"Insects" Let's raise silkworms PPT courseware

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"Insects" Let's raise silkworms PPT courseware

Butterfly

Comparing the lives of butterflies, silkworms, bees and other animals, are there any similarities in their lives?

This kind of change that occurs in animals such as silkworms and butterflies during their lifetime is called metamorphosis.

compare their bodies

Observe how many parts the bodies of silkworm moths, dragonflies, locusts, and ants are made of. What do each part look like? How are their bodies similar?

Insects

For animals such as silkworm moths, dragonflies, locusts, and ants, the adult body is divided into three parts: head, thorax, and abdomen (fù). The head has mouthparts and a pair of antennae, and the thorax has three pairs of legs and usually two pairs of wings. Scientists call these animals insects.

Currently, there are about 1 million recognized insect species in the world, accounting for 2/3 to 3/4 of the known animal species.

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Update Time: 2024-11-08

This template belongs to science courseware Hunan Education Edition Third Grade Science Volume 2 industry PPT template

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