Question 2: What are the main tissues of plants? What are the five basic functions of plants (protection organization, transportation organization, storage organization, mechanical organization and meristem)?
Plant tissue is a structural unit composed of one or more cells from the same source and performing the same function. There are two main views on the classification of plant tissues. One is to explain plant tissues morphologically with an eye on the occurrence of tissues; First, focus on the differences in physiological functions and explain various tissues physiologically. In addition, some people use the classification of cell types instead of tissue types.
Protective tissue: a kind of tissue existing on the surface of plants, consisting of one or several layers of cells. It has the functions of preventing excessive transpiration of water and resisting external wind and rain, pests and diseases. According to the source, morphological structure and function of the protected tissue, it can be divided into primary protected tissue-epidermis and secondary protected tissue-cork layer.
Transport tissue: a tissue that transports substances in plants for a long distance. Its cells are long and tubular, and they are interconnected into a unified whole. According to the structure of transportation organizations and the different substances transported, it can be divided into two categories: conduits and tracheids for transporting water and inorganic salts, and sieve tubes and sieve cells for transporting organic assimilates.
Storage tissue: It is the tissue that stores secondary metabolites such as starch, protein and fat, and some special substances such as tannin and rubber. Mainly distributed in some structures of tuber, tuber, fruit, seed and rhizome, such as tuber of sweet potato. The parenchyma cells of potato (Solanum tuberosumL L.) store starch grains, the endosperm cells of Ricinus munisL L. store paste grains, and the cotyledon cells of peanut seeds store oil droplets.
Mechanical tissue: a kind of tissue that mainly plays a role in mechanical support and stability in plants.
Mechanical tissue cells are characterized by uniform or uneven cell wall thickening. According to its cell morphology, cell wall thickening degree and thickening method, it can be divided into thick horny tissue and thick-walled tissue.
Meristem: Meristem exists in specific parts of higher plants and is a kind of tissue that can divide continuously or periodically to produce new cells. Meristem cells divide, grow and differentiate to form other tissues, which is directly related to the growth and development of plants.
Question 3: What animal protection organizations are there in China? (In no particular order)
1. Capital Animal Protection Association
2. China Animal Care Network
3. Shenzhen cat
4. Shenzhen Stray Dog Station
5. Beijing Good Dog Good Cat Volunteer Group Station
6. Beijing "Walking with It" Animal Aid Center
7. Beijing Kuchong Xintiandi
8. Beijing Lucky Cat
9. Beijing Wangwang Wu Miao Orphanage
10. Don't eat friends.
1 1. Chongqing Small Animal Protection Association
12. Changchun Small Animal Protection Association
13. Changsha Small Animal Protection Association
14. Chengde Elf made an appointment to rescue stray animals.
15. Sichuan Qiming Small Animal Protection Center
16. Dalian loves the world
17. Dalian Love and Life Animal Rescue Association
18. Foshan Wenxin Xiaowo Animal Rescue Center
19. Fuzhou pet net
20. Guangyuan Aibo Animal Protection Center
2 1. Sichong Home in Guangzhou
22. Handan Small Animal Protection Network
23. Hengyang Small Animal Protection Association
24. Good Cat and Good Dog Volunteer Group Shanghai Station and Beijing Station
25. Harbin Small Animal Protection Association
26. Hainan Small Animal Protection Association
27. Sunshine Small Animal Protection Society of East China Normal University
28. Jinan Yellow River Stray Dog Rescue Center
29. Elf House-Salvation Alliance
30. Nanjing Ping An Afu Animal Protection Organization
3 1. Nanning stray cats
32. Qingdao Small Animal Rescue Center
33. Suzhou Small Animal Protection Volunteers Association
34. Shijiazhuang is one meter? Love stray cat rescue team
35. Shandong Taishan Animal Protection Association
36. Shantou Cat Lovers Association
37. Tianjin is the same home.
38. Tianjin Renai Rescue Association
39. Wuhan stray pet rescue station
40. Wuxi Er Quan Small Animal Protection Association
4 1.Xi Anhong Pomegranate Companion Animal Rescue Center
42. Xixi forest Guangzhou cat
43. Xiamen Afu Home Stray Dog Rescue Center
44. Xiamen pet net
45. Xiamen Corn Field Small Animal Rescue Center
46. Zhangzhou Small Animal Protection Center
47. China Youth Animal Protection Alliance
48. Xiamen Animal Care Education Professional Committee
49. Petting animal shelter
50. Zhuhai Xiangzhou District Animal Care Association
5 1. Baby's way home
52. Hohhot Angel Guardian
53. Sichuan Top Information Technology Vocational College Environmental Protection Association
54. Interpretation of the Animal Protection Association
55. Daqing stray animal rescue station
56. Low-carbon Earth
57. Sichuan Top Information Technology Vocational College Environmental Protection Association
58. Action Team for Animal Protection in Asia
59. "China Zoo Observation" Project Team
60. Angel Guardian in Hohhot, Inner Mongolia
6 1. Green field ark
62. China Animal Protection Press Salon.
63. Friends of Sunflower Animals
64. Rock Sugar Rescue Team
65. Good dog, good cat and stray dog volunteer group
66. Adoption shops
67. Dahl asked knowledge of nature Association.
68. National Animal Protection Coordination Center
This is part of it! ...& gt& gt
Question 4: What is the difference between plant tissue and animal tissue? Animal tissue; Epithelial tissue, muscle tissue, valve connective tissue and nerve tissue.
Plant tissue; Vegetative tissue, conduction tissue, meristem. protective tissue