6th Science Guide Term 2 Lesson 5 The Cell

6th Standard Science Term 2 Book Back Answers Lesson 5 The Cell – English Medium

6th Standard Science Term 2 Lesson 5 The Cell Book Back Question and answers English Medium download pdf. 6th All Subject Text Books download pdf. 6th Science Term 1 Guide. 6th All Subject Book Back Answers. 

• 6th Science (TM&EM) Term 1, Term 2, Term 3 All Lessons Book Back  Answers – Click Here 

6th Science Guide Term 2 Lesson 5 The Cell

I. Choose the correct answer:

1. The unit of measurement used for expressing dimension (size) of cell is ____

1. centimeter
2. millimeter
3. micrometer
4. meter

Ans : micrometer

2. Under the microscope Priya observes a cell that has a cell wall and distinct nucleus. The cell that she observed is

1. a plant cell
2. an animal cell
3. a nerve cell
4. a bacteria cell

Ans : a plant cell

3. A ‘control centre’ of the eukaryotic cell is

1. Cell wall
2. Nucleus
3. Vacuoles
4. Chloroplast

Ans : Nucleus

4. Which one of the following is not an unicellular organism?

1. Yeast
2. Amoeba
3. Spirogyra
4. Bacteria

Ans : Spirogyra

5. Most organelles in a eukaryotic cell are found in the

1. Cell wall
2. cytoplasm
3. nucleus
4. Vacuole

Ans : cytoplasm

II. Fill in the blanks

1. The instrument used to observe the cell is _____Ans : Microscope
2. I control the food production of a cell. Who am I? ____Ans : chloroplast
3. I am like a policeman. Who am I ____? Ans : cell wall
4. The Term “ cell” was coined by ______Ans : Robert hooke
5. The egg of an Ostrich is the ___________ single cell.Ans : largest

III. True or False. If False, give the correct statement

1. A cell is the smallest unit of life.Ans : True
2. Nerve cell is the longest cellAns : True
3. Prokaryotes were the first form of life on earth.Ans : True
4. The organelles of both plants and animals are made up of cellsAns : False

• An : The organelles of both plants and animals are made up of membranes.

5. New cells are produced from existing cells.Ans : True

IV. Match the Following

1. Control center – Cell membrane
2. Food producer (Plant cell) – Mitochondria
3. Gate of the nucleus – Nucleus
4. Gate of the cell – Chloroplasts
5. Energy producer – Nuclear membrane

Ans : 1 – C, 2 – D, 3 – E, 4 – A, 5 – B         

V. Arrange in a correct sequence

1. Elephant, Cow, Bacteria, Mango, Rose plant

Ans : Bacteria, Rose plant, Mango tree ,Cow, Elephant.

2. Hen Egg, Ostrich egg, Insect egg

Ans : Insect egg, Hen Egg, Ostrich egg

VI. Analogy

1. Prokaryote : Bacteria :: Eukaryote :_______

Ans : Plant cell

2. Spirogyra : Plant cell :: Amoeba : ______

Ans : Animal cell

3. Food producer : Chloroplasts :: Power house :____

Ans : Mitochondria

VII. Give very short answer

1. Who discovered the cell in 1665?

• Robert hook

2. What type of cells do we have?

• Eukaryotic cell

3. What are the essential components of a cell?

• An outer cell membrane.
• A liquid cytoplasm.
• A nucleus.

4. What are the organelles found only in plant cell?

• Chloroplast, vacuoles

5. Give any three examples of eukaryotic cell?

• Plants, animals, most of the fungi and algae.

6. Which one is called as “Area of movement”?

• cytoplasam

7. Shiva said “ Bigger onion has larger cells when compared to the cells of smaller onion”! Do you agree with his statement or not ? Explain Why?

• I disagree. because the onion cells are same in size irrespective of size of onion.

VIII. Give short answer

1. Why cells are called building blocks of life?

• Like a brick wall, your body is composed of basic building blocks, and are named as “cells”.

2. Identify any four parts of the Plant cell.

3. Distinguish between prokaryotic and eukaryotic cells

4. Make sketches of animal and plant cells which you observe under microscope.

5. Write about the contribution of Robert Hooke in cell biology.

• The Englishman Robert hooke was a scientist, mathematician, and inventor. He improved microscope which was used in those days, and built a compound microscope.
• He placed water-lens beside the microscope to focus the light from an oillamp on specimens to illuminate them brightly. So that he able to see the minute parts of the objects clearly

6th Science Guide Term 2 Lesson 5 The Cell

IX. Answer in detail

1. Tabulate any five cell organelles and their function.

2. Draw a neat labelled diagram of a prokaryotic cell.

• The unicelluar organisms like Bacteria has Prokaryotic cells. It has No true nucleus. This type of nucleus is called as nucleiod. No nuclear membrane is around this nucleiod. These cells were the first form of life on earth. It is ranging from 0.003 to 2.0 micro meter in diameter.