There is current controversy about which group is sister to the rest of the animals. Which two of the following groups are the potential sister groups to all the other animals?   a. Ctenophores   b. Cnidarians   c. Porifera   d. Both a. and b.    e. Both a. and c.

7. Primates have prehenslle hands (and sometimes they have prehensile feet). What does this mean? O A. They have five digits on each hand and foot. O B. They have nails rather than claws. C. Their hands are adapted for seizing or grasping. O D. They have an opposable thumb, which allows for a precise grip. 17:48:40 esc W e

Differentiate Australopithecus afarensis from Australopithecus africanus. Basis A. afarensis A. africanus a. Discoverer     b. cultural means of adaptation     c. diet     d. greatest achievement     e. size of the skull     f. brain mass     g. timeline of survival on earth     h. specific habitat     i. height and size

Why are Tarsiers difficult to place on the phylogenetic tree?   A. Because they are genetically closer to Strepsirrhines, but they have many physical traits similar to Haplorrhines   B. Because they are not similar physically to either Strepsirrhines or Haplorrhines   C. Because they are genetically closer to Haplorrhines, but they have many physical traits similar to Strepsirrhines   D. Because they are not similar genetically to either Strepsirrhines or Haplorrhines

According to "The Complex Evolution of Homo sapiens", where were the earliest fossils that are potentially Homo sapiens found? How old are they?    A.Morocco - 3 million years old B.Kenya - 300,000 years old C.Morocco - 300,000 years old D.Tibet - 300,000 years old     A.Ivory rings B.Jewelry from stone and marble C.Needles made from bone D.Both A and B E.A, B and C

One hypothesis for the Cambrian explosion was an increase in predator-prey relationships. It is thought that the resulting co-evolution of predator and prey may have been a factor in the rapid speciation of animals seen during this time. What findings in the fossil record would most support this? Group of answer choices a. increased incidence of larger-bodied animals b. increased incidence of sessile animals c. decreased incidence of animals with bilateral symmetry d. increased incidence of animals with radial symmetry e. increased incidence of shells, bony plates, spines, and/or claws

Which of the following is NOT an ancestral trait in primates?   A. Trichromacy   B. Having Nocturnal Adaptations   C. Fur   D. Claws

the same as the genus of an animal that steals chloroplasts from algae. It can keep the chloroplasts alive for many months, thanks to genes that were originally part of the algae genome. What kind of animal is this? A. Luna both caterpillars, Insecta, Arthropod B. Marine Flatworm, platyhelminthes C. Sea slug, mollusk gastropod D. Bivalve, Mollusk 18

A shared ancestral feature is a/an select one a. symplesiomorphy b.synapomorphy c.autapomorphy

Which pair of organisms in the table have a vertebral column, but not four limbs?   A. lancelet and lamprey B. frog and turtle C. turtle and leopard D. lamprey and bass E. bass and frog