Answer:
Option B is likely originated from photosynthetic bacteria.
Explanation:
A) pellicle and contractile vacoule
B) Stigma and chloroplast (photosynthetic bacteria)
C) reservoir and flagellum
D) photoreceptor and Nucleolus
Euglena is a genus of single cell flagellate eukaryotes. Euglena have features of both animals and plants. Euglena have photosynthesizing chloroplasts within the body of the cell, which enable them to feed by autotrophy, like plants. Euglena's chloroplasts evolved from a eukaryotic green alga. Thus, the intriguing similarities between Euglena and the plants have arisen of a secondary endosymbiosis. Molecular phylogenetic analysis support this hypothesis but this is not generally accepted. A stigma (red eyespot) is located near the base of the reservoir and this filters the light and focuses it on the paraflagellar body, and is involved in the phototaxis of this alga.
Answer: b. removes nutrients from seawater.
An oil spill is the release of oil which is used to run vehicle in water like boat and ships. The liquid oil like liquid petroleum hydrocarbon are spill over the water. This acts as a chief water pollutant. This oil adds up minerals to the seawater.
A primary active transport process is one in which MOLECULES MOVE THROUGH TRANSPORT PROTEINS THAT HAVE BEEN ACTIVATED BY ATP.
This is because, energy, in form of ATP is needed for active transportation to take place.
I would say that this is true, because an "end of pipe" remedy is used to describe methods used to remove <span>already formed contaminants from many sources (they can remove contaminants from air, water, waste, product or similar). Seeing that your question implies removing air emissions, I'd say it is a good example of an "end of pipe" remedy. Hope this helps! </span>