True or false? Recent genetic evidence indicates that there may be—in the roots of some plants—a response stimulated by the concentration of water in the soil. Group of answer choices

False

True

Match the following terms describing electrical events with the correct phases of the cardiac cycle. the ventricular muscle cells depolarize at the start of this phase. during this phase, na+ entry through the funny channels causes the pacemaker potential of sa nodal cells to gradually become less negative until it reaches threshold. the ventricular muscle cells repolarize right before this phase. the cytosolic concentration of calcium in the contractile cells of the ventricle is highest during this phase. a. isovolumetric relaxation b. ventricular ejection c. isovolumetric contraction d. ventricular filling

The diagram shows the layers of earth. convection currents in which region influence the movement of tectonic plates

What is a group of organisms that are closely related and share similar characteristics