The Cell

Samacheer Book Back Questions And Answers For Science Standard 6 Term 2 “The Cell“

I. Choose the correct answer:
1. The unit of measurement used for expressing dimension (size) of cell is _____.
(a) Centimeter
(b) Millimeter
(c) Micrometer
(d) Meter

2. Under the microscope, Priya observes a cell that has a cell wall and a distinct nucleus. The cell that she observed is _____.
(a) a plant cell
(b) an animal cell
(c) a nerve cell
(d) a bacteria cell

3. A ‘control centre’ of the eukaryotic cell is _____.
(a) Cell wall
(b) Nucleus
(c) Vacuoles
(d) Chloroplast

4. Which one of the following is not a unicellular organism?
(a) Yeast
(b) Amoeba
(c) Spirogyra
(d) Bacteria

5. Most organelles in a eukaryotic cell are found in the
(a) Cell wall
(b) Cytoplasm
(c) Nucleus
(d) Vacuole

II. Fill in the Blanks:
1. The instrument used to observe the cell is _____.
2. I control the food production of a cell. Who am I? _____.
3. I am like a policeman. Who am I _____?
4. The Term “cell” was coined by _____.
5. The egg of an Ostrich is the _____ single cell.

Answers:
1. Microscope
2. Chloroplast
3. Cell membrane
4. Robert Hooke
5. Largest

III. True or False. If False, give the correct answer:
1. A cell is the smallest unit of life.
2. Nerve cell is the longest cell
3. Prokaryotes were the first form of life on earth.
4. The organelles of both plants and animals are made up of cells.
5. New cells are produced from existing cells.

Answers:
1. True
2. True
3. True
4. False (Organelles are found inside the cell)
5. True

IV. Match the following:
1. Control center                        A. Cell membrane
2. Food producer (Plant cell)      B.Mitochondria
3. Gate of the nucleus                C. Nucleus
4. Gate of the cell                       D. Chloroplasts
5. Energy producer                     E. Nuclear mem-brane

Answers:
1. C
2. D
3. E
4. A
5. B

V. Arrange in a correct sequence:
1. Elephant, Cow, Bacteria, Mango, Rose plant.
2. Hen Egg, Ostrich egg, Insect egg.

Answers:
1. Bacteria, Mango, Rose plant, Cow, Elephant.
2. Insect egg, Hen egg, Ostrich egg

VI. Analogy:
1. Prokaryote: Bacteria :: Eukaryote : _____.
2. Spirogyra: Plant cell :: Amoeba : _____.
3. Food producer: Chloroplasts :: Power house : _____

Answers:
1. Plants, Animals
2. Animal cell
3. Mitochondria

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