Which of the following best describes the evolution

11 Jun Which of the following best describes the evolution

Question
1. Which of the following best describes the evolution of bacteria?

Select one:

a. the biological species concept

b. prezygotic isolation mechanisms

c. the evolutionary species concept

d. postzygotic isolation mechanisms

e. sympatric speciation

2. What is the result of double fertilization in an angiosperm?

Select one:

a. a diploid zygote and haploid polar nucleus

b. a diploid zygote and a diploid endosperm

c. a diploid embryo and a triploid zygote

d. a triploid embryo and a diploid endosperm

e. a diploid zygote and a triploid endosperm

3. All of the following statements describe the Cnidarians except _ (blank) _.

Select one:

a. They have radial symmetry

b. They have a digestive system

c. They have two body forms: polyp and medusa

d. They capture their prey

e. They live in salt and fresh water

4. Which of the following is not a characteristic of the class osteichthyes?

Select one:

a. the swim bladder

b. a cartilaginous skeleton

c. fins supported by bony spikes

d. scales

e. the lateral line system

5. Which of the following statements is true of the sporophyte generation, but not the gametophyte generation?

Select one:

a. It is dominant in mosses

b. It produces gametes

c. Egg and sperm are produced through meiosis

d. It is haploid

e. In angiosperms it is less dominant than the sporophyte

6. Which of the following is true of the evolutionary species concept?

Select one:

a. It can be used to determine if two species are reproductively isolated

b. It can be applied to both asexually and sexually reproducing species

c. It can only be used to study prokaryotes

d. It can only be used to study living organisms

e. It can be used to determine traits such as size differences between males and females

7. What is an ancestral characteristic for all placental mammals?

Select one:

a. having a tail

b. walking on four legs

c. giving birth to live young

d. having antlers

e. having thumbs

8. What type of diagram indicates common ancestors and lines of decent or lineages?

Select one:

a. a phylogenetic tree

b. a homology tree

c. a convergent tree

d. an analogy tree

e. a parallel tree