Question

An elementary school science teacher decided to liven up the classroom with a saltwater aquarium. Knowing that saltwater aquaria can be quite a hassle, the teacher proceeded stepwise. First, the teacher conditioned the water. Next, the teacher decided to stock the tank with various marine invertebrates, including a sea star, a sponge, a sea urchin, a jellyfish, several hermit crabs, some sand dollars, and an ectoproct. Last, she added some vertebrates−−a parrotfish and a clownfish. She arranged for daily feedings of copepods and feeder fish.

Had the teacher wanted to point out organisms that move and feed using the same structural adaptation, the teacher should have chosen the

Please use the following information to answer the question below.

An elementary school science teacher decided to liven up the classroom with a saltwater aquarium. Knowing that saltwater aquaria can be quite a hassle, the teacher proceeded stepwise. First, the teacher conditioned the water. Next, the teacher decided to stock the tank with various marine invertebrates, including a sea star, a sponge, a sea urchin, a jellyfish, several hermit crabs, some sand dollars, and an ectoproct. Last, she added some vertebratesa parrotfish and a clownfish. She arranged for daily feedings of copepods and feeder fish.

Had the teacher wanted to point out organisms that move and feed using the same structural adaptation, the teacher should have chosen the

sponge and the jellyfish.

vertebrates.

sea star, sea urchin, and sand dollars.

hermit crabs and the ecotoprot.

Answer 1

If the teacher had to point out organisms that move and feed using same structural adaptations the teacher should have chosen sea star, sea urchin, and sand dollars. As these three belong to the Phylum Echinodermata not only showcase similar structural built but also move in similar fashion. They move along the ocean surface by pushing water from its vascular system to its delicate tube feet.

Most of the Echinoderms rely on feeding mechanisms which is suspension, deposit or filter feeding. The feeding of these three organisms is also closely similar sea urchins are filter feeders, sea stars are deposit or suspension feeders and sea dollars are mostly deposit feeders.

The reason why others fail is because:

• While, sponge and the jellyfish do not have similar movement pattern sponges being non-motile and jellyfish are mostly motile.
• Aquatic Vertebrates have various organisms covered up hence there is huge variety in locomotion and feeding mechanisms.
• Hermit crabs and the ectoproct have also different feeding and movement strategies.