a cleared leaf of a cottonwood( Populus)
A cleared leaf of a cottonwood(Populus )
A leaves of monocots with parallel veins
A leaves of monocots with parallel veins
双子叶植物叶的结构 Internal Structure of dicot leaf 表皮(上、下) upper Lateral and lower epidermis Vein 角质层 cuticle ●气孔器和保卫细胞 stoma guard cells ●叶肉 mesophyll Palisade Parenchyma 栅栏组织 palisade parenchyma Spongy ●海绵组织 spongy Parenchyma Air Space parenchyma LEAF CROSS-SECTION ●叶脉(维管束)vein
双子叶植物叶的结构 Internal Structure of Dicot Leaf z 表皮（上、下） 表皮（上、下）upper and lower epidermis and lower epidermis z 角质层 cuticle cuticle z 气孔器和保卫细胞 stoma & guard cells stoma & guard cells z 叶肉 mesophyll mesophyll z 栅栏组织 palisade palisade parenchyma parenchyma z 海绵组织 spongy parenchyma parenchyma z 叶脉（维管束） 叶脉（维管束）vein