Exam 15: Marine Animals

Which marine reptiles make long migrations to lay eggs on the very same beach they hatched from?

What needle-like structure provides a skeletal network for a sponge?

What phylum contains sea jellies?

Schooling behavior makes normally small fish appear like a large organism from a distance.

The first fish evolved about 50 million years ago.

What would be one thing that humans could do in terms of caring for the ocean according to National Geographic Explorer Brad Norman?

Photosynthetic autotrophs changed the composition of the atmosphere during the oxygen revolution.

Platyhelminthes were the first organisms to have:

What is a relatively large classification for a group of animals that share similar architecture, level of complexity, and evolutionary history?

What percentage of all living and fossil animals are invertebrates?

The symmetry in worms represents the transition from simple to advanced organisms.

What characteristics have made arthropods the most successful phylum? How do these animals grow? Can you think of any disadvantage of growing this way?

What comprises an arthropod's exoskeleton?

What special tool do tunicates use to obtain more food when suspension feeding?

What are the stinging cells present in cnidarians?

In the Insight to A National Geographic Explorer segment about Sylvia Earle's encounter with an octopus, we learn that humans are newcomers who have managed to dominate the earth in a relatively short time. Why does she have a problem with this? What are some problems that you could envision from human dominance

Some mollusks are segmented, indicating a common ancestor with annelids.

Which worm has a segmented body plan?

What is considered the most advanced animal phyla?

What is the most effective anti-drag body plan?