Chapter 10: Characteristics of Living Creatures
Comprehensive Exercise (Made for exam preparation)
Class 6 Science
Question 1: Choose the correct option (Multiple Choice Questions):
1. Which of the following is NOT a characteristic of a living being?
Answer: (C) They remain unchanged in size forever.
2. What is the jelly-like cluster of frog eggs found on the surface of pond water called?
Answer: (C) Spawn.
3. Which stage comes immediately after the egg stage in a mosquito's life cycle?
Answer: (A) Larva.
4. Which conditions are essential for the proper germination of a bean seed?
Answer: (B) Right amount of water and air.
5. Why is kerosene oil sprayed on stagnant water?
Answer: (C) To stop mosquito larvae from inhaling air.
Question 2: Fill in the blanks with the appropriate words:
- 1. All living beings respire, reproduce, excrete, respond to stimuli, and eventually die.
- 2. The entire process from a seed to a plant, and then to the next generation of seeds is called the life cycle of a plant.
- 3. Female mosquitoes are bloodsucking insects that transmit several diseases like malaria, chikungunya, and dengue.
- 4. Larvae of the silk moth secrete thread-like material which they wrap around themselves before changing into pupae.
- 5. When a seed turns into a sprout, it is said to have germinated.
Question 3: State whether the following statements are True or False:
- 1. A car is considered a living being because it can move on a road.
Answer: False (A car does not grow, respire, or reproduce). - 2. A snail's shell is non-living and is never a part of its body.
Answer: False (It is home to a living snail and is a part of its body). - 3. Tadpoles have a tail, which disappears as they grow into adult frogs.
Answer: True. - 4. Plants do not respond to sunlight because they cannot move from one place to another.
Answer: False (Plants do show movement by growing and responding to stimuli like sunlight). - 5. We should not allow water to stagnate in our surroundings to prevent mosquito breeding.
Answer: True.
Question 4: Match the items in Column 'A' with their correct description in Column 'B':
| Column 'A' | Column 'B' |
|---|---|
| 1. Seed | (a) Stage of a frog that has a tail |
| 2. Spawn | (b) Forms a thin layer over water to stop larvae from breathing |
| 3. Tadpole | (c) The first stage in the life cycle of a bean plant |
| 4. Pupa | (d) Stage that comes after larva in a mosquito's life cycle |
| 5. Kerosene oil | (e) A cluster of frog eggs |
Correct Matches:
- 1 → (c) The first stage in the life cycle of a bean plant
- 2 → (e) A cluster of frog eggs
- 3 → (a) Stage of a frog that has a tail
- 4 → (d) Stage that comes after larva in a mosquito's life cycle
- 5 → (b) Forms a thin layer over water to stop larvae from breathing
Question 5: Classification. Classify the following 5 items into "Living" and "Non-living":
Items: 1. A moving car, 2. A pigeon, 3. A wooden pencil, 4. A bean seed, 5. A book.
- Living: 2. A pigeon, 4. A bean seed (it has life and can germinate into a plant).
- Non-living: 1. A moving car, 3. A wooden pencil, 5. A book.
Question 6: Answer the following questions in one sentence:
1. What are the essential characteristics of living creatures?
Answer: Living creatures move, need food, grow, respire, reproduce, excrete, respond to stimuli, and eventually die.
2. What is a spawn?
Answer: A jelly-like cluster of frog eggs found on the surface of water is known as spawn.
3. Name the four stages in the life cycle of a silk moth.
Answer: The four stages are egg, larva, pupa, and adult.
4. What change occurs in a plant after the fruits containing seeds are formed and life activities end?
Answer: When all activities of life gradually come to an end, the plant is considered dead.
5. Which stage of a frog's life cycle looks like a small fish with a tail?
Answer: The tadpole stage of a frog looks like a small fish with a tail.
Question 7: Give scientific reasons:
1. Reason: A car moves on the road, but it is classified as a non-living thing.
Answer: Because unlike living beings, a car does not grow, need food, respire, reproduce, or respond to stimuli.
2. Reason: We are strictly advised not to allow water to stagnate in our surroundings.
Answer: Because stagnant water in coolers or open containers acts as a breeding ground for mosquitoes that transmit diseases like malaria and dengue.
3. Reason: Kerosene oil is often sprayed on stagnant water.
Answer: Because kerosene oil forms a thin layer over the water surface that separates water from air, which stops the larvae and pupae from inhaling air, causing them to die.
4. Reason: A dry bean seed is considered a living thing.
Answer: Because when a seed is provided with the right conditions like water and air, it germinates, grows into a new plant, and reproduces, showing characteristics of life.
5. Reason: Avadhi's mother asked her not to pick up the stationary shell.
Answer: Because the shell, even though it was not moving, is actually a part of a living snail's body and serves as its home.
Question 8: Answer the following questions in short (2-3 sentences):
1. What are the different stages in the life cycle of a bean plant?
Answer: The life cycle of a bean plant includes several stages: Seed, Seed germination, Appearance of leaves, Appearance of flowers, and finally Appearance of fruits (pods with seeds).
2. How is silk fabric produced from the silk moth?
Answer: In the life cycle of a silk moth, the eggs hatch into larvae. These larvae secrete a thread-like material and wrap it around themselves before becoming pupae. These thread-like fibres are used to make silk fabric.
3. How does a tadpole change into an adult frog?
Answer: The embryo develops into a tadpole with a tail. Over a few weeks, the tadpole grows legs, its tail disappears, and it becomes a froglet, which eventually matures into an adult frog.
4. How do plants show movement? Give an example.
Answer: Even though plants do not move from one place to another like animals, their parts show movement by responding to stimuli. For example, the shoot of a plant grows and bends in the direction of sunlight.
5. How can you investigate the correct sequence of the larval and pupal stages of a mosquito?
Answer: We can take a container with both larvae and pupae, separate them into two different containers, and observe them daily. The one that changes into the other stage first will tell us the correct sequence of growth.