Class 6 Science Chapter 10 Notes Living Creatures: Exploring their Characteristics
→ Movement: Change in the position from one place to another is called movement.
→ Growth: An increase in size, height and girth is referred to as growth. Growth is characteristic of all living things.
→ Nutrition: Nutrition is the process by which food is obtained by the organism to provide energy for the body.
→ Breathing: This is the process in which oxygen- rich air is inhaled and carbon dioxide-rich air is released out. Breathing is part of a process called respiration.
→ Excretion: The process of removal of waste substances from the body of a living being is called excretion.
→ Stimulus: Any thing or any event that prompts living beings to respond is called a stimulus.
→ Reproduction: Reproduction is the process by which living things produce more of their own kind. It is true for both animals and plants. It takes place in many different ways, for different organisms.
→ Some animals produce their young ones through eggs. Some animals give birth to the young ones.
→ Plants also reproduce. Many plants produce seeds which can germinate and grow into new plants.
→ Living Things: Objects which show some characteristics such as need of food, respiration, response to stimuli, movement, growth, and reproduction are called living things.
→ Non-living Things: Non-living things do not have life in them. They do not respire, reproduce, excrete and respond to stimuli.
→ Dead: When a living being is not able to exhibit any characteristics of living beings, despite the availability of all resources (like food, air and water) needed for being alive, it is said to be dead.
→ Essential Conditions for Germination: Germination of seeds depends upon the availability of water, air and suitable light and/or dark conditions. During germination of seeds, roots generally grow downwards, while shoots grow upwards.
→ Life Cycle of a Plant: A plant’s life cycle starts with seed germination, followed by several stages of its growth and development. These include flowering and seed production. Seeds produced during their life cycle would germinate into new plants and the cycle continues.
→ Life Cycle of Mosquito: Mosquitoes pass through four stages in their life cycle—egg, larva, pupa and adult. A mosquito begins its life as an egg, the egg develops into a larva, the larva grows into pupa, and the pupa transforms into an adult mosquito. The adult female mosquito lays eggs directly on or near water, and the cycle continues.
→ Life Cycle of Frog: There are four stages in the life cycle of a frog—the egg stage, the tadpole stage, the froglet stage, and the adult frog stage.
