release of collagen by specialized amoebocytes and followed by the release CaCo3 by amobocytes cells first appears in the collagen skeletal matric formed by: a) the sponge b)prokaryotes c)Osyteocytes of the Boney fishes, d) Adipose cells, e) Neuocytes of the choridates. Part 2) What is the process that would be employed by the two types of cells considered in the previous question? A) carried out by photosynthesis, B)Occurs in the nucleus C)captures solar radiation D) is carried by the Golgi apparatus thriugh exocytosis, E) doesn't happen.

According to the picture blow, how many times did branched filaments evolve in dinosaurs?

Examine the image of the relatedness of vertebrates represented in this phylogenetic tree. Which statements are correctly inferred from this tree? Select all that apply.   A) The mammals are the outgroup in this tree.     B) Birds and dinosaurs share a recent common ancestor.     C) Mammals and birds are more closely related than any other species.     D) Turtles are equally as diverged from lizards and snakes as they are from crocodiles.     E) Lizards and snakes are more recently diverged from each other than they are from crocodiles.

whihc of the following arthropod regions does not bear legs a) cephalothorax b) abdomen c) all of the above d) trunk e) thorax

Modern sponges produce microscopic spicules (right) to deter predation but, as the earliest animals, they existed before any predators evolved; how might biologists interpret this observation?   A. Spicules were probably absent in the earliest sponges and evolved later as predation began. B. Spicules performed other tasks in early sponges, possibly structural support, and were later modified for defense. C. Spicules were present in some sponge species and absent in others; predation became a selection pressure that eliminated some species entirely. D. All of the above are valid hypotheses.

9. In which of the following taxa would you find a foramen of Panizza? A) Crocodile B) Lungfish C) Bird D) Mammal E) Amphibian F) Turtle

The only living group of mammals that lay eggs rather than give birth to live young are called: A) marsupials B) monotremes C) placentals D) eutherians

Primitive men evolved in _________.a) Africab) Americac) Australiad) India

Which of the following structures is unique to mammals?   Question 6 options:   A)  Primitive meninx   B)  Dura mater   C)  Pia mater   D)  Secondary meninx

4) What makes Archeopteryx an important fossil evolutionarily? A)This species has a mix of characters that suggest it was a "transitional" species between two large groups, dinosaurs and birds. B)This species is the oldest known, universally agreed upon, fossil of life, and therefore tells up what the common ancestor to all living things might have been like. C)This species has a mix of characters that suggests is was a "transitional" species between two large groups, fish and amphibians. D)This species is thought to be the last common ancestor between chimps and humans, and therefore is the root of our own specific group (homonins).