1、()是植物细胞所特有的。
A、细胞壁
B、细胞膜
C、细胞质
D、细胞核
参考答案：请扫码使用小程序查看答案
2、细胞壁的三个主要成分是纤维素、半纤维素和()。
A、水
B、果胶
C、蛋白质
D、脂类
参考答案：请扫码使用小程序查看答案
3、纤维素是疏水的。()
参考答案：请扫码使用小程序查看答案
4、细胞壁可以保护植物免受外来病原体的侵害,免受细菌和真菌的侵害,还可以保持植物不失去水分。()
参考答案：请扫码使用小程序查看答案
《植物知道生命的答案》导读（北京大学)
- 1.1plants have an impact on modern history
- 1.2Excellent model system for basic science
- 1.3We have to feed the world
- 1.4Major themes in (plant) biology
- 1.5Multi cellular plant and animals evolved independently
- 2.1Darwin the botanist
- 2.2Why do irises flower in the spring
- 2.3PhytochromeA light activated switch
- 2.4Light regulation of seedling development
- 2.5photomorphogenesis again
- 3.1The cell is the basic structure of (plant) biology
- 3.2Common features of all cells
- 3.3Specific to the plant cell――cell wall
- 3.4Specific to the plant cell――chloroplast
- 3.5Specific to the plant cell――vacuole and communication
- 3.6Two types of vascular tissues――xylem and phloem
- 3.7the phloem development
- 4.1what is smell？
- 4.2How do plants “smell” ethylene?
- 4.3Dodder's preference
- 4.4A talking tree
- 4.5Does the response effect neighboring flowers?
- 5.1The Venus fly trap
- 5.2A short-term memory of the Venus fly trap
- 5.3Electrical motion of mimosa pudica
- 5.4A negative touch
- 5.5Plant and music
- 5.6What’s the deaf gene?
- 5.7The plant is the deaf？
- 6.1The diversity of plants
- 6.2How do plants maintain growth through the entire life cycle?
- 6.3Root structure
- 6.4Shoot structure
- 6.5Genetic model of flowering
- 6.6The ABC model
- 7.1The sixth sense of plant
- 7.2How does the plant sense gravity?
- 7.3Phototropism and Gravitropism
- 7.4How auxin works in phototropism?
- 7.5The movement of plant hormones
- 8.1How plants absorb solar energy？
- 8.2An overview of the two stages of photosynthesis
- 8.3The process of light reaction
- 8.4The process of dark reaction
- 8.5The Carbon Cycle
- 9.13 stages to form a memory
- 9.2Short term memory
- 9.3Long term memory 1：Morphogenetic memory
- 9.4Long term memory 2：Weather memory
- 9.5Molecular basis of vernalization：Epigenetics
- 9.6Transgenerational memory
- 10.1There is no such thing that's natyral
- 10.2Genetic Engineering
- 10.3How do we do this？
- 10.4Barriers to Genetically Modified Food Ⅰ
- 10.5Barriers to Genetically Modified Food Ⅱ
- 10.6Barriers to Genetically Modified Food Ⅲ
