Biogeographic Distribution

Q. The finches of Galapagos islands provide an evidence in favor of

1. Evolution due to mutation.
2. Retrogressive evolution.
3. Special creation.
4. Biogeographical evolution.

Q.

Occurrence of similar endemic species in South America and Australia is due to

1. All of the above
2. Extinction of species
3. Continental separation
4. Retrogressive evolution

Q. Parallel evolution is

1. Adaptive divergence
2. Adaptive convergence
3. Evolution of similar species simultaneously in two different geographical areas
4. Evolution of similar species simultaneously in the same geographical area

Q. The evolution of marsupials in the continents of Australia and South America is an example of .

1. convergent evolution
2. adaptive radiation
3. divergent evolution
4. parallel evolution

Q.

A species that invades a barren area is called: [1 mark]

1. Endemic species
2. Invasive species
3. Pioneer species
4. Niche species

Q. Parallel evolution is

1. Adaptive convergence
2. Adaptive divergence
3. Evolution of similar species simultaneously in two different geographical areas
4. Evolution of similar species simultaneously in the same geographical area

Q. Occurrence of endemic species in south America and Australia due to :

1. Continental separation
2. These species have been extinct from other regions
3. These is no terrestrial route to these places
4. Retrogressive evolution

Q. What is gene pool ?

Q. Differentiate between :
Geographical and reproductive isolation

Q. Assertion :

Atavism is the reappearance of disappeared ancestral characters.

Reason: Third molars and hair on body are examples of atavism.

1. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
2. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
3. Assertion is correct but Reason is incorrect
4. Both Assertion and Reason are incorrect

Q. An isolated population with equal number of blue-eyed and brown-eyed individuals was decimated by earthquake. Only a few brown eyed individuals survived to form next generation. The change in gene pool is :

1. Hardy-Weinberg equilibrium
2. Blocked gene flow
3. Founder effect
4. Bottleneck effect

Q. Populations are said to be sympatric when two populations

1. Are isolated but occasionally come together to interbreed
2. Share the same environment but can not interbreed
3. Are physically isolated by natural barriers
4. Live together and freely interbreed to produce sterile offspring

Q. A population splits into two or more groups and these groups occupy the different ecological zones. This is known as

1. Sympatric speciation
2. None of the above
3. Allopatric speciation
4. Ecological speciation

Q. What is gene pool?

Q. Assertion :Sympatric speciation always occur due to geographical isolations. Reason: Sympatric speciation is a single population splitting into two due to reproductive isolation.

1. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.
2. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion.
3. Assertion is correct but Reason is incorrect.
4. Assertion is incorrect but Reason is correct.

Q. A small isolated population found on a remote island is more likely to undergo speciation than a large widespread population, which of the following statement is correct regarding a small isolated population?

1. Is more susceptible to genetic drift
2. Inherently contains much greater genetic diversity
3. Is more readily adaptable to extreme environmental changes
4. Is more likely to migrate to other islands or the nearest mainland
5. Has a greater likelihood of containing sterile hybrid individuals

Q. Endemic species are susceptible to extinction. Justify.

Q. Origin of primates occurred about ............. million years ago.

1. 500 - 400
2. 60 - 70
3. 80 - 100
4. 1.6 - 1.8

Q. Formation of several species of finches in Galapagos islands or marsupials in Australia is

1. Allopatric speciation
2. Sympatric speciation
3. Fusion speciation
4. Phyletic speciation

Q. Assertion :Allopatric speciation according to Mayr results due to different variations because of mutations, genetic drift and postmating and permating reproductive isolation. Reason: These species are never geographically isolated.

1. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.
2. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion.
3. Assertion is correct but Reason is incorrect.
4. Assertion is incorrect but Reason is correct.

Q. What does the term gene pool mean?

1. Total minter of different kinds of genes pooled by all the member of a population
2. Harmful micro-organisms in a pool
3. Total number of genes in all cells of a single individual
4. Total number of micro-organisms found in a swimming pool

Q. Occurrence of endemic species in south America and Australia due to :

1. These species have been extinct from other regions
2. Continental separation
3. These is no terrestrial route to these places
4. Retrogressive evolution

Q. Occurrence of similar endemic species in South America and Australia is due to

1. Extinction of species
2. Continental separation
3. Retrogressive evolution
4. All of the above

Q. The third name in the trinomial nomenclature is?

1. Species
2. Subgenus
3. Subspecies
4. Ecotype

Q. The evolution of marsupials in the continents of Australia and South America is an example of .

1. convergent evolution
2. adaptive radiation
3. divergent evolution
4. parallel evolution

Q. Allopatric speciation occurs when

1. genetically related populations inhabit widely separated geographical area
2. genetically unrelated populations inhabit widely separated geographical area
3. genetically related populations inhabit the same geographical area
4. genetically unrelated populations inhabit the same geographical area

Q. Northern elephant seals are large marine mammals that live off the coast of southern California. In the late 1800s, they were hunted to near extinction. Conservation efforts by the Mexican government in the early 20th century restored their numbers with a breeding population of fewer than 100 individuals.
As a result, the northern elephant seal population demonstrates far less genetic diversity than southern elephant seals.
The hunting of the northern elephant seal population created which of the following phenomena resulting in the reduction of the population's genetic diversity?

1. Speciation
2. Adaptive radiation
3. Bottleneck effect
4. Gene flow
5. Founder effect

Q. Allopatric speciation occurs when

1. genetically related populations inhabit widely separated geographical area
2. genetically unrelated populations inhabit widely separated geographical area
3. genetically related populations inhabit the same geographical area
4. genetically unrelated populations inhabit the same geographical area

Q. The theory of evolution indicates that

1. Monkey evolved from man
2. Man evolved from dinosaur
3. Man evolved from monkeys
4. Man and apes had common ancestors

Q. Differentiate between :
Allopatric and sympatric speciation