Exam 32: Deuterostome Animals

Which of the following groups is classified as Homo sapiens?

Which of the following are the most abundant and diverse of the extant vertebrates?

The evolution of similar insulating skin coverings such as fur, hair, and feathers in mammals and birds is a result of ________.

The vertebrate spinal cord develops from the embryonic ________.

Which of these are amniotes?

Which group's members have both lungs and gills during their adult lives?

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 polychaete, a siliceous sponge, several bivalves, a shrimp, several sea anemones of different types, a colonial hydra, a few coral species, an ectoproct, a sea star, and several herbivorous gastropod varieties. Lastly, she added some vertebrates-a parrotfish and a clownfish. She arranged for daily feedings of copepods and feeder fish. The bivalves started to die one by one; only the undamaged shells remained. To keep the remaining bivalves alive, the teacher would most likely need to remove the ________.

It is believed that the coelacanths and lungfish represent a crucial link between other fishes and tetrapods. What is the major feature in these fish in support of this hypothesis?

How did the evolution of the jaw contribute to diversification of early vertebrate lineages?

Which of the following are considered apes?

Use the following information to answer the question(s) below. Terry catches a ray-finned fish from the ocean and notices that attached to its side is an equally long, snakelike organism. The attached organism has no external segmentation, no scales, a round mouth surrounded by a sucker, and two small eyes. Terry thinks it might be a marine leech, a hagfish, or a lamprey. -Which feature excludes the organism from possibly being a leech?

Suppose, while out camping in a forest, you found a chordate with a long, slender, limbless body slithering across the ground near your tent. This critter could be ________.

With which of the following statements would a biologist be most inclined to agree?

Why do skates and rays have flattened bodies, while sharks are torpedo shaped?

Use the accompanying figure and information to answer the question(s) below. -Which graph properly depicts the relationship between the amount of gas in the swim bladder and the density of the fish?

Which of the following animal groups is entirely aquatic?

Which of the following is a characteristic of all chordates at some point during their life cycle?

In what way are monotremes similar to more ancestral chordate lineages, as opposed to more recently evolved mammals?

A new species of aquatic chordate is discovered that closely resembles an ancient form. It has the following characteristics: external armor of bony plates, no paired lateral fins, and a suspension-feeding mode of nutrition. In addition to these, it will probably have which of the following characteristics?

Use the following information to answer the question(s) below. Brown et al. and Morwood et al. reported in 2004 that they had found skeletal remains of a previously unknown type of hominin, now dubbed Homo floresiensis, on the Indonesian island of Flores. These hominins were small (approximately 1 meter tall) with small braincases (approximately 380 cubic centimeters) as compared with other hominins. The remains of H. floresiensis were found alongside handmade stone tools and the remains of dwarf elephants that also inhabited the island, suggesting that H. floresiensis was able both to make tools and to coordinate the hunting of animals much larger than itself. H. floresiensis is estimated to have lived at the site where the remains were found from at least 38,000 years ago to 18,000 years ago. -Referring to the paragraph above, think about the most feasible method to evaluate which other hominin species H. floresiensis was most closely related. You could compare ________.