"It turns out to be interconnected" Biodiversity PPT download

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"It turns out to be interconnected" Biodiversity PPT download

Part 1: Importing new lessons

We know that many creatures have special morphological structures. The humps of camels, the wings of birds, the leaves of cactus degenerating into thorns... What makes these special structures unique?

It turns out to be interrelated PPTs. The second part is about learning new lessons.

The function of cactus spines

Because plants lose water mainly through the stomata on the leaves to exclude water vapor brought by the transpiration in the plant, and the leaves of the cactus have degenerated into thorns, so there are no organs that can remove water, so the natural water loss is very small. In addition, the roots of the cactus have super water-absorbing capabilities, and they can also absorb water from the air, so it can survive even if you don't water it.

The function of bird wings

Wings are the organs of flight for birds and insects. Insect wings can move in a coordinated manner and fly very efficiently. This is due to the small "interlock" between the powerful flight muscles and the hind wings. It can be folded on the back of the body when not in use, and the wings are generally triangular in shape. Birds have specially arranged flight feathers on their wings. When the wings are spread out, each feather has a slight ability to rotate. Therefore, the continuous flapping of the two wings up and down will generate huge downward pressure resistance, causing the bird to fly forward quickly.

The morphological structure of duckweed

Duckweed is a floating plant among aquatic plants, with a degraded root system and only one thin root.

It turns out to be interrelated PPT, the third part is: conclusion summary

1. Animals and plants have some special body structures adapted to their environment.

2. The morphological structure of living things is adapted to the environment in which they live.

It turns out to be interrelated PPT, the fourth part: classroom exercises

(1) Multiple choice questions

1. The leaves of a certain plant are very wide, which is conducive to the dispersion of water. This plant likes to live in ( ) areas.

A. Cold and dry B. Hot and rainy C. Hot and dry

2. The function of fish fins is ( )

A. Help the fish swim in the water B. Help the fish hunt in the water C. Help the fish float and sink in the water

(2) Judgment questions

1. After changing the environment, some plants cannot survive. ( )

2. The body structure and living habits of various animals are related to their living environment. ( )

3． The desert is dry and no plants grow. ( )

It turns out to be interrelated PPTs. The fifth part is content: Homework assignments.

Observe the physical characteristics of animals and plants in life, and think about what kind of environment they are related to? Why are people divided into yellow, black, and white races, and what environmental conditions are they related to?

Keywords: Free download of the Chinese PPT courseware for the first volume of the sixth grade in the textbook version. It turns out to be interconnected PPT downloads, biological diversity PPT downloads, .PPT format;

For more information about the PPT courseware "Biological Diversity Turns Out to Be Interrelated", please click the "Biological Diversity ppt turns out to be interrelated" ppt tag.

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Update Time: 2024-06-27

This template belongs to science courseware Science Edition for Sixth Grade Science Volume 1 industry PPT template

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