问题:菊科分为几个亚科?各亚科的主要特征有哪些?并例举药用植物6种以上...
Wednesday, September 14, 2022
Wednesday, October 19, 2022
问题:次生构造中发达的栓内层称为()A、次生皮层B、初生皮层C、后生皮层D、绿皮层E、落皮层...
Saturday, November 11, 2023
问题:日常食用的水果各属于哪种类型的果实?请各举出2种。...
Sunday, September 11, 2022
Tuesday, October 31, 2023
Wednesday, October 25, 2023
Wednesday, September 14, 2022
Wednesday, October 19, 2022
问题:双受精是()植物所特有的现象。A、低等植物B、孢子植物C、被子植物D、裸子植物...
Tuesday, October 31, 2023
Wednesday, September 14, 2022
问题:子房全部与凹下的花托愈合,花的其他部分着生于子房的上方称()。...
Wednesday, September 14, 2022
Sunday, September 11, 2022
Sunday, September 11, 2022
问题:具有毒性的药用植物是()。A、徐长卿B、乌头C、獐牙菜D、大戟E、萝芙木...
Wednesday, October 25, 2023
问题:试述常见的草酸钙晶体有哪些类型。怎样区别草酸钙晶体与碳酸钙晶体?...
Wednesday, September 14, 2022
问题:厚壁组织增厚的部分,一般在角隅处加厚,也有的在切向壁或靠近胞间隙...
Thursday, September 15, 2022
Wednesday, September 14, 2022
Sunday, September 11, 2022
Wednesday, September 14, 2022
问题:蓼科植物何首乌的干燥块根药用,为《药典》记载的中药材“首乌”。它...
Wednesday, September 14, 2022