Question

1. In the 1970s Dr. J Robin Warren used a technique not widely used by pathologists at the time, which allowed him to make novel observations that ultimately resulted in a new treatment for ulcers. What was this technique?

Select one:

a. The use of a fistula to see inside the stomach

b. The use of a high-power microscope

c. The use of a stain for visualizing bacteria

2. Darwin's observations in the Pampas grasslands of Argentina led him to the conclusion that

Select one:

a. species change through time.

b. species change with geographical distance.

c. the Earth must be much older than was widely believed at the time.

d. climate alone cannot account for the distribution of species.

e. similar species tend to be geographically clustered.

3. Which of the following historical figures argued that species were not fixed, i.e. able to change over time into new species?

Select one:

a. Cuvier

b. Aristotle

c. Hutton

d. Lamarck

e. Linnaeus

Monarch butterflies belong to the genus Danaus, the order Lepidoptera, the class Insecta and the family Nymphalidae. All members of the family Nymphalidae have brush-like hairs on their lower legs. The same brush-like hairs will be found on the lower legs of any other member of

Select one:

a. the genus Danaus

b. the class Insecta

c. All of these

d. the order Lepidoptera

The scientific name of the dove tree is Davidia involucrata Baillon. The word "Baillon" in this name is

Select one:

a. the subspecific epithet

b. the genus

c. the authority

d. the specific epithet

Answer 1

1. The correct answer is c

Dr. J Robin Warren was a pathologist who discovered that stomach ulcers (peptic ulcers causing sores on the lining of the stomach) are caused by infectious bacteria Helicobacter pylori. In around 1970, gastric biopsies came into the picture where a stomach tissue is removed that is suspected to be infected with bacteria for its examination. But, Dr. Robin Warren used staining technique and he kept on improving on those techniques for visualizing bacteria, and finally, in 1979 he noticed this spiral-shaped bacteria that is a causative infectious agent for peptic ulcers.

2. The correct answer is a

Basically, Darwin's theory is based on evolution, how organisms survive by struggling for their resources i.e organisms that adapt better according to the climatic area are capable to survive more and can reproduce. It also explains how organisms are evolved over a given period of time from their ancestors.

3. The correct answer is d

Lamarck worked on spiders, mollusks, worms, and other animals. So, while working on these animals and its fossils, he argued that species were not fixed, it changed over time. As the surrounding change, accordingly, species have to change to survive in that environment and then only they can reproduce and carry on their generations.

4. The correct answer is c

Genus Danaus, class Insecta and order Lepidoptera all belong to brush-footed butterflies where brush-like hairs are found on their lower legs.

5. The correct answer is c

In this Davidia involucrata Baillon,  Davidia is the genus, involucrata is the species and Baillon is the authority or author who coined the name. Basically, he was a french botanist