Answer:
Chemical and mechanical digestion are the two methods your body uses to break down foods. Mechanical digestion involves physical movement to make foods smaller. Chemical digestion uses enzymes to break down food.
Explanation:
Answer:
b, d, and f
Explanation:
The transition from aquatic lifestyle to land posses some problems to plants; these include;
- <em>Water conduction and food distribution problem</em>
- <em>Desiccation problem</em>
In order to firmly establish in the terrestrial environment, <u>plants need to be able to obtain the water necessary for their metabolic activities and be able to distribute manufactured food from the various sources of production to other parts of the plant body.</u> This is overcome by the development of conducting tissues in the form of phloem and xylem. The xylem is used to conduct water from the root to the body of the plant while the phloem is a tissue used to conduct manufactured food from the point of manufacturing round the necessary parts of the plant.
<u>Plants also face the problem of heat and the risk of desiccation on land</u>. The development of waxy cuticle takes care of this problem. The waxy cuticle acts as an insulator on leaves and other organs of the plant and thus protect them from desiccation.
Correct options: b, d, and f
Answer:
most prokaryotes have a single double stranded circular DNA
the cell's nucleoid
