The epidermis of plant roots mainly functions in ( ).
A: Protection
B: Absorption
A: Protection
B: Absorption
举一反三
- 以下哪项不属于淋巴系统的功能? A: maintain fluid balance B: protection from infection C: absorption of fat D: absorption of protein
- The advantage of the exoskeleton system is that the support and protection functions are closely combined. ()
- The epidermis is made up mainly of skin cells called keratinocytes. Keratin means (two words)
- In soil sa______ with water, plant roots must live in an oxygen-deprived environment because all the air is displaced by water.
- VB6 in plant foods is mainly ( ). A: Pyridoxine B: Pyridoxal C: Pyridoxamine D: Pyridoxine