According to the passage, the five well-known plant hormones are not useful in controlling the growth of crops because___ A.it is not known exactly what functions the hormones perform B.each hormone has various effects on plants C.none...
In a plant, the ___ is a layer of cells between the xylem and phloem that can produce new cells for growth. A. 论有斗委专长系究论有斗委专长系究parenchyma论有斗委专长系究论有斗委专长系究 B. 此意政段来少现设布效制处此意政段来少现设布效制处sclerenchyma此意政段来少现设布效制...
aIn plant cells, pectin consists of a complex set of polysaccharides that are present in most primary cell walls and particularly abundant in the non-woody parts of nearly all terrestrial plants. 在植物细胞,果胶包括在几乎所有地球植物的non-woody部分上是存在多数主要细胞壁和特别丰富的复杂套多聚糖。
C的duplicate gene也是无中生有，E说Multiple effects就错了，应该是specific，
they have the potential to produce different types of differentiated cells (for example, the marked stem cells that produced the white sectors in Figure 3 gave rise to all the different cell types that make up a leaf). Do similar mechanisms operate in plant and animal stem cells to maintain...
In a growing plant, which tissue gives rise to new cells for the elongation of roots and shoots? A. Apical meristem B. Lateral meristem C. Intercalary meristem D. Sclerenchyma tissue 相关知识点: 试题来源: 解析 A。解析:在生长的植物中,顶端分生组织(Apical meristem)为根和茎的伸长产生新细胞。
Plant,_Animal_&_Special_cells AnimalandPlantCellsAnimalandplantcells CellMembraneCellmembrane Onepartfoundinallcellsisthecellmembrane.Thecellmembranesurroundsthecellandholdsthecelltogether.Itcontrolswhatchemicalscanenterandleavethecell.NucleusNucleus Anotherpartfoundinallcellsisthenucleus.Thenucleuscontrolsthecell....
These data provide the basic foundation for future efforts to develop OPDA-based approaches in the prevention and treatment of breast cancer and other types of cancer. 展开 关键词: Beta catenin Breast cancer Cyclin D1 12 Oxo phytodienoic acid Plant hormone ...
Plant cells show an acquired insensitivity to Brefeldin A The parameters of Brefeldin A (BFA) action in plant cells have been further investigated in maize root tips. Incubation of maize root tip cells with 100 mu... Steele-King Clare G,Evans David E,Satiat-Jeunemaitre Béatrice,... - 《...
Through-flow of water in leaves of a submerged plant is influenced by the apical opening Submerged aquatic higher plants maintain acropetal water transport to the young leaves in active growth to satisfy their demand for nutrients and hormones ... O Pedersen,LBJ Sand-Jensen - 《Planta》 被引量...