Biology 1407 lecture exam 2 Questions and Answers

Biology 1407 lecture exam 2 Questions and Answers

Question 1.
Which of the following sex and generation combinations directly produces the pollen tube
of angiosperms?
Correct Answer: male gametophyte


Question 2.
The fact that both charophytes and green plants contain chlorophylls a and b demonstrate
which of the following?
Correct Answer: The common ancestor of these two groups contained
chlorophylls a and b


Question 3.
Which of the following would be the least likely to appear in the fossil record?
Correct Answer: desert-dwelling species


Question 4.
Which of the following organisms would be most likely to form a fossil?
Correct Answer: a common squirrel


Question 5.
Biologists sometimes divide living organisms into two groups: autotrophs and
heterotrophs. These two groups differ in _____.
Correct Answer: their sources of carbon


Question 6.
Arrange the following structures from largest to smallest, assuming that they belong to
two generations of the same angiosperm.
Correct Answer: carpel, ovary, ovule, embryo sac, egg


Question 7.
Which statement about the domain archaea is accurate?
Correct Answer: Genetic prospecting has recently revealed the existence of
many previously unknown archaean species.


Question 8.
This bacterium's ability to survive in a human who is taking penicillin pills may be due to
the presence of __________.
Correct Answer: Gram-negative cell wall


Question 9.
Upon being formed, oceanic islands, such as the Hawaiian Islands, should feature what
characteristic, leading to which phenomenon?
Correct Answer: a variety of empty ecological niches, leading to adaptive
radiation.


Page 1

, Question 10.
Dinoflagellates ____________.
Correct Answer: Possess two flagella


Question 11.
Which of the following traits do archaeans and bacteria share?
Correct Answer: lack of a nuclear envelope and presence of circular chromosome


Question 12.
If one organ is an exaptation of another organ, then these two organs _____________.
Correct Answer: are homologous


Question 13.
Which of the following steps has NOT yet been accomplished by scientist studying the
origin of life?
Correct Answer: Formation of Proto cells that use DNA to direct the
polymerization of amino acids


Question 14.
Hawaii is the most southeastern of the seven islands and is also closest to the sea-floor
spreading center from which the Pacific plate originates, which lies about 5,600 km further
to the southeast. Assuming equal sedimentation rates, what should be the location of the
thickest sediment layer and, thus, the area with the greatest diversity of fossils above the
oceanic crust?
Correct Answer: around the base of Kauai, the oldest of the Hawaiian islands


Question 15.
How does continental drift explain the uniqueness of Australian Fauna?
Correct Answer: The subsequent separation of the southern continents formed
an island of marsupials.


Question 16.
Which taxon is essentially equivalent to the "embryophytes"?
Correct Answer: Plantae


Question 17.
The duplication of homeotic (hox) genes has been significant in the evolution of animals
because it?
Correct Answer: permitted the evolution of novel forms


Question 18.
The earliest organisms were most likely _____.
Correct Answer: Prokaryotic


Question 19.
the predatory bacterium bdellovibrio bacteriophorus drills into a prey bacterium and, once
inside, digest it, In an attack upon a gram- negative bacterium that has a slimy cell

Page 2