"Insect World under the Magnifying Glass" Micro World PPT

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"Insect World under the Magnifying Glass" Micro World PPT

Part One Content: Strange Body Structure

There are many kinds of insects in nature and they are widely distributed. They have different body structures and abilities from other animals.

Most insects are small and their body structure is difficult to see with the naked eye. Let's look at insects with a magnifying glass and see what we can find?

compound eye of fly

Observing under a magnifying glass, you can see that the fly's compound eyes are composed of many small eyes. The housefly has 4,000 small eyes. The structure of the small eyes is very delicate. Each small eye can only see part of the object. The whole eye looks like a patchwork of objects. Although the compound eyes of insects are composed of many small eyes, their vision is far less good than that of humans. Flies can only see 40 mm to 70 mm. However, insects are very sensitive to moving objects.

Cricket's "ears"

The cricket's listening ears are located on the tibia of the front legs and are a membrane-like structure called a tympanum. There are 100-300 sensory cells in the eardrum, which can quickly receive the sound signals such as summons, courtship, mating, attack, and alarm from the same species, and then respond.

butterfly wings

The wings of butterflies are densely covered with a layer of powder. If we touch it with our hands, powder will stick to it. These powders look like fish scales when viewed under a magnifying glass, and are called scales in entomology. These scales are actually flat fine hairs, embedded in the scale nests on the wing wax like fish scales, shining beautifully in the light.

PPT of the insect world under a magnifying glass, part 2: aphids and their natural enemies - lacewings

It is very interesting to observe the life of insects in nature. We might as well use a magnifying glass to observe how ladybugs prey on aphids and how aphids suck the sap of plants. We will definitely discover many secrets of the insect world that are invisible to the naked eye.

Aphids suck sap on the twigs of plants. Each aphid is only the size of a pinhole, and we can only see them as a dense mass with the naked eye. But under 10x magnification we can see their limbs clearly. See how they eat.

Lacewings and their larvae are natural enemies of aphids. Watch carefully how they prey on aphids.

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For more information about the PPT courseware "The World of Insects under the Magnifying Glass of the Tiny World", please click the "The World of Insects under the Magnifying Glass of the Tiny World ppt" ppt tag.

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Update Time: 2024-09-23

This template belongs to science courseware Science Edition for Sixth Grade Science Volume 2 industry PPT template

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