sample of science
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Our planet Earth is inhabited by so many different kinds of living organisms. Some living organisms are so small that hardly we can see them, whereas others are quite large. But, have you ever noticed why some living things look different from others? For example, a plant is very different from a cat. Similarly, a human being is not the same as a fish. This is because there is diversity among the living things. We can study different kinds of animals easily, if we group them on the basis of their similarities or differences. Overview M e a n d M y W o r l d 1 00
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Transcript of sample of science
Our planet Earth is inhabited by so many different kinds of living organisms. Some living organisms are so small that hardly we can see them, whereas others are quite large. But, have you ever noticed why some living things look different from others? For example, a plant is very different from a cat. Similarly, a human being is not the same as a fish. This is because there is diversity among the living things. We can study different kinds of animals easily, if we group them on the basis of their similarities or differences.
Overview
Me and My World
1
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A variety of living things
Mini world
Beach and reef (watery world)
Depend on each other
Useful and harmful microbes
Our food choices
We grow and change
Similarities and differences
UnitMe and My World
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1.1 A variety of living things
Living things are diverse in nature Living things can be divided into variety of groups—plants, animals,
fungi and bacteria Five kingdoms of living things
There are many types of living things on our planet Earth. These living things are also called as organisms. Scientists have estimated that there are about 10 to 100 million different kinds of organisms on the Earth, out of which, only 2 million organisms have been discovered and studied so far. With every passing day, many new organisms are being discovered. With this growing diversity in organisms, it will become difficult for us to study them. Therefore, scientists classify organisms based on their similarities or differences. Classification means grouping things according to similarities and differences. It helps us to study things in an organized manner.
Apart from the plants and animals, what organisms can you see in the above picture? Circle them.There are some organisms which cannot be seen with naked eye, such organisms are called microorganisms. Sometimes, you fall ill due to infection, this infection is caused by microorganisms. These microorganisms
Diversity in living things
Do Activity 1.1a
Living things
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Plants Animals Fungi Protists Monera
Living organisms can be broadly classified into five kingdoms.
can be present in food, unclean water, etc. Bacteria and viruses are two such microorganisms which can enter our body and make us sick.
Do Activity 1.1b
Bacteria and viruses Fungi present on bread slice
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We know how plants and animals are different from one another. But, can you tell how fungi and bacteria are different from one another. Find out the answer and hold a class discussion on the same.
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