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What's the wind of primary school science today? Teaching design
What's the wind today? The specific goals of Li Wangjun's education and teaching in Taoxi Primary School of Jintan are: 1. Be able to use senses and simple equipment to study the characteristics of wind; 2. Be able to use a variety of ways to express the observed phenomena. Knowledge and skills: 1. Know the characteristics of wind; 2. Be able to use some common materials to make wind vane
What are the characteristics of mesophyte leaves
Mesophyte is a terrestrial plant with the most species, the most extensive distribution and the largest number. It can not endure severe drought or long-term waterlogging, and can only live in the environment with moderate water conditions. Most of the plants on land belong to this kind. There are cuticles on the leaves, and palisade tissues are arranged orderly, The root system and transport tissue are more developed than those of hygrophytes, which can resist short-term drought. There are intercellular spaces in the leaves, and there is no complete ventilation system, so they can not live in the waterlogging environment for a long time. Some species live in the near hygrophytic environment, which is called hygrophytic mesophyte, such as coconut, water banyan, poplar, willow, etc, It is called xerophyte, such as locust, masson pine and Eucalyptus. In between, it is called true mesophyte, such as camphor, litchi, longan, etc
The function of plant lower epidermis cells
Transpiration, lower epidermis stomata, can reduce water loss
Also can photosynthesis, weaker
RELATED INFORMATIONS
- 1. The general characteristics of leaf epidermis cells are () A. The cells are colorless and transparent. There is cuticle on the outer wall. B. the cells are half moon shaped and contain chloroplasts. C. the cells are square and compact. D. the cells are cylindrical and contain chloroplasts
- 2. Angiosperms are classified according to which of the following characteristics () a, B, C, D, flowers and fruits
- 3. Answer the question according to the knowledge of plant classification: plants with roots, leaves, flowers and fruits are () plants, also known as () plants Plants with roots, stems, leaves, flowers and fruits are () plants, also called () plants. Plants with roots, stems, leaves and seeds have no flowers. Plants without fruits are () plants. Plants with only roots, stems and leaves are () plants. Plants with only stems and leaves are () plants. Plants whose organisms are directly composed of single cells or multi cells are () plants
- 4. The leaves of green plants are mostly green and flat, and the color of the upper epidermis is darker than that of the lower epidermis. There are many stomata on the leaf epidermis, which are the channels for the plant to lose water. The distribution of stomata on the upper epidermis is less than that of the lower epidermis? Acceptance in 30 minutes
- 5. The life of plants in the seventh grade Thank you, now! Help
- 6. Scientific knowledge in Grade Seven It is divided into several units, the first chapter is Star Tour, the second chapter is day and night and four seasons, and the third chapter is earth The fourth chapter is the changing topography, the fifth chapter is the organisms on the earth, the sixth chapter is the main groups of organisms, the seventh chapter is biodiversity, and the eighth chapter is the biosphere on the earth
- 7. What are the similarities and differences between animals and plants
- 8. Answers to lesson 1 of science homework a of PEP
- 9. The plant propagated by stem is (), the plant propagated by leaf is (), the plant propagated by root is () 1. Begonia, 2. Sweet potato, 3. Chlorophytum, 4. Soybean
- 10. Which plants are propagated by roots
- 11. Primary school science lesson plan: how do we hear the sound
- 12. What can family experiments do
- 13. Primary school science experiment Put a small balloon on the mouth of the empty bottle. First put it in hot water, then put it in cold water
- 14. Junior three science. About the problem of electric energy. Urgent Give some examples of the ways you know how to get electricity, and guess which form of energy they have
- 15. Student C: it is wrong to dip the pH test paper directly into the sodium chloride solution and compare the color displayed on the test paper with the standard colorimetric card. The pH = 7 is measured But why can't Oh test paper be directly immersed in sodium chloride solution Can pH test paper be reused
- 16. In the third grade of primary school, I wrote a composition,
- 17. Love science,
- 18. A cone with a bottom radius of 20cm and a height of 27cm and a cylindrical aluminum block with a bottom radius of 30cm and a height of 20cm are fused into a cylindrical aluminum block with a bottom radius of 15cm. What is the height of the cylinder?
- 19. The last question on page 136 of Tianfu mathematics
- 20. Answers to Tianfu mathematics Issue 8, 2010 In the triangle ABC, the angle BAC = 90 degrees, ad is the height on the BC side, e is a moving point on the BC side (not coincident with points B and C), EF is perpendicular to BC, eg is perpendicular to AC, and the perpendicular foot is f and g respectively (1) Verify eg / ad = CG / CD; (2) When connecting FD and DG, please judge whether FD and DG are vertical? If so, please give proof; (3) Is the triangle FDG isosceles right triangle when AB = AC? Why?