"Observing the Growth of Mung Bean Sprouts" Biology and Environment PPT download

"Observing the Growth of Mung Bean Sprouts" Biology and Environment PPT download

Part One: Exploration Experiment

Experimental steps

1. Place two pots of mung bean sprouts, one in the sun and one in the dark.

Note: The number of mung bean sprouts in the two pots must be the same, and other conditions must be the same.

2. Observe the growth of two pots of mung bean sprouts.

3. Keep good records.

"Water requirements for the growth of mung bean sprouts"

experimental method

Spread several layers of absorbent paper on a plate, place 5 newly sprouted mung beans side by side on the absorbent paper, keeping one end of the absorbent paper moist. Observe what happens to the mung bean sprouts after a few days.

What was observed?

Through observation, it was found that the mung bean sprouts at the waterless end stopped growing, while the mung bean sprouts at the watery end grew very rapidly, and their roots all grew toward the water.

Observing the growth of mung bean sprouts PPT, part 2: discuss

Where do these three plants live? What is the relationship between their leaves and the environment in which they live?

Banana leaves are very broad and require a lot of water, so they grow in tropical rainforests with abundant rainfall.

It is native to the Ryukyu Islands and can be cultivated in the open field south of the Huaihe River in the Qinling Mountains of China. It is mostly cultivated in gardens and near farmhouses. The leaf fiber is the raw material of banana cloth (called kudzu) and is also used as a raw material for papermaking. The pseudostem is decoctioned to relieve fever. The pseudostem and leaves are diuretic (treating edema and anal distension). The flowers are dried and decoctioned to treat cerebral hemorrhage. The root and ginger, Decoction of licorice together can cure gonorrhea and diabetes, and cure colds, stomachache and abdominal pain.

There are nearly 80 kinds of pine trees in the world. Not only are there many types, but they are also widely distributed. For example, Pinus tabulaeformis, Pinus sylvestris, Pinus sylvestris and Pinus sylvestris are distributed in several provinces in North China and Northwest China. Huangshan pine, alpine pine, Bashan pine in the Qinba Mountains, Taiwan pine and North American shortleaf pine are mostly the main tree species for afforestation in barren mountains in my country.

Pine trees have slender, needle-shaped leaves that require more water, so they grow in areas with relatively high rainfall.

Observing the growth of mung bean sprouts PPT, part three: expansion and extension

Examples of plants adapting to their environment

In order to adapt to the watery environment of the seaside, mangroves have grown aerial roots so that the roots can be exposed to more air without being drowned. The numerous root systems reduce the impact of seawater.

In order to adapt to the underwater environment, lotus roots (lotus roots) are hole-shaped to prevent erosion by water flow, and the fibrous roots are very short to adapt to an environment with sufficient water in the water without requiring too much water.

Deciduous plants adapt to the winter and autumn seasons and shed their leaves in autumn to prevent excessive transpiration in winter.

Observing the growth of mung bean sprouts PPT, part 4 content: Class summary

Plant growth requires suitable environmental conditions.

When the environment changes, plants have a certain ability to adapt to the environment.

Observing the growth of mung bean sprouts PPT, Part 5: Inspection in the classroom

1. Fill in the blanks

1. The growth of mung bean sprouts requires ( ), ( ), ( ), ( ) and ( ).

2. The leaves of banana are very broad. Such leaves require a lot of water, so they grow in areas with abundant rainfall ( ).

3. Plant growth needs ( ).

2. Choice

1. Cactus lives in ( ).

A. Tropical rainforest areas B. Areas with more precipitation C. Dry deserts

2. There is a ( ) relationship between plants and the environment.

A. Interaction B. Non-interference C. Mutual influence

Observing the growth of mung bean sprouts PPT, part six: homework

With the help of some reading materials, give some examples of plants adapting to the environment.

Keywords: Free download of Chinese PPT courseware for the fifth grade in the textbook version, Observing the growth of mung bean sprouts PPT download, Biology and environment PPT download, .PPT format;

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