Answer:
Root hair cells are alive and therefore need energy, which is why root hair cells contain many mitochondria in them. Root hair cells don't contain chloroplasts. Chloroplasts are used by the plant to make food using light energy. Since the roots aren't exposed to any form of light, they have no need for chloroplasts.
Answer:
The correct answer is option D. Permissive.
Explanation:
The permissive effect or interaction of a hormone is in which hormone can not show or exert its complete effect without the presence of another hormone on a specific target site or cell.
The interaction of a hormone can occur in two more ways - synergies and antagonism where synergy occurs when two hormones perform the same action on a target cell and impact are amplified, and antagonist has the opposite role in the presence of another hormone.
Thus, the correct answer is - d. Permissive.
Name the five layers of epidermis. Which layer is found only in thick skin? Superficial to deep: Stratum corneum, stratum lucidum, stratum granulosum, stratum spinosum, stratum basale
A, the cytoplasm is the jelly-like substance that suspends the organelles and provides structure for the cell.
