Answer:
response to stimuli / tropism
Explanation:
The plants and animals always respond to stimuli. It is an innate character of all living things. When a bright light falls on the eye, it closes immediately. This is responding to the stimuli. When someone touches the leaves of touch-me-not plants it closes its leaves due to the external stimuli.
The plants respond to the light. Because it does photosynthesis in the presence of light. Therefore, the leaves and branches of the plants always bend towards the light. This process is called phototropism.
Similarly, the roots of the plants move towards gravity under the ground. This is called geotropism.
Besides phototropism and geotropism, other types of stimuli are there - hydrotropism(response to the water), chemotropism(response to certain chemicals).
That's why the plants growing on the windowsill move towards outside where light comes.
The answer is D
One way to remember this is when you are building a bridge there is one piece right in the middle that keeps the whole thing from collapsing that is called the key-stone. If a keystone species goes extinct then the rest of the ecosystem will crumble around it.
Answer: Option A) Exocytosis
Explanation:
Unlike the other pathways mentioned, exocytosis involves the outward movement of outside the cells. This is vital in the removal of waste products generated within the cell.
Thus, exocytosis is the answer because it expels materials out of the cell, rather than deliver materials to lysosomes
Answer:
both will concentrate in the vinegar layer because both are polar and Hbond with vinegar (an acid)
Explanation:
Answer:
Passive transport involves movement of substances from areas of higher concentration to areas of lower concentration.
Explanation:
Passive transport involves the passage of substances through a semi-permeable membrane, as occurs with transport at the level of cell membranes.
Generally, passive transport occurs with the <u>movement of compounds from the space with the highest concentration of a specific substance to the space with the lowest concentration of the same substance</u>, following the so-called concentration gradient. Theoretically, the gradient tends to disappear when the concentrations of substances have balanced out.
Regarding other options:
<em> A. </em><u><em>From areas of lower concentration to areas of higher concentration</em></u><em>. It is a feature of active transport.</em>
<em> C. </em><u><em>From areas in which the concentration has reached a balance</em></u><em>. There is no passive transport</em>
<em> D. </em><u><em>From areas of differing concentrations with the use of cellular energy</em></u><em>. Energy use involves active transport.</em>
