"The Life Cycle of Other Animals" Animal Life Cycle PPT Courseware 3

Description

"The Life Cycle of Other Animals" Animal Life Cycle PPT Courseware 3

What are we going to do in this lesson?

Animals have life cycles, we need to understand them.

Different animals have different shapes, changes, and reproduction methods during their growth process, and their life spans are also different. We also need to know this.

According to research, a dog can live for more than ten years, a turtle can live for hundreds of years, and a butterfly can only live for a few months.

We find that animals have long and short lifespans, but eventually they all die.

So, do you know what growth periods they go through between birth and death? Why haven't these animals disappeared from our planet due to their deaths?

summary:

1. Animals go through growth periods such as birth, growth and development, reproduction, and death throughout their lives, which constitute the animal's life cycle.

2. The fundamental meaning of the recurring life cycle is to pass life from generation to generation and ensure the continuation of life.

The life cycle time is the lifespan of the animal.

Changes in living environment factors such as climate, food, and enemies will have a greater impact on the lifespan of animals.

The sword bamboo dies - the giant panda dies

Water pollution – fish kills

The life cycle of animals goes through:

Birth - Growth and Development - Reproduction - Death

But what are the similarities and differences in the life cycles that animals go through?

Some animals change greatly throughout their lives, while others change little.

Different animals have different life cycles

Knowledge: Metamorphosis

Some animals look very different in their infancy and adulthood, changing from one form to another. This change is called metamorphosis.

Note: Many animals in nature undergo metamorphosis throughout their lives. For example, toads, do you know any other animals that undergo metamorphosis in their life cycle?

What is the biggest difference in their life cycles?

Chickens hatch from eggs. Simply put, they are oviparous.

Sheep are born directly from their mothers, which is simply called viviparous.

Let's classify animals according to this

think:

1. What stages do silkworms, pandas, flies and other animals go through in their lives?

Answer: They all go through growth periods such as birth, growth and development, reproduction, and death.

2. Why do animal species not become extinct as individuals age and die?

Answer: Because when animals grow to a certain period, they will reproduce through reproduction.

practise:

1. The starting point of human life cycle is ( )

A. Fetus B. Fertilized egg

C. Baby D. Egg cell

2. What processes does any life go through in sequence?

Answer: It has experienced the processes of birth, growth and development, reproduction and death.

3. Do you know how butterflies grow and develop? Look up information and draw a diagram of the growth and development process of a butterfly.

Operation

Reading textbook P39: Metamorphosis of insects

Provide study guidance

Preview Lesson 7 Our Life Cycle.

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For more information about the PPT courseware "The Life Cycle of Animals and the Life Cycles of Other Animals", please click the "Life Cycle of Animals ppt and the Life Cycles of Other Animals ppt" tags.

"The Life Cycle of Other Animals" Animal life cycle PPT download:

"The Life Cycle of Other Animals" Animal Life Cycle PPT Download Part One: Introduction of New Knowledge What is the life cycle of silkworms? Birth, Growth, Development, Reproduction, Death... The life cycle of other animals PPT, Part 2: Explanation of new knowledge...

"The Life Cycle of Other Animals" Animal Life Cycle PPT:

"Life Cycle of Other Animals" Animal Life Cycle PPT Part One: Observe and Understand the Life Cycle of Other Animals The life cycle of silkworms goes through four stages: birth, growth and development, reproduction, and death. The lives of other animals also go through such a process. ? ..

"The Life Cycle of Other Animals" Animal Life Cycle PPT Courseware 2:

"Life Cycle of Other Animals" Animal Life Cycle PPT Courseware 2 According to research, a dog can live for more than ten years, a turtle can live for hundreds of years, and a butterfly can only live for a few months. We find that animals have long and short lifespans, but eventually they all die. So..

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Update Time: 2024-09-28

This template belongs to science courseware Third Grade Science Volume 2, Textbook Edition industry PPT template

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