Class 9 Science MCQ Chapter 5 The Fundamental Unit of Life, Class 9 Science MCQ Question Answer, Class 9 Science Multiple Choice Question Answer to each chapter is provided in the list of SCERT Science Class 9 Objective Types Question Answer so that you can easily browse through different chapters and select needs one. Class 9 Science MCQ Chapter 5 The Fundamental Unit of Life Question Answer can be of great value to excel in the examination.
SCERT Class 9 Science MCQ Chapter 5 The Fundamental Unit of Life
SCERT Class 9 Science MCQ Chapter 5 The Fundamental Unit of Life Notes covers all the exercise questions in SCERT Science Textbooks. The NCERT Class 9 Science MCQ Chapter 5 The Fundamental Unit of Life provided here ensures a smooth and easy understanding of all the concepts. Understand the concepts behind every chapter and score well in the board exams.
The Fundamental Unit of Life
Chapter – 5
Multiple Choice Questions & Answers
1. Cork is a substance which comes from the bark of a –
Ans. (d) tree.
2. Which of the following organism is not unicellular organisms?
Ans. (c) fungi.
3. Unicellular freshwater organisms and most plant cells tend to gain water through.
Ans. (a) osmosis.
4. Osmosis uses in
(a) dead cells
(b) only living cells
(c) only plant cells
(d) only animal cells.
Ans. (b) only living cells.
5. Chromosomes are composed of
(c) DNA and protein
Ans. (c) DNA and protein.
6.Which of the following is not the examples of cell organelles?
(a) endoplasmic reticulum
(b) Golgi apparatus
Ans. (d) fat.
7. The ribosomes, which are present in –
(a) all active cell
(b) all dead cell
(c) active or dead cell
(d) only unicellular organism
Ans. (a) all active cell.
18. Complex sugar may be made from simple sugars in the –
(d) Golgi apparatus
Ans. (d) Golgi apparatus.
9. The Golgi apparatus involves in the formation of
Ans. (b) Lysosomes.
10. Suicide bags of a cell is –
(d) Golgi apparatus
Ans. (c) Lysosomes.
11. Plastids have their own –
(d) DNA and ribosomes.
Ans. (d) DNA and ribosomes.
12. ATP molecules are produced by
13. Which of the following can be created own proteins –
(a) Golgi apparatus
14. The internal organisation of the plastids consists of numerous membrane layers embedded in a material called –
Ans. (d) Stroma.
15. The central vacuole of some plant cells may occupy
(a) 50-90% of the cell volume.
(b) 40-80% of the cell volume.
(c) 50-80% of the cell volume.
(d) 50-70% of the cell volume.
Ans. (a) 50-90% of the cell volume.
16. The digestive enzymes are made by
Ans. (b) RER.
17. Food vacuole consists in
Ans. (c) amoeba.
Very Short Answer Type Questions
1. Who first discovered cells?
Ans. Robert Hooke first discovered cells.
2. What do you mean by osmosis?
Ans. Water also obeys the law of diffusion.The movement of water molecules through such a selectively permeable membrane is called osmosis.
3. What do you mean by hypotonic solution?
Ans. If the medium surrounding the cell has a higher water concentration than the cell, meaning that the outside solution is very dilute the cell will gain water by osmosis.
Such a solution is known as hypotonic solution.
4. What do you mean by isotonic solution?
Ans. The outside solution is very concentration, the cell will lose water by osmosis. Such a solution is known as isotonic solution.
5. Write an example of osmosis?
Ans. Absorption of water by plants roots is an example of osmosis.
6. What do you mean by endocytosis?
Ans. The flexibility of the cell membrane also enables the cell to engulf in food and other material from its external environment. Such process are known as endocytosis.
7. Write an example of an endocytosis.
Ans. Amoeba acquires its food through | endocytosis.
8. What do you mean by cell wall?
Ans. Plant, cell in addition to the plasma membrane, have another rigid outer covering called the cell wall.
9. How do form cell wall?
Ans. The plant cell wall is mainly composed of cellulose.
10. What do you mean by chloroplast?
Ans. In plants, the green granules are called chloroplast.
11. What is chlorophyll?
Ans. A green substance of plant is called chlorophyll.
12. What is called nuclear membrane?
Ans. The nucleus has a double layered covering is called nuclear membrane.
13. What is the full form of DNA?
Ans. Deoxyribo Nucleic Acid.
14. How such compose chromosome are?
Ans. Chromosomes are composed of DNA and protein.
15. What are called genes?
Ans. Functional Segments of DNA are called genes.
16. Write an example of organism which is no nuclear membrane?
17. What is called nucleoid?
Ans. An undefined nuclear region containing only nucleic acids is called a nucleoid.
18. What is called prokaryotes?
Ans. Organisms whose cells lack a nuclear membrane are called prokaryotes.
19. What is called eukaryotes?
Ans. Organisms, with cells having a nuclear membrane are called eukaryotes.
20. Write some important examples of cell organelles?
Ans. Endoplasmic reticulum, Golgi apparatus, lysosomes, mitochondria, plastids and vacuoles.
21. What is the full form of ER?
Ans. ER-Endoplasmic reticulum.
22. What is the full form of RER?
Ans. RER-Rough Endoplasmic Reticulum.
23. What is the full form of SER?
Ans. SER-Smooth Endoplasmic Reticulum.
24. What is the function of ribosomes?
Ans. The ribosomes, which are present in all active cells, are the sites of protein manufacture.
25. What is the function of SER?
Ans. SER plays a crucial role in detoxifying many poisons and drugs.
26. What is the function of Golgi apparatus?
Ans. Golgi apparatus functions include the storage, modification and packaging of products in vesicles.
27. What is the function of lysosomes?
Ans. Lysosomes are a kind of waste disposal system of the cell.
28. What is the suicide bag?
Ans. Lysosomes are also known as the suicide bage.
29. What is the full form of A.T.P.?
Ans. Adenosine triphosphate.
30. What is mitochondria?
Ans. Mitochondria are known as the power houses of the cell.
31. Which is known as the energy currency of the cell?
Ans. ATP is known as the energy currency of the cell.
32. Write two types of plastids.
Ans. Chromoplasts and leucoplast.
33. What do you mean by chloroplast?
Ans. Plastids containing the pigment chlorophyll are known as chloroplasts.
34. What do you mean by leucoplast?
Ans. Plastids containing colourless is called leucoplast.
35. What is the function of vacuoles?
Ans. vacuoles are storage sacs for solid or liquid contains.