Answer:
Epiblema, cortex, endodermis, pericycle
Explanation:
The outer most layer of monocot root is rhizodermis or epiblema which has compactly arranged tubular cells and unicellular root hair as their extension. Just beneath the epiblema are multiple layers of parenchymatous cells with ample intercellular space, it is cortex. The inner most layer of cortex forms endodermis which has compactly arranged barrel shaped cells with casparian strips at their anticlinal wall. The uniseriate layer of thin walled parenchymatous cells, present below endodermis, which are sclerified in old roots makes pericycle. The vascular bundles are present as alternating strands of xylem and phloem, the discrete xylem strands alternated with phloem strands. The central parenchymatous cells form pith.
Yes, because vaccines help prevent diseases whereas antibiotics help cure them. (it’s better to prevent)
Answer:
E. that area of the membrane is in the absolutely refractory period.
Explanation:
Refractory period is a period during which neuron cell cannot be stimulated (depolarized). This is why the action potential can only travel in one direction from the neuron body towards axon.
Refractory period occurs because of the inactivation of voltage-gated sodium channels (while action potential is at its peak) which cannot be open for a certain period of time. and membrane cannot be depolarized.
