NCERT Solutions for Class 8 Science Chapter 8 Cell Structure and Function

 

NCERT solutions for class 8 science chapter 8 cell structure and function: Have you ever seen the construction of a building? Obviously yes, then you must have noticed that bricks together form walls that further form rooms which turn into floors and then to a building. In the solutions for NCERT class 8 science chapter 8 cell structure and function, you will study about the structure and function of the cells. You can say that the smallest unit of a building is a brick. Similarly, the smallest structural and functional unit of living organisms is called ‘cell’. In this chapter, you will know how cells of prokaryotes are different from those of eukaryotes. After reading the details of prokaryotic and eukaryotic cells given in this chapter, you will be able to easily distinguish between prokaryotic and eukaryotic cells. After completing the chapter, go for NCERT exercise and to get correct and detailed answers refer to the NCERT solutions for class 8 science chapter 8 cell structure and function, to get an understanding of cells and its components. If you need help in finding solutions of NCERT book to any other class, then don't worry NCERT solutions will help you out.

                                                    cell

Basic components of a cell:

Cells are composed of different components that help a cell in performing essential functions of life. In chapter 8 Cell structure and function, you will study the details of the basic components of a cell. These important cell components are

  1. Cell wall

  2. Cell membrane

  3. Nucleus

  4. Mitochondria

  5. Endoplasmic reticulum

  6. Ribosomes

  7. Lysosomes etc.

CBSE NCERT solutions for class 8 science chapter 8 cell structure and function- Important topics are given below:

8.1 Discovery of cell

8.2 The cell

8.3  Organisms show variety in cell number, shape and size

8.4 Cell structure and function

8.5 Parts of the cell

8.6 Comparison of plant cell and animal cell

Among the topics given above, the most important ones from which questions can come are the definition of the cell, who discovered cell, different parts of the cell, differences between plant and animal cells etc. After going through the solutions for NCERT class 8 science chapter 8 cell structure and function, you must be able to understand all the answers the following questions:

NCERT solutions for class 8 science chapter 8 cell structure and function: Solved Exercise Questions:

CBSE NCERT solutions for class 8 science chapter 8 cell structure and function

Q2. Make a sketch of the human nerve cell. What function do nerve cells perform?

Answer:

Here is the sketch of the human nerve cell:

Image result for make a sketch of the human nerve cell NCERT

Function-

The nerve cell receives and transfers messages, thereby helping to control and coordinate the working of
different parts of the body.

Q3. Write short notes on the following.

(a) Cytoplasm

Answer:

Cytoplasm-The jelly-like substance between the nucleus and the cell membrane is called cytoplasm. nucleus. Various other components, organelles, of cells are present in the cytoplasm. These are mitochondria, Golgi bodies, ribosomes, etc.

Q3. Write short notes on the following.

(b) Nucleus of a cell

Answer:

Nucleus of the cell-

It is an important component of the living cell. It is generally spherical and located in the centre of the cell. the nucleus contains thread-like structures called chromosomes. These carry genes and help in inheritance or transfer of characters from the parents to the offspring.

Q4. Which part of the cell contains organelles?

Answer:

The cytoplasm is the part of the cell that contains organelles like are mitochondria, Golgi bodies, ribosomes, etc.

NCERT solutions for class 8 science chapter 8 cell structure and function:

Q5. Make sketches of animal and plant cells. State three differences between them.

Answer:

 

Differences between them- 

Plant cell-

  1. The cell wall is present
  2. the large size of vacuoles
  3. Plastides are present

Animal Cell-

  1. The cell wall is absent
  2. vacuole size is small as compared to plant cell
  3. No plastids, except for protozoan euglena

Q6. State the difference between eukaryotes and prokaryotes.

Answer:

Eukaryotes-

  • mostly are multicellular
  • the nucleus is well defined and surrounded by the nuclear membrane.
  • nucleolus is present
  • All organisms other than bacteria and blue-green algae are called eukaryotes.

Prokaryotes-

  • These are mostly unicellular
  • The nucleus of the bacterial cell is not well organised 
  • There is no nuclear membrane.
  • bacteria and blue-green algae are prokaryotes

Q7. Where are chromosomes found in a cell? State their function.

Answer:

Chromosomes (thread like structure) found inside the nucleus. It plays an important role.

These carry genes and help in inheritance or transfer of characters from the parents to the offspring

CBSE NCERT solutions for class 8 science chapter 8 cell structure and function:

Q8. ‘Cells are the basic structural units of living organisms’. Explain.

Answer:

The cell is the smallest unit of living organisms and is capable of all life functions. These are the building blocks of life. that's why cells are referred to as the 'basic structure and functional unit of life'.

Q9. Explain why chloroplasts are found only in plant cells?

Answer:

In a plant cell, green coloured plastids are called chloroplasts.

They provide green colour to the leaves.chlorophyll in the chloroplasts of leaves, is essential for photosynthesis. Since photosynthesis can perform by only plants so chloroplast is present in plants.

Q10. Complete the crossword with the help of clues given below.

Across

    1. This is necessary for photosynthesis.

    3. Term for component present in the cytoplasm.

    6. The living substance in the cell.

    8. Units of inheritance present on the chromosomes.

Down

    1. Green plastids.

    2. Formed by collection of tissues.

    4. It separates the contents of the cell from the surrounding medium.

    5. Empty structure in the cytoplasm.

    7. A group of cells.

 

Answer:

Across

    1. CHLOROPHYLL

    3. ORGANELLE

    6. PROTOPLASM

    8. GENES

Down

    1.CHLOROPLASTS

    2.ORGAN

    4. MEMBRANE

    5. VACUOLE

If you are facing any issue in understanding the answers of the above questions, then don't worry and again go through that NCERT Book and try to understand all the concepts of every topic and then write the answers of all these questions by your own and then compare them with NCERT solutions for class 8 science chapter 8 cell structure and function. You will see that your knowledge, as well as the understanding of these concepts, will increase and you will be able to explain the answers in a better way.

NCERT Solutions for Class 8 Science- Chapter-wise

Chapter 1

NCERT solutions for class 8 science chapter 1 Crop Production and Management

Chapter 2 

Solutions of NCERT  class 8 science chapter 2 Microorganisms Friend and Foe In Microorganisms

Chapter 3

CBSE NCERT solutions for class 8 science chapter 3 Synthetic Fibres and Plastics

Chapter 4

NCERT solutions for class 8 science chapter 4 Materials Metals and Non Metals

Chapter 5

Solutions of NCERT  class 8 science chapter 5 Coal and Petroleum

Chapter 6

CBSE NCERT solutions for class 8 science chapter 6 Combustion and Flame

Chapter 7

NCERT solutions for class 8 science chapter 7 Conservation of Plants and Animals

Chapter 8

Solutions of NCERT class 8 science chapter 8 Cell Structure and Functions

Chapter 9

CBSE NCERT solutions for class 8 science chapter 9 Reproduction in Animals

Chapter 10

NCERT solutions for class 8 science chapter 10 Reaching the Age of Adolescence

Chapter 11

Solutions of NCERT  class 8 science chapter 11 Force and Pressure

Chapter 12

CBSE NCERT solutions for class 8 science chapter 12 Friction

Chapter 13

NCERT solutions for class 8 science chapter 13 Sound

Chapter 14

Solutions of NCERT  class 8 science chapter 14 chemical effects of Electric Current

Chapter 15

CBSE NCERT solutions for class 8 science chapter 15 Some Natural Phenomena

Chapter 16

NCERT solutions for class 8 science chapter 16 Light

Chapter 17

Solutions of NCERT  class 8 science chapter 17 Stars and the Solar System

Chapter 18

CBSE NCERT solutions for class 8 science chapter 18 pollution of air and water

NCERT Solutions For Class 8: Subject-Wise

Benefits of NCERT solutions for class 8 science chapter 8 cell structure and function:

  • CBSE NCERT solutions for class 8 science chapter 8 cell structure and function will also boost your knowledge.
  • You will get all the answers to this chapter and it will help you to score good marks in your school exam.
  • NCERT solutions for class 8 science chapter 8 cell- structure and function will also help you to understand all the concepts easily.
  • NCERT is the base of your learning.
 

Recently Asked Questions

 

Related Articles

Exams
Articles
Questions