Scanning electron microscope- this is a type of microscope that uses beams of electrons to view the surface of a specimen. it is used to provide a three-dimensional image of cells
transmission electron microscope- uses beams of electrons to examine the insides of thin slices of materials. it is used to provide a two-dimensional image of cell structures
The correct answer is option C, that is a runoff.
The water from rain, snowmelt, or other sources is known as surface runoff, it flows over the land surface, and is a prime constituent of the water cycle. Runoff, which takes place on the surfaces prior to reaching a channel is also known as overland flow. When flowing of runoff takes place along the ground, it can pick up soil contaminants like pesticides, petroleum, or fertilizers, which turn into overland or discharged flow.
The question is incomplete as it does not have the options-
a. superfluous organ
b. extra appendage
c. vestigial structure
d. living fossil
e. chromosomal aberration.
Answer:
The correct answer will be option-vestigial structure
Explanation:
Vestigial structure are the structures which do not play any role in the organisms but still are inherited from the ancestors to maintain the fitness of the organisms.
Vestigial organs are found in many organisms including humans in which the presence of vermiform appendix do not play any role but it used to play roles in the ancestors of humans as they carried the cellulose-degrading bacteria.
Thus, a vestigial structure is the correct answer.
During the lifecycle of the plant we can encounter both haploid and diploid forms.