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"Insect World under the Magnifying Glass" Tiny World PPT Courseware 3
There are many kinds of insects in nature and they are widely distributed. They have different body structures and abilities from other animals.
However, most insects are small and their body structure is not easily visible to the naked eye. Let's take a look at the wonderful insect world under the camera lens!
strange body structure
The flies have claws, pads and sensory organs on their feet that help the fly crawl on various surfaces. The sensory organs can sense the subtle movement of the surrounding air and avoid danger.
What is the function of insect compound eyes?
The eyes of insects are divided into single eyes and compound eyes. The compound eyes are on both sides of the head. Observing under a magnifying glass, you can see that the compound eye is composed of many small eyes, each of which is hexagonal.
The structure of the ommatidia is very delicate. It has a light-gathering device like a convex lens, called a corneal lens, which is a hexagonal convex lens on the surface of the ommatidium, with a conical lens connected below. The optic nerve is connected below these light collectors. .
Interesting world of insects
It is very interesting to observe the life of insects in nature. We might as well use a magnifying glass to observe...
Classroom testing
1. Fill in the blanks
1. Under a magnifying glass, butterfly wings are composed of many colored ( ), these are actually ( ).
2. The fly’s eyes are ( ) and are composed of many ( ).
3. The cricket’s “ears” are on the ( ) side of its feet. The shapes of the antennae of different insects ( ), research shows that the antennae on the heads of insects are their ( ). They have a good sense of smell ( ).
4. Aphids like to suck ( ) on twigs, and the size of aphids is as large as ( ). The natural enemy of aphids is ( ).
2. Judgment
1. The fact that a fly does not fall on smooth glass is related to the structure of its feet. ( )
2. The sensitive sense of smell of many insects is related to their antennae. ( )
3. Generally, December is more suitable for observing aphids. ( )
4. With the help of a magnifying glass, we observe more private parts of the insect world. ( )
5. Under a magnifying glass, we found that the antennae of different insects have different shapes ( )
6. Cricket’s “ears” are the same as our human ears, growing on the head. ( )
7. Under a magnifying glass, we found that the dragonfly’s eyes are compound eyes. ( )
8. The fact that a fly will not slip on vertical smooth glass has something to do with its wings ( )
9. Butterfly wings are covered with small colorful scales, which are actually flat fine hairs. ( )
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"Insect World under the Magnifying Glass" Micro World PPT teaching courseware:
"The Insect World under the Magnifying Glass" Micro World PPT teaching courseware Part One: Questions before class 1. What is the magnifying glass also called? What are the characteristics of its lenses? 2. What does the magnification of a magnifying glass depend on? 3. What objects in life can also enlarge images? ..
"Insect World under a Magnifying Glass" Micro World PPT download:
"The World of Insects Under the Magnifying Glass" Micro World PPT Download Part One Content: Exploring New Knowledge (1) The peculiar body structure of a fly falls on the vertical smooth glass. Not only does it not slip down, but it can also crawl on it. This is consistent with the shape of its feet. related to structure. Fly's feet...
"Insect World under a Magnifying Glass" Micro World PPT:
"The World of Insects Under a Magnifying Glass" Micro World PPT Part One: Strange Body Structure Insects are of many types in nature and are widely distributed. They have different body structures and abilities from other animals. Most insects are small and difficult to see with the naked eye..