Chapter-Chapter 10. Living Creatures: Exploring their Characteristics Science Curiosity class 6 in english Medium CBSE Notes

Chapter 10. Living Creatures: Exploring their Characteristics

These CBSE Notes – Key Points are prepared according to the latest NCERT Curiosity textbook and the latest CBSE competency-based pattern. They provide a quick revision of important concepts, life processes, life cycles, seed germination, and scientific terms covered in the chapter.

CBSE Notes – Key Points

These notes are useful for quick revision before examinations. Read the important definitions, tables, scientific terms, and key facts carefully to strengthen your conceptual understanding.

Important Keywords

The following keywords are frequently used in this chapter and should be remembered carefully.

Keyword	Meaning
Living Organism	An organism that performs all life processes.
Non-living Thing	An object that does not perform life processes.
Growth	Permanent increase in the size of an organism.
Nutrition	Process of obtaining and using food.
Respiration	Process of releasing energy from food.
Excretion	Removal of waste materials from the body.
Reproduction	Production of young ones of the same kind.
Stimulus	Any change in the surroundings.
Response	Reaction of an organism to a stimulus.
Germination	Development of a seed into a seedling.
Life Cycle	Different stages in the life of an organism.

Characteristics of Living Organisms

All living organisms possess certain common characteristics that help us distinguish them from non-living things.

• Need food for energy.
• Grow and develop.
• Respire continuously.
• Remove waste materials.
• Respond to changes in the surroundings.
• Reproduce their own kind.
• Show movement.
• Have a definite life span.

Living and Non-living Things

The following table highlights the major differences between living and non-living things.

Living Things	Non-living Things
Grow naturally.	Do not grow naturally.
Respire.	Do not respire.
Need food.	Do not need food.
Respond to stimuli.	Do not respond.
Reproduce.	Cannot reproduce.

Life Processes

Life processes are the basic activities performed by all living organisms to survive.

Life Process	Function
Nutrition	Provides energy and nutrients.
Respiration	Releases energy from food.
Growth	Increases size and development.
Excretion	Removes waste materials.
Reproduction	Produces young ones.
Response	Helps organisms react to changes.

Seed Germination

Germination is the process by which a seed develops into a young plant under suitable conditions.

Conditions Required

• Water
• Air (Oxygen)
• Suitable Temperature

Note: Most seeds do not require sunlight for germination, but sunlight is necessary after germination for healthy growth.

Life Cycles

Every living organism passes through different stages from birth to death.

Organism	Life Cycle
Flowering Plant	Seed → Seedling → Adult Plant → Flower → Fruit → Seed
Mosquito	Egg → Larva → Pupa → Adult
Frog	Egg → Tadpole → Froglet → Adult Frog

Movement in Living Organisms

Movement is an important characteristic of living organisms.

• Animals move from one place to another.
• Plants also show movement, although they remain fixed in one place.
• Plant shoots grow towards light.
• Roots grow downward into the soil.
• The touch-me-not plant folds its leaves when touched.

Response to Stimuli

Living organisms respond to changes in their surroundings.

Stimulus	Response
Light	Plant shoot bends towards light.
Touch	Touch-me-not folds its leaves.
Heat	Animals move to cooler places.

Important Scientific Terms

Remember the following scientific terms for examinations.

Scientific Term	Meaning
Organism	A living thing.
Embryo	The young developing plant inside a seed.
Seedling	A young plant after germination.
Tadpole	The larval stage of a frog.
Larva	An immature stage in the life cycle of some insects.
Pupa	The stage between larva and adult mosquito.
Stomata	Tiny pores on leaves for exchange of gases.

Important Facts

Remember these important facts for examinations.

• Living organisms perform life processes.
• Growth alone is not enough to identify a living organism.
• Plants also respire and respond to stimuli.
• Water, air, and suitable temperature are necessary for seed germination.
• Sunlight is generally not required for germination but is essential for plant growth.
• Mosquitoes and frogs undergo different stages in their life cycles.
• Every living organism has a definite life span.
• Respiration takes place throughout life.
• Plants prepare their own food through photosynthesis.
• All living organisms eventually die.

Quick Revision

Revise these important points before your examination.

• Living things perform life processes.
• Non-living things do not perform life processes.
• Food provides energy for survival.
• Respiration releases energy from food.
• Excretion removes waste materials.
• Reproduction ensures continuity of species.
• Seeds require water, air, and suitable temperature for germination.
• Plants respond to light and touch.
• Every organism follows a life cycle.
• Living organisms can be identified by the combined presence of all life processes.

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