Answer:
Assimilation
Explanation:
Plant roots absorb ammonium ions and nitrate ions in the process of assimilation to use these ions to make molecules like <em>DNA, amino acids, and proteins</em>.
Animals cannot absorb these ions directly; hence they need to consume these plants for the nutrient supplies.
Without sunlight plants can undergo photsynthesis and cannot produce oxygen for humans to breathe and would cause the humankind to go extinct.
Answer:
The correct answer is "permissiveness".
Explanation:
The missing options of the question are:
permissiveness
synergistic effect
antagonism
additive effect
The correct answer is "permissiveness",
In biology, a permissive effect is defined as the effect that one hormone has enabling that a second hormone to exert its biological activity. Thyroid hormone has a permissive effect on the hormone epinephrine, by synthesizing ß adrenergic receptors, it enables the hormone epinephrine binds to them and cause the cells of the bronchioles to dilate.
<h2>Answer:</h2>
<u>When a plant cell is placed in a hypo-tonic solution It becomes turgid and hard.</u>
<h2>Explanation:</h2>
A hypotonic solution refers to a solution that has less solute and more water than another solution. When the plant cell is placed in a hypotonic solution, it takes up water by osmosis and starts to swell, but the cell wall prevents it from bursting. The plant cell is said to have become "turgid" i.e. swollen and hard. The pressure inside the cell rises until this internal pressure is equal to the pressure outside.
