"Who Eats Who" Walking into the Woods PPT Courseware

Description

"Who Eats Who" Walking into the Woods PPT Courseware

Import new class:

Question:

There are many kinds of creatures in the woods. Can you choose a few and tell us what they eat?

On a hot summer day, with the scorching sun in the sky, a cicada slowly climbed up from the bottom of a big tree to a branch, sucking the sap while singing happily. Suddenly, a mantis was waving its "big scythe" and quietly came behind the cicada. However, at this moment, a yellow bird flew from a distance...

Please arrange them in the order of who was eaten by whom, and use arrows to indicate them.

Tip: Usually we use arrows to represent the relationship between eating and being eaten, and the arrow points to the strong one!

How to express this food connection between them?

There is always a relationship between eating and being eaten among living things. This relationship is like a chain that closely connects various living things and interlocks them. We call it a food chain.

In the food chain, plants can produce the nutrients they need and are called producers. Animals cannot produce nutrients themselves. They directly or indirectly use the nutrients produced by producers and are called consumers.

Class exercises

1. Which of the following food chains is written correctly ( )

A.Grass Rat Eagle

B.Grass Rat Eagle Bacteria

C. Grass, herbivorous insects, birds, snakes

D. Rat Snake Eagle

Class summary

food chain:

1. Start with production. .

2. Composed of producers and consumers, excluding decomposers.

3. Consumers and producers are the relationship between eating and being eaten, connected by arrows, and the arrows point to the eating creatures.

Food web: A network structure in which food chains are interconnected.

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"Who Eats Who" Into the Woods PPT Courseware 2:

"Who Eats Who" Into the Woods PPT Courseware 2 What is a food chain? The food connection between living things forms a relationship like a chain link, which is called a food chain. 1. Can you give some examples of food chains? Tree, cicada, oriole, grass, sheep, wolf, vegetable, insect, bird 2. What is a producer? ..

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Update Time: 2024-11-18

This template belongs to science courseware E-education edition fifth grade science volume 1 industry PPT template

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