Answer:
Option (2).
Explanation:
Ames test is used to identify the mutageneicity of the compound. The bacteria are treated with chemicals in the nutritive environment to determine whether the substance can acts as a mutagen or not.
The bacteria that can restore the biosyntheic activity in the environment can be considered as mutagen. The mutant bacteria can be easily identified in the Ames test.
Thus, the correct answer is option (2).
Sponges are organisms that are members of phylum prolifera, they are simple multicellular animals without a mouth, muscles, heart or brain.Sponges's tissues contains collar cells and amoebaocytes in its tissues. They feed by drawing water in through their pores and filter out food particles. Sponge larvae are more animal-like than adult sponges because they are free-swimming organisms.
I think true if its not sorry
The frequency of radiation from a Cesium-133 atom is 9,192,631,770 cycle/s
= 
×
cycles/s
The number of cycles of radiation in one second is ×
The number of cycles during 1 mosquito wing beat,
i.e., the number of cycles in 
= 
×
= 
×
Learn more about radiation
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Answer:
1. B. parasitism
2. C. parasitism, predation, mutualism
Explanation:
