muscle cells and fibre cells are long in shape.
Question 13.
A group of similar cells perfonning a specific function is called:
(a) organ
(b) tissue
(c) cell organalle
(d) none of these
Answer
(b) tissue
Tissue is a group of similar cells performing a specific function.
Question 14.
Cells without well-organised nucleus are called:
(a) prokaryotic cells
(b) eukaryotic cells
(c) cell
(d) none of these
Answer
(a) prokaryotic cells
Cells without Well-organised nucleus are called prokaryotic cells.
Question 15.
Eukaryotic cells are found In:
(a) all organisms
(b) bacteria and blue green algae.
(c) all organisms except bacteria and blue green algae
(d) none of these
Answer
(c) all organisms except bacteria and blue green algae
Eukaryotic cells are found in all organisms except bacteria and blue green algae.
Question 16.
Which of these is multicellular ?
(a) amoeba
(b) paramecium
(c) bacteria
(d) mushroom
Answer
(d) mushroom
Mushroom is multicellular whereas amoeba, paramecium and bacteria are unicellualr.
Question 17.
The organelle not present in an animal cell is:
(a) cell membrane
(b) nucleus
(c) mitochondria
(d) chloroplast
Answer
(d) chloroplast
Chloroplast is not present in an animal cell where as cell membrane, nucleus and mitochondria is present in animal cell. Chloroplast is present in plant cell.
Question 18.
Plant cell do not have:
(a) cell wall
(b) lysosome
(c) mitochondria
(d) cell membrane
Answer
(b) lysosome
Lysosome. Plant cell do not have lysosome. It has cell wall, mitochondria and cell membrane.
Question 19.
Chlorophyll is found in:
(a) chromoplast
(b) centrosome
(c) chloroplast
(d) leucoplast
Answer
(c) chloroplast
Chlorophyll is found in chloroplast.
Question 20.
Chlorophyll pigment is of:
(a) yellow colour
(b) green colour
(c) red colour
(d) white colour
Answer
(b) green colour
Chlorophyll pigment is of green colour.
Question 21.
The cell organelle relying energy from the food is:
(a) mitochondria
(b) golgi bodies
(c) endoplasmic reticulum
(d) ribosomes
Answer
(a) mitochondria
The cell organelle releasing energy from the food is mitochondria.
Question 22.
The outermost layer of plant cell is:
(a) cell wall
(b) cell membrane
(c) nuclear membrane
(d) none of these
Answer
(a) cell wall
Cell wall is the outermost layer of plant cell. Cell membrane is the outermost layer of animal cell.
Question 23.
The liquid substance inside the cell enclosed by the cell wall or plasma membranes is called:
(a) cytoplasm
(b) nucleoplasm
(c) protoplasm
(d) none of these
Answer
(a) cytoplasm
Cytoplasm is the liquid substance inside the cell enclosed by the cell wall or plasma membranes.
Question 24.
The green plastids in plants are called:
(a) nucleoplasts
(b) chloroplast
(c) leucoplasts
(d) none of these.
Answer
(c) leucoplasts
The green plastids in plants are called chloroplasts.
Question 25.
Power house of the cell is:
(a) nucleus
(b) chloroplast
(c) cytoplasm
(d) mitochondira
Answer
(d) mitochondira
Mitochondria is the power house of the cell.
Question 26.
The liquid substance present between the nucleus and plasma membrane is called:
(a) cytoplasm
(b) protoplasm
(c) nucleoplasm
(d) none of these
Answer
(a) cytoplasm
The liquid substance present between the nucleus and plasma membrane is called cytoplasm.
Question 27.
The organelle present in the nucleus which help in transfer of characters from parents to next generation is:
(a) chromatin
(b) chromosome
(c) centromere
(d) none of these
Answer
(b) chromosome
Chromosomes present in the nucleus helps in transfer of characters from parents to next generation.
Question 28.
Cell was discovered by:
(a) Robert Brown
(b) Robert looke
(c) M.J. Schleiden
(d) T. Schwan
Answer
(b) Robert looke
Robert Hooke discovered cell.
Question 29.
The controlling centre of the cell is:
(a) protoplasm
(b) plastids
(c) nucleus
(d) chromosomes
Answer
(c) nucleus
The controlling centre of the cell is nucleus.
Question 30.
The life giving substance in a cell is:
(a) cytoplasm
(b) protoplasm
(c) nucleoplasm
(d) none of these
Answer
(b) protoplasm
Protoplasm is the life giving substance in a cell.
Match the Column-A with Column-B:
Question 1.
| Column-A | Column-B |
| (a) Cell wall | (i) Eukaryfotic cells |
| (b) Nuclear material without nuclear membrane | (ii) Nucleus |
| (c) Nucleus with a nuclear membrane | (iii) Chromosomes |
| (d) A small spherical body in the nucleus | (iv) Prokaryotic cells |
| (e) Thread like structures present in nucleus | (v) Plant cells |
Answer
| Column-A | Column-B |
| (a) Cell wall | (v) Plant cells |
| (b) Nuclear material without nuclear membrane | (iv) Prokaryotic cells |
| (c) Nucleus with a nuclear membrane | (i) Eukaryfotic cells |
| (d) A small spherical body in the nucleus | (ii) Nucleus |
| (e) Thread like structures present in nucleus | (iii) Chromosomes |
Question 2.
| Column-A | Column-B |
| (a) Red blood cells | (i) Long branched shape |
| (b) Muscle cells | (ii) Spherical shape |
| (c) Nerve cells | (iii) Spindle shaped |
Answer
| Column-A | Column-B |
| (a) Red blood cells | (ii) Spherical shape |
| (b) Muscle cells | (iii) Spindle shaped |
| (c) Nerve cells | (i) Long branched shape |
Question 3.
| Column-A | Column-B |
| (a) Plastids | (i) Protoplasm |
| (b) Small vacuoles | (ii) Mitochondria |
| (c) Living substance of the cell | (iii) Plant cells |
| (d) Power house of cell | (iv) Animal cells |
Answer
| Column-A | Column-B |
| (a) Plastids | (iii) Plant cells |
| (b) Small vacuoles | (iv) Animal cells |
| (c) Living substance of the cell | (i) Protoplasm |
| (d) Power house of cell | (ii) Mitochondria |
State whether the following statements are True or False:
Question 1.
Amoeba has regular shape.
Answer
False
Question 2.
All living organisms are made of cells.
Answer
True
Question 3.
Muscle cells are branched.
Answer
False
Question 4.
Unicellular organisms have one-celled body.
Answer
True
Question 5.
A dense round region present in the middle of the cell is called nucleus.
Answer
True
Question 6.
All animal cells are spherical or oval in shape while plant cells are rectangular.
Answer
False
Question 7.
Most of the cells have nucleus.
Answer
False
Question 8.
Mitochondria is called powerhouse of the cell.
Answer
True
Question 9.
The basic living unit of an organism is an organ.
Answer
False
Question 10.
The outermost covering in an animal cell is called cell wall.
Answer
False
Question 11.
Green plastids containing chlorophyll are called chloroplasts.
Answer
True
Question 12.
Cells without well-organised nucleus, i.e. lacking nuclear membrane, are called eukaryotic cells.
Answer
False
Question 13.
All organisms are made of smaller parts called organs.
Answer
True
Question 14.
The egg of a hen is a single cell.
Answer
True
Question 15.
Life of all organisms starts as a single cell called fertilized egg.
Answer
True
Fill in the blanks:
Question 1.
……………………….. is formed by collection of tissues.
Answer
Organ
Question 2.
Empty space in the cytoplasm is called ………………………..
Answer
vacuole
Question 3.
Units of inheritance present on the chromosomes are called ………………………..
Answer
genes
Question 4.
The living substance in the cell is called ………………………..
Answer
protoplasm
Question 5.
A group of cells is called ………………………..
Answer
tissues
Question 6.
……………………….. are green plastics.
Answer
Chloroplasts
Question 7.
……………………….. is necessary for photosynthesis.
Answer
Chlorophyll
Question 8.
Component present in the cytoplasm are called ………………………..
Answer
organelle
Question 9.
The ……………………….. is the control centre of the cell.
Answer
nucleus
Question 10.
Cell wall is found in ……………………….. cell.
Answer
plant
Question 11.
The structural and functional unit of life is ………………………..
Answer
cell
Question 12.
Energy is produced in …………………………
Answer
mitochondria
Question 13.
……………………….. is the instrument which enlarge objects.
Answer
Microscope
Question 14.
……………………….. are responsible for passing hereditary characters.
Answer
Chromosomes
Question 15.
Nucleus is separated from cytoplasm by a ……………………….. , ………………………..
Answer
nuclear membrane
Question 16.
Cells were discovered by ………………………..
Answer
Robert Hooke
Question 17.
Coloured bodies called ……………………….. are found in the plant cells only.
Answer
plastids
Question 18.
The projections which appear and disappear as amoeba moves or feeds are called ………………………..
Answer
pseudopodia
Question 19.
All organisms other than bacteria and blue green algae are called …………………………
Answer
eukaryotes
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