1. In the marine food web shown, which of the
following organisms does not feed on silversides?
O
A. Arctic cod
OB. sea duck
C. ringed seal
O
D. beluga whale

C. Ringed seal

Explanation:

A marine food web illustrates how energy is passed from one organism (level) to another in this aquatic rich ecosystem.

In the following food web, the interaction goes like this:

The Arctic cod feeds on plankton and silverslides and it is preyed upon beluga whales and ringed seals.The sea duck goes to the bottom of the ocean to feed on benthic organisms and also consumes plankton and silverslides. It doesn't really have predators.The beluga whale doesn't really have predators, but it feeds on fish such as silverslades and Arctic cod.Ringed seals feed on plankton and Arctic cod and are then consumed by polar bears.

Therefore, according to this information, all organisms except the ringed seal feed directly on silverslides.

Six amino acids have side chains that are polar but not charged. these are serine (ser), threonine (thr), cysteine (cys), asparagine (asn), glutamine (gln), and tyrosine (tyr). these amino acids are usually found at the surface of proteins, as discussed in the proteins 2 module.

It doesn’t show the symbol