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Hint: Filter feeders are a sub-group of suspension-feeding animals which are specialized to feed by filtering the suspended matter and food particles present in the aquatic environment, typically by passing the water over a specialized filtering feeding structure.
Complete answer: The filter-feeding is a method of aquatic feeding during which the animal takes in many small pieces of prey at just one once. It simply involves opening up the mouth and taking in whatever is present in front. Some animals that use this method of feeding are clams, krill, sponges, baleen whales, and many fishes. In the process, it filters out undesirable parts. Unio tortoni is a typical species of medium-sized freshwater clam, an aquatic bivalve mollusc. It is a typical filter feeder and traps planktons by their enlarged sieve-like gills plates or demi branches. Water enters through the opening present in the mantle cavity and moves upwards through the gills to the suprabranchial chamber. Gills are specially designed such that it is coated with mucus which traps the plankton on the gill surface. Intracellular digestion also takes place within the exocrine gland by phagocytosis.
So, the correct answer is option B.
Note: It is important to note that Mussels are filter feeders; they process large volumes of the water in order to get food and nutrition. Filter feeding may be a method of eating that's employed by diverse organisms. Filter feeders can play an important role in clearing water and are therefore called as ecosystem engineers.
Complete answer: The filter-feeding is a method of aquatic feeding during which the animal takes in many small pieces of prey at just one once. It simply involves opening up the mouth and taking in whatever is present in front. Some animals that use this method of feeding are clams, krill, sponges, baleen whales, and many fishes. In the process, it filters out undesirable parts. Unio tortoni is a typical species of medium-sized freshwater clam, an aquatic bivalve mollusc. It is a typical filter feeder and traps planktons by their enlarged sieve-like gills plates or demi branches. Water enters through the opening present in the mantle cavity and moves upwards through the gills to the suprabranchial chamber. Gills are specially designed such that it is coated with mucus which traps the plankton on the gill surface. Intracellular digestion also takes place within the exocrine gland by phagocytosis.
So, the correct answer is option B.
Note: It is important to note that Mussels are filter feeders; they process large volumes of the water in order to get food and nutrition. Filter feeding may be a method of eating that's employed by diverse organisms. Filter feeders can play an important role in clearing water and are therefore called as ecosystem engineers.
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