Living Creatures: Exploring their Characteristics

Living and Non-living Things

This section introduces the fundamental distinction between living and non-living things by narrating a real-life incident involving Avadhi and Aayush. During a morning walk, Avadhi notices some shells and tries to pick them up. Her mother advises her not to, explaining that the shell might be the home of a living snail and is actually part of its body. Avadhi and Aayush are curious how a shell that does not move could be part of a living being. This curiosity leads to a classroom discussion initiated by their teacher about the differences between living and non-living things. The section encourages students to observe their surroundings, such as the pencil they hold, the book they read, or a pigeon near the window, and classify these objects as living or non-living based on their understanding. The activity involves listing objects in a table, guessing whether they are living or non-living, and providing reasons for their classification. This exercise helps students begin to think critically about the characteristics that define life and sets the stage for deeper exploration of living beings' traits. **Table on page 2 (6×5)** | --- | --- | --- | --- | --- | | Pencil | Non-living | | | | | Book | | | | | | Pigeon | Living | | | | | Car | | | | | | Plant | | | | | | Any other | | | | | **Table on page 7 (6×7)** | Pot with bean seeds | Availability of | | | Seed germination | | Possible reason for the observation | | --- | --- | --- | --- | --- | --- | --- | | | Air | Sunlight | Water | Prediction | Observation | | | A: In direct sunlight and without water | | | No | | | | | B: In direct sunlight and excess water | | | | | | | | C: In complete dark and moist soil | | | | | | | | D: In direct sunlight and moist soil | | | | | | | **Table on page 11 (8×6)** | Beakers | Direction of sunlight | Direction of plant | Direction of growth of root and shoot | | | | --- | --- | --- | --- | --- | --- | | | | | Shoot/ Root | Predictions | Observations | | A | All directions | Upright | Shoot | | | | | | | Root | | | | B | All directions | Inverted | Shoot | | | | | | | Root | | | | C | Only from one direction | Upright | Shoot | | | | | | | Root | | | **Table on page 13 (4×3)** | Date | Observations | Sketches | | --- | --- | --- | | | Seeds are sown | | | | | | | | | | **Table on page 18 (2×6)** | A | B | C | D | E | F | | --- | --- | --- | --- | --- | --- | | | | | It is similar to ‘C’ but it has two legs. | | | **Table on page 22 (5×5)** | S. no. | Does it grow? | Does it respire? | Example | Remarks | | --- | --- | --- | --- | --- | | 1. | No | No | | | | 2. | No | Yes | | | | 3. | Yes | No | | | | 4. | Yes | Yes | | |

• Living things possess certain characteristics that distinguish them from non-living things.
• Objects around us can be classified as living or non-living based on observation.
• A shell may appear non-moving but can be part of a living organism like a snail.
• Initial classification involves observation and reasoning about the nature of objects.
• The activity encourages students to list items and justify their classification.
• This section sets the foundation for understanding life characteristics.
• 📌 Living things: Organisms that show characteristics such as growth, movement, and reproduction.
• 📌 Non-living things: Objects that do not exhibit life processes.

What Sets the Living Apart from the Non-living?

This section explores the essential characteristics that differentiate living beings from non-living things. It begins by questioning whether movement alone can define life, noting that some non-living things like cars can move, while plants, which are living, do not move from place to place. The section encourages students to list tasks they can perform that a car cannot, such as growth and reproduction, to identify key life characteristics. It highlights that living beings show movement, but this movement is not always locomotion; plants exhibit movements like the opening of flowers and the trapping mechanism of insectivorous plants such as Drosera. Growth is another vital characteristic, demonstrated by comparing a child's growth over years. Nutrition is essential for growth and development, and breathing (respiration) is necessary for energy. The section explains respiration in animals and plants, noting stomata in leaves allow gas exchange. Excretion, the removal of waste, occurs in both animals and plants, exemplified by sweat in humans and water droplets on grass. Response to stimuli is discussed with examples like the touch-me-not plant folding its leaves and human reactions to pain. Reproduction is defined as the process of producing new individuals, necessary for continuity of life. The section concludes that living beings share characteristics such as movement, nutrition, growth, respiration, excretion, response to stimuli, reproduction, and eventually death. Absence of these indicates non-living status. Students are encouraged to fill the remaining columns of the earlier activity table with correct answers and reasons.

• Movement is a characteristic of living beings but not the sole criterion.
• Plants show movement, such as opening flowers and insect trapping.
• Growth is a universal feature of living beings.
• Living beings require nutrition for growth and development.
• Respiration occurs in all living beings, including plants via stomata.
• Excretion removes waste products from living organisms.
• Living beings respond to stimuli from their environment.
• Reproduction ensures continuity of life.
• Death occurs when living characteristics cease despite favorable conditions.