Class 8 Science Chapter 10 Cell – Structure and Functions Solutions | ASSEB Assam | English Medium

Class 8 Science Chapter 10 – Cell – Structure and Functions – All Textual Solutions | ASSEB Assam (English Medium)

Class 8 Science Chapter 10 – Cell – Structure and Functions Complete Textual Questions and Answers (ASSEB / SEBA Assam – English Medium)

Chapter 10 of the Class 8 Science curriculum, ‘Cell – Structure and Functions’, is a fundamental biology chapter that introduces students to the basic building blocks of life. These complete textual question-answer solutions (Class 8 Science Chapter 10 Textual Solutions) have been meticulously prepared based on the latest guidelines of the new ASSEB (Assam State School Education Board) syllabus and the National Education Policy (NEP). This comprehensive compilation includes textbook-based Very Short Answers (VSA), Short Questions, Long Answers, detailed comparisons, and key biological definitions. Ospin Academy provides these solutions in a simple, accurate, and completely exam-oriented format.

The chapter ‘Cell – Structure and Functions’ provides an in-depth understanding of the discovery of the cell by Robert Hooke, the variety in cell shape, size, and number, and the detailed parts of a cell. Students will learn about the cell membrane, cytoplasm, nucleus, and organelles like vacuoles and plastids. A critical part of this lesson involves the comparison between plant cells and animal cells, as well as understanding prokaryotic and eukaryotic cells. It is essential for students to thoroughly grasp these core concepts. Our textual solutions not only cover all the standard textbook exercises but also include important additional exam-oriented questions to ensure robust preparation.

What you will learn and get from these textual solutions:

• Clear explanations of why the cell is called the structural and functional unit of life.
• Accurate, point-wise answers for 1-mark objective questions (VSA) and 2-3 mark short textual questions.
• Standard and easy-to-understand explanations for descriptive questions, such as the functions of the nucleus and the location of chromosomes.
• Tabular comparisons between plant cells and animal cells for better clarity and higher exam scoring.
• Complete coverage of end-of-chapter exercises, fill-in-the-blanks, true/false questions, and biological sketches.
• Extra important questions aligned with the new syllabus structure alongside standard MCQ solutions.

Exclusive features of Ospin Academy’s solutions:

• Fully textbook-based answers formulated strictly according to the latest ASSEB new syllabus guidelines.
• 100% accurate, high-quality notes written in simple English language for effortless memorization and conceptual understanding.
• Concise summaries and targeted answers specifically designed for quick revision before examinations.
• A curated selection of highly probable extra questions to give students a competitive edge.

Committed to the academic excellence of students, Ospin Academy offers these high-quality textual solutions. Start your preparation today to master the concepts of Biology and achieve top scores in your upcoming examinations.

Class 8 Science

Chapter – 10                                     Ospin Academy

Cell-Structures and Functions

TEXTBOOK EXERCISES

Q. 1. Indicate whether the following statements are True (T) or False (F).

(a) Unicellular organisms have one-called body. (T/F)

Ans. True.

(b) Muscle cells are branched (T/F)

Ans. True.

(c) The basic living unit of an organism is an organ. (T/F)

Ans. False.

(d) Amoeba has irregular shape. (T/F)

Ans. True.

Q. 2. Make a sketch of the human nerve cell. What function do nerve cell perform?

Ans. Functions:

(i) Nerve cells help in the transfer of messages from various body parts to brain and brain to various parts of the body.

(ii) They help also in the coordination of the functions of the organs of the body.

Q. 3. Write short notes on the following:

(a) Cytoplasm.

Ans. Cytoplasm: Cytoplasm is a thick jelly-like fluid inside the cell membrane. All the life functions take place in the cytoplasm. There are many small cytoplasmic bodies in cytoplasm. These are called cell organelles. All organelles in cytoplasm play an active role in the functioning of the cell.

(b) Nucleus of a cell.

Ans. Nucleus of a Cell: Nucleus is a large, spherical organelle presents in all the cells. Nucleus controls all the activities of cell. It is surrounded by a thin membrane called nuclear membrane. In animal cells, the nucleus is present at the centre of the cell. However, in the case of plant cells, it is present at the periphery of the cells. The nucleus consists of a nuclear membrane, nucleoplasm, nucleolus and chromosomes.

Q. 4. Which part of the cell contains organelles?

Ans. Cytoplasm.

Q. 5. Make sketches of animal and plant cell. State three differences between them.

Ans.

Differences:

Animal Cell	Plant Cell
(i) Cell wall absent	Cell wall present.
(ii) Chloroplasts are absent	Chloroplast is present.
(iii) Centrosome presents near the nucleus	It has no centrosome.

Q. 6. State the differences between eukaryotes and prokaryotes.

Ans.

Prokaryotic Cell	Eukaryotic cell
1. Size: generally small (1-10) μm) 1 μm = 10-6 m.	1. Size: generally large (5-100 μm)
2. Nuclear region: poorly defined due to absence of nuclear membrane and known as nucleoid.	2. Nuclear region: well defined and surrounded by a nuclear membrane.

Q. 7. Where the chromosomes found in a cell? State their function.

Ans. Chromosomes are situated in nucleus of a cell.

They carry characteristics of parent cells to the daughter cells.

Q. 8. ‘Cells are the basic structural units of living organisms.’ Explain.

Ans. Cells are the basic structural units of living organisms because a lot of cells unit to form and many tissues form an organ. And organs combine to form a complete body, so the cell is the basic structural unit of an organism. All basic functions for the survival of an organism take place inside cells so they are the basic functional units of a living being.

Q. 9. Explain why chloroplasts are found only in plant cells?

Ans. Chloroplasts are only found in plant cells because they are required for the food making process of plants called photosynthesis.

Q. 10. Complete the following 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. Unit 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 space in the cytoplasm.

7. A group of cells.

Ans.