Question

Give a scientific term for each of the following.
(i)The first formed category of photosynthetic organisms.
(ii) The surgical removal of a section of fallopian tube.
(iii) An animal behaviour which benefits others but is of no advantage to itself.
(iv) The hydrostatic pressure developed inside the cell on the cell wall due to endosmosis.

Answer 1

(i) Cyanobacteria, an organism which was evolved as the first category of the photosynthetic organisms. These are also known as blue-green algae. They performed photosynthesis with the help of the chloroplast and called as photosynthetic bacteria.

(ii) Tubectomy is the surgical method of preventing contraception. This is the method in which the fallopian tubes are surgically removed. The tubes can also be cut and tied or sealed. This causes the egg to be unavailable in the ampulla for the process of fertilization.

(iii) Commensalism is the type of association between two organisms. This is a form of relation in which one of the organism is benefitted while the other partner is neutral.

(iv) Turgor pressure is the pressure which is developed inside the cell due to the process of endosmosis. This is the hydrostatic pressure which helps to maintain the shape and the structure of the cell.