Cell Structure and Functions Class 8 MCQs Questions with Answers
I. Choose the correct option.
Question 1.
Nucleus is separated from cytoplasm by
(a) nuclear membrane
(b) nucleoplasm
(c) organs
(d) cell membrane
Answer
Answer: (a) nuclear membrane
Question 2.
The liquid material in the nucleus is
(a) chromosomes
(b) bacteria
(c) nucleoplasm
(d) nucleolus
Answer
Answer: (c) nucleoplasm
Question 3.
Tissues combine to form
(a) nucleus
(b) cells
(c) organism
(d) organs
Answer
Answer: (d) organs
Question 4.
Cells present in living organism differ in
(a) numbers
(b) shape
(c) size
(d) all of these
Answer
Answer: (d) all of these
Question 5.
Cells which lack nuclear membrane are
(a) eukaryotic cells
(b) prokaryotic cells
(c) single cells
(d) multicells
Answer
Answer: (b) prokaryotic cells
Question 6.
The control centre of all the activities of a cell is
(a) nucleus
(b) nucleoplasm
(c) cytoplasm
(d) organelles
Answer
Answer: (a) nucleus
Question 7.
The coloured organelles which are found in plants only are
(a) chlorophyll
(b) plastids
(c) vacuoles
(d) WBC
Answer
Answer: (b) plastids
Question 8.
Genes are located in
(a) chrpmosomes
(b) plastids
(c) cytoplasm
(d) lysosome
Answer
Answer: (a) chrpmosomes
Question 9.
A group of similar cells combine to form
(a) tissue
(b) organ
(c) organisms
(d) organelles
Answer
Answer: (a) tissue
Question 10.
The organism containing only a single cell is called
(a) unicellular organism
(b) multicellular organism
(c) organelle
(d) all of these
Answer
Answer: (a) unicellular organism
Question 11.
Cell walls is found in
(a) plant cells only
(b) animal cells only
(c) both (a) and (b)
(d) none of them
Answer
Answer: (a) plant cells only
Question 12.
The empty blank looking structures in the cytoplasm is
(a) vacuoles
(b) plastids
(c) plasma membrane
(d) nucleus
Answer
Answer: (a) vacuoles
Question 13.
The other name of cell membrane is
(a) plasma membrane
(b) cell wall
(c) nuclear membrane
(d) none of these
Answer
Answer: (a) plasma membrane
Question 14.
The basic structural and functional unit of all living organism is
(a) cell
(b) cell wall
(c) cell membrane
(d) chloroplasts
Answer
Answer: (a) cell
Question 15.
Chromosomes are found in
(a) nucleus
(b) nucleolus
(c) nucleoplast
(d) vacuole
Answer
Answer: (a) nucleus
II. Fill in the blanks with suitable word/s.
Question 1.
Cells are the …………….. unit of all living organisms.
Answer
Answer: basic
Question 2.
…………….. cells are branched.
Answer
Answer: Muscle
Question 3.
Amoeba has …………….. shape.
Answer
Answer: irregular
Question 4.
The …………….. cell transfers the messages.
Answer
Answer: nerve
Question 5.
…………….. is a group of tissues.
Answer
Answer: Organ
Question 6.
Protoplasm is …………….. inside the cell.
Answer
Answer: viscous fluid
Question 7.
Eukaryotes cells have a well-developed ……………..
Answer
Answer: nucleus
Question 8.
The jelly-like substance found between the nucleus and the cell-membrane is ……………..
Answer
Answer: cytoplasm
Question 9.
Nucleus is separated from the cytoplasm by ……………..
Answer
Answer: nuclear membrane
Question 10.
An …………….. is a group of organs.
Answer
Answer: organ system
Question 11.
…………….. are present in plant cells but …………….. in animal cells.
Answer
Answer: Plastids, absent
Question 12.
…………….. is the process of making food in plants.
Answer
Answer: Photosynthesis
Question 13.
…………….. is absent in animal cell.
Answer
Answer: Cell wall
Question 14.
The kitchen of plant cell is ……………..
Answer
Answer: plastid
Question 15.
…………….. is the power house of the cell.
Answer
Answer: Mitochondria
III. True or False
Question 1.
Cytoplasm is not a part of cell.
Answer
Answer: False
Question 2.
Cell wall surrounds the cell membrane.
Answer
Answer: True
Question 3.
A group of similar cells is called tissue.
Answer
Answer: True
Question 4.
Tissues combine to form an organism.
Answer
Answer: False
Question 5.
Cell are of different sizes.
Answer
Answer: True
Question 6.
Chloroplasts are blue in colour.
Answer
Answer: False
Question 7.
Plastid occur in plant cells only.
Answer
Answer: True
Question 8.
Chromosomes contain basic hereditary units called genes.
Answer
Answer: True
Question 9.
Nucleus is the control unit of cell.
Answer
Answer: True
Question 10.
The shape and size of cell is related to its function.
Answer
Answer: True
Question 11.
Organs make up tissues.
Answer
Answer: False
Question 12.
The cytoplasm and nucleoplasm make up the protoplasm.
Answer
Answer: True
Question 13.
The smallest unit of life is chloroplast.
Answer
Answer: False
Question 14.
Unicellular organisms have one-celled body.
Answer
Answer: True
Question 15.
The cell wall is living in nature.
Answer
Answer: False
IV. Match the following
| Column I | Column II |
| 1. Mitochondria | (a) Cell |
| 2. Functional unit of life | (b) Nucleus |
| 3. Control unit of cell | (c) Unicellular |
| 4. Single-celled organism | (d) Discovery of cell |
| 5. Robert Hooke | (e) Power house of a cell |
| 6. Combination of tissues | (f) Transfers messages |
| 7. Cytoplasm | (g) Jelly-like substance |
| 8. Nerve cell | (h) Forms organ |
| 9. Living substance in the cell | (i) Cell wall |
| 10. Outermost thick layer in plant cells | (j) Protoplasm |
Answer
Answer:
| Column I | Column II |
| 1. Mitochondria | (e) Power house of a cell |
| 2. Functional unit of life | (a) Cell |
| 3. Control unit of cell | (b) Nucleus |
| 4. Single-celled organism | (c) Unicellular |
| 5. Robert Hooke | (d) Discovery of cell |
| 6. Combination of tissues | (h) Forms organ |
| 7. Cytoplasm | (g) Jelly-like substance |
| 8. Nerve cell | (f) Transfers messages |
| 9. Living substance in the cell | (j) Protoplasm |
| 10. Outermost thick layer in plant cells | (i) Cell wall |
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