Anew organism has been discovered. this organism has a bilaterally symmetric unsegmented body. it's capable of moving on its own with a muscular appendage and is encased in a large shell that seems to be attached to its body. based on this evidence, which phylum would this new animal likely be classified into?
a. mollusca
b. echinodermata
c. nematoda
d. arthropoda

The correct answer option is A. Mollusca.

Explanation:

We are given that a new organism has been discovered which has a bilaterally symmetric unsegmented body and is capable of moving on its own with a muscular appendage and is encased in a large shell that seems to be attached to its body.

Given the above information, we are to determine which class this phylum can be classified into.

The most appropriate answer for this is Mollusca. Here, the description matches that of a snail.

Other classifications like arthropoda have segmented bodies while echinodermata are symmetrical.

answer: 20 percent

the fish culture has become a developing commercial practice in developing countries which is already prominent in developed countries of the world. the major fish protein demand is being supplemented in developing countries is   fishing to meet the needs of the growing population. therefore, in some developing nations, the percentage of animal protein from fish in the diet can be as high as 20 percent.