The comprehensive approach in SCERT Class 6 Basic Science Textbook Solutions Chapter 6 Tiny Chambers of Life Important Questions ensure conceptual clarity.
Tiny Chambers of Life Extra Questions and Answers Class 6 Basic Science Chapter 6 Kerala Syllabus
Tiny Chambers of Life Class 6 Important Questions
Question 1.
A. Identify and name the animals in the given picture.
Answer:
1 – Paramecium, 2 – Euglena
B. Write the steps involved in the experiment to observe these organisms.
Answer:
Steps involved in the experiment to observe organisms:
- Collect a drop of water from a pond, field, or standing water using a dropper.
- Place the collected drop of water in the center of a clean glass slide.
- Gently cover the water on the slide with a cover slip. Place a part of the cover slip on the slide and gently lower it. This will avoid air bubbles.
- Place the prepared slide on the stage of the microscope and secure it with clips.
C. Some statements related to cells are given below. Complete the table by writing them in the correct column.
- Chloroplast is present.
- Small vacuole is present.
- No cell wall.
- Large vacuole is present.
| Plant cell | a. _____________ |
| b. _______ | c. _____________ |
| d. _______ | Small vacuole is present. |
Answer:
| Plant cell | Animal cell |
| Chloroplast is present | No cell wall. |
| Large vacuole is present. | Small vacuole is present. |
Question 2.
A. Observe the picture and identify the parts of the cells in an onion.
Answer:
1 – Cell wall, 2 – plasma membrane, 3 – Nucleus, 4 – Cytoplasm
B. Find the correct statements from the following.
a) The body parts of animals are made up of different types of cells.
b) The difference in the size of the cells is the reason for the difference in the size of the organisms.
c) Chloroplasts are found only in plant cells.
d) The parts of the plant are made up of the same type of cells.
Answer:
a), c)
C. Correct the incorrect statements.
Answer:
b) The difference in size of organisms is due to the difference in the number of cells, not the size of the cells.
d) The parts of the plant are made up of different types of cells.
D. Which is the central part that controls the functions of a cell?,
Answer:
Nucleus
Question 3.
Observe the picture given below.
A. Identify and name the organisms.
Answer:
Figure 1-Amoeba, Figure 2- Euglena
B. What is the common feature of these organisms?
Answer:
These organisms are unicellular. They have only one cell.
C. Describe the procedure for observing these organisms.
Answer:
Procedure for observing organisms:
- Objective: To observe microorganisms like Amoeba and Euglena.
- Materials required: Microscope, slide,
- Cover glass, straw soaked in water.
- Procedure: Take a drop of straw soaked in water on a slide. Place the cover glass and then observe through the microscope.
- Observation: We can observe microorganisms like Amoeba and Euglena.
Question 4.
A. Observe the pictures given below. Identify and name the unicellular organisms in them.
Answer:
b) Amoeba, c) Euglena
B. Which is the instrument used for observing microorganisms?
Answer:
Microscope
C. Compare the pictures and write down your three findings.
Answer:
Mycelia, cytoplasm, and cell wall are common to both cells. Although the cytoplasm is present in both cells, it differs in size: it is relatively small in animal cells and larger in plant cells. The presence of the cell wall and the chloroplast is seen only in plant cells.
Question 5.
A. Classify the following organisms into groups according to their characteristics.
| Egg, Paramecium, Amoeba, Ticks, cockroach, Euglena, mosquito, Ants |
Answer:
| Unicellular organisms | Multicellular organisms |
| Paramecium | Egg |
| Amoeba | Ticks |
| Euglena | Cockroach |
| Ants | |
| Mosquito |
B. Identify and name the pictures below. What factors helped you identify the pictures?
Answer:
Picture 1 – Animal cell, Picture 2 – Plant cell. Presence of cell wall and chloroplast, and the size of the vacuole in a plant cell.
C. Examine the statement and reason given below and choose the correct answer.
Statement: Each organelle inside the cells is different from each other in structure and shape. Reason: Each organelle has a different function to perform inside the cell.
a) The statement and reason are correct, and the reason is the correct explanation of the statement.
b) The statement and reason are correct, but the reason is not the correct explanation of the statement.
c) The statement is correct, but the reason is wrong.
d) The statement and reason are wrong.
Answer:
a) The statement and reason are correct, and the reason is the correct explanation of the statement.
Question 6.
Observe the pictures.
A) Identify and write what type of cells A and B are.
B) Identify and name parts i, ii, and iii.
C) What is the function of the cell membrane and vacuole in these cells?
Answer:
A) A-Animal cell. B – Plant cell
B) i – Nucleus, ii – Cytoplasm, iii – Vacuole
C) Cell membrane – covers the cell, Vacuole – stores water, salts, and waste products.
Question 7.
Observe the picture.
A. Identify the cells and write their names.
B. The parts of the cell and their characteristics are given in the table below. Match them appropriately and choose the correct option.
| Parts of the cell | Characteristics . |
| a) Cytoplasm | 1) Control the functions of a cell |
| b) Nucleus | 2) Helps in photosynthesis |
| c) Cell membrane | 3) Cell parts other than the nucleus are kept inside the cell. |
| d) Chloroplast | 4) Covers the cell |
A. a) – 3, b) – 1, c) – 4, d) – 2
B. a) – 1, b) – 4, c) – 3, d) – 2
C. a) – 2, b) – 3, c) – 1, d) – 4
D. a) – 4, b) – 2, c) – 1, d) – 3
C. Are different parts of a plant made of the same type of cells? Write an activity to prove this.
Answer:
A. Picture 1 – Cheek cell, Picture 2 – Nerve cell
B. A)
C. C. No. Different parts of a plant are made up of different types of cells.
Take a cross-section of a soft stem of a plant using a sharp blade. It should be thin and complete, place the section on a slide and observe it under a microscope. We can see different plant cells.
Question 8.
A) Below is a table of details prepared by a child comparing animal cells and plant cells. Complete the table by tilling in the parts of the cell
| No. | Parts of cell | Plant cell | Animal cell |
| 1. | Present | Present | |
| 2. | Large | Small | |
| 3. | Present | Absent | |
| 4. | Present | Present | |
| 5. | Present | Absent |
Answer:
| No. | Parts of cell | Plant cell | Animal cell |
| 1. | Nucleus | Present | Present |
| 2. | Vacuole | Large | Small |
| 3. | Cell wall | Present | Absent |
| 4. | Cytoplasm | Present | Present |
| 5. | Chloroplast | Present | Absent |
B) Do you agree with the following statements? Explain.
a) Hand lens, microscope, etc. can be used to observe cells.
b) All cells in an organism are of the same type.
c) The size of organisms varies due to the size of the cells.
Answer:
a) Hand lenses are not used to observe cells because a hand lens does not magnify objects very much. Therefore, we cannot see cells with a hand lens. Since most cells are too small to be seen with the naked eye, a microscope is used to observe cells. Microscope lenses are used to produce a magnified image of small objects that are not visible to the naked eye.
b) No, all cells in an organism are different types. Each cell has a specific function. An organism can have a single cell (unicellular) or cells of different numbers and types (multicellular).
c) No, the variation in the size of an organism depends on the number of cells in the body. Different cells have different sizes. As an organism grows, the size of each type of cell remains constant, but its number increases.
C) Amoeba, Paramecium, and Euglena are unicellular organisms. Why?
Answer:
Amoeba, Paramecium, and Euglena are organisms that have only a single cell. Therefore, they are called unicellular organisms.
Question 9.
A) What is meant by organ system?
Answer:
An organ system is a group of multiple organs that work together to perform a specific function.
B) Analyse the given statement and reason, and select the correct option.
Statement: All cells in the human body are roughly the same shape.
Reason: The human body is made up of about two hundred different types of cells, including nerve cells, blood cells, and muscle cells.
a) The statement and the reason are true, and the reason is the correct explanation for the statement.
b) The statement and the reason are true, but the reason is not the correct explanation for the statement.
c) The statement is true, but the reason is false.
d) The statement is false, but the reason is true.
Answer:
d) The statement is false, but the reason is true.
C) Write any three organ systems of the human body and their functions.
Answer:
- Digestive system: Digests food and absorbs nutrients. (Organs: stomach, intestines, liver).
- Respiratory system: Helps in breathing in and out (exchange of gases). (Organs: lungs, trachea).
- Circulatory system: Transports oxygen and nutrients throughout the body through the blood. (Organs: heart, blood vessels).
Question 10.
The teacher drew a picture of a plant cell and an animal cell on the board and asked them to write the similarities between them.
A) Are the two cells similar?
Answer:
No. Animal cells and plant cells are different. But both have some similar parts. They are the nucleus, cytoplasm, vacuole, and cell membrane.
B) Explain how cells, tissues, and organs are related.
Answer:
Cell: Cells are the basic building blocks of living things. Cells control all the functions of the body. Tissues: Groups of cells that are similar in shape and perform the same function are called tissues. For example, nerve cells form a nerve tissue.
Organs: Parts of the body that are made up of many tissues that work together to perform a specific function are called organs. For example, the liver and the heart.
C) What is meant by ‘Epithelial tissue’? What is its main function?
Answer:
Epithelial tissue: They are a group of cells that cover the body in animals. The skin is a group of these kinds of cells.
Main function: Protects the internal parts of the body, prevents damage and pathogens from the external environment, and sometimes performs functions such as secretion or absorption.
Question 11.
A) Give an example of an organ system. Name any two organs that are part of it.
Answer:
Organ system: Respiratory system Organs: Lungs, trachea
B) What are tissues? Give an example of each tissue in animals and plants.
Answer:
Tissues are groups of cells that are similar in shape and perform the same function.
Tissues in animals: In animals, various tissues are found to perform various functions, such as nerve cells forming nervous tissue, muscle cells forming muscle tissue.
Example: Epithelial tissues (cover the body like skin).
Tissues in plants: Various tissues like this are also found in plants. (For example: Meristematic tissues that help in growth).
C) How do muscle tissue and nervous tissue differ?
Answer:
Nerve cells combine to form nervous tissue, and muscle cells combine to form muscle tissue.