Cell The Structural and Functional Unit of Life ICSE Class 10 Biology Board Exam Questions

Students should refer to Cell The Structural and Functional Unit of Life ICSE Class 10 Biology Board Exam Questions provided below with solutions. These will help the students to understand the type of questions which have been asked in previous year examinations and the type of solutions which the student should give to get good marks. You should also refer to ICSE Class 10 Biology Sample papers for more practice

ICSE Class 10 Biology Cell The Structural and Functional Unit of Life Important Questions

Students should learn the important questions and answers given below for Chapter Cell The Structural and Functional Unit of Life in Biology for ICSE Class 10. These board questions are expected to come in the upcoming exams. Students of ICSE Class 10th should go through the Important questions and answers ICSE Class 10 Biology which will help them to get more marks in exams.

Cell The Structural and Functional Unit of Life ICSE Class 10 Biology Board Exam Questions

Question: What are the characteristics of a cell organelle?
Ans. A cell organelle –
a. Is a membraned structure
b. Lies inside the protoplasm
c. Performs a specific function for the cell.

Question: Why are cells generally small in size?
Ans. Small size of the cell presents a large surface area to volume ratio.
The larger surface area of the cell ensures greater efficiency of the cell by providing.
a. large surface area for diffusion of nutrients.
b. greater diffusion of respiratory gases
c. easy repair to any damaged cell

Question: Drawn below is a diagram of a cell. Study the diagram and answer –

a. Label the parts marked 1 to 7.
Ans. 1. Cell Wall. 2. Cell membrane 3. Vacuole 4. Mitochondrion 5. Chloroplast 6. Nucleus 7. Golgi bodies

b. Is it a plant cell or an animal cell? State two reasons.
Ans. It is a plant cell. In plant cells, cell wall is present with a large vacuole whereas in animal cells, cell wall is absent with very few smaller vacuoles present.

c. State 2 differences between parts 1 and 2.

Ans.

d. State one functional activity of part 4 and 5 each.
Ans. Part 4 : In mitochondrion energy is produced in the form of ATP.
       Part 5 : In chloroplast, sunlight is traped to produce food (Glucose).

Question: Drawn below is a diagram of a cell. Study the diagram and answer.

a. Label the parts marked 1 to 10.
Ans. 1. Cell membrane                               2. Rough Endoplasmic reticulum 
       3. Smooth Endoplasmic reticulum    4. Centrioles
       5. Mitochondria                                 6. Chromatin fibre.
       7. Granules                                         8. Golgi body
       9. Nucleus                                          10. Cytoplasm

b. Name the structure which is called –
Ans. a. Brain of the cell       : Nucleus
b. Power-house of the cell   : Mitochondria
c. Suicidal bag in a cell       : Lysosomes

c. Is it a plant cell or an animal cell? Give 2 reasons.
Ans. It is an animal cell.
Reasons (i) cell wall is absent (ii) Do not contain plastids.

d. State the function of parts marked 1, 2 and 5.
Ans. 1. Cell membrane (plasma membrane) maintains shape of the cell ( in animal cells).
2. Rough endoplasmic reticulum helps in synthesis and transport of proteins and fats.
3. Mitochondria helps in release of energy from food in the form of ATP.

Question: Drawn below is the internal structure of a cell organelle. Study the diagram and
Ans..

a. Name the cell organelle.
Ans. Chloroplast.

b. What is the function of this cell organelle in a cell?
Ans. Chloroplast (green) trap solar energy for photosynthesis

c. Label the parts marked 1 to 6.
Ans. 1. Granum (in vertical section) 2. Stroma 3. Double membrane4. Thylakoids (Flattened sacs.) 5. Fret

Question: Name the Following :

Question: The organelle most vital for the survival of a cell.

Question: Structural and functional unit of an organism.

Question: Carbohydrate found as stored food in plant cell

Question: A jelly like substance within a cell.

Question: The protein factories of a cell.

Question: Cell organelle which traps solar energy.

Question: Site of cellular respiration in a cell

Question: An organelle associated with intra-cellular digestion.

Question: A prokaryotic cell.

Question: A polysaccharide found in the cell wall.

Question: Cell organelle which provides supportive framework.

Question: Non-living rigid layer which gives shape to a cell.

Question: The plastids found in the cells of yellow coloured petals.

Question: Carbohydrate found as stored food in an animal cell.

Question: A red coloured pigment which imparts colour to carrots.

Question: A cell which does not have nuclear membrane

Question: Minute holes in the nuclear membrane.

Question: Rod shaped bodies that initiate cell division

Question: A digestive enzymes found in the lysosomes.

Question: Colourless plastids which store carbohydrates.

Question: Fill in the blanks with organelle-function association.

Question:  _____________________________ inititation of cell division.

Question: Nucleus and _____________________________.

Question: Leucoplast and _____________________________.

Question: _____________________________ and digestive enzymes.

Question: _____________________________ and shape and rigidity to cell.

Question: Ribosomes and ___________________________ .

Question: _____________________________ and turgidity.

Question: ______________________________ and cellular respiration.

Question: Chloroplast and _____________________________.

Question: _____________________________ and secretion of hormones and enzymes.

Question: State one example for each of the following :

Question: A Mammalian cell without a nucleus. _____________

Question: A secretory product in a plant cell. ______________

Question: A plant cell which is enucleated. _______________

Question: The single largest cell in the world. ________________

Question: A Prokaryotic cell. _______________

Question: The longest cell in man. _______________

Question: A polysaccharide stored in an animal cell. ______________

Question: Waste product in a plant cell. ________________

Question: The smallest human cell. _________________

Question: A polysaccharide found in plant cell wall. _______________