"Animals and Plants in a Day" A Day on Earth PPT Courseware 2

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"Animals and Plants in a Day" A Day on Earth PPT Courseware 2

think about it

What do we do at four o'clock every morning? Many animals and plants have already started their activities while we are still sleeping.

observe

Observe whether the morning glory changes throughout the day from morning to night? What's changed? What other changes in plants have we noticed throughout the day?

Tuberose, Epiphyllum, Luffa

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In his research on plants, Linnaeus observed that the flowers of some plants open and close at specific times. He cultivated such flowers in flower pots, and then placed them on his desk in the order of blooming morning and evening. Become a "flower clock" full of natural interest.

Why do plants bloom at different times?

It turns out that the flowering time of plants is closely related to temperature, humidity, and light.

Some flowers require insects to transmit pollen before they can produce seeds, and their flowering time often coincides with insect activity.

Diurnal periodicity:

Plant growth shows regular changes with the alternation of day and night, which is called diurnal periodicity. With the alternation of day and night, light, temperature, and water also change periodically, which affects the growth rate of plants.

think:

◎Is animal behavior affected by diurnal changes?

◎Observe various animals in life, what are their day and night behaviors like?

Learn and use now:

1. "______" uses the different opening and closing times of different flowers to tell time. Observe that the blooming time of sunflowers is ______ hour.

2. Through life experience, we know that animals such as ______ always come out during the day and animals such as ______ always come out at night.

3. Circadian rhythm refers to life activities that follow a cycle of ______.

4. Please write down what you know about the changes in plant behavior with day and night. ______ and other animals come out at night and sleep during the day. ______ blooms at night and closes during the day; ______ blooms during the day and closes at night.

5. The "Flower Clock" was discovered by ______.

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For more information about the PPT courseware "A Day on Earth: Animals and Plants in a Day", please click the "A Day on Earth ppt: Animals and Plants in a Day" ppt tag.

"Animals and Plants in a Day" A Day on Earth PPT Courseware 3:

"Animals and Plants in a Day" A Day on Earth PPT Courseware 3 Animals and Plants in a Day Think about it: What are you doing around 4 a.m. every day? Observe Morning Glory While we are still sleeping, many plants and animals have begun their activities. ..

"Animals and Plants in a Day" A day on earth PPT courseware:

"Animals and Plants in a Day" A Day on Earth PPT Courseware Think about it: What are you doing around 4 a.m. every day? Observe Morning Glory While we are still sleeping, many plants and animals have begun their activities. Please look at page 29 of the textbook and observe...

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Update Time: 2024-10-20

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

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