Alien Species Invasion

Q. 'Rivet popper hypothesis' to explain the role of species richness for ecosystem health was given by

1. Paul Ehrlich
2. Alexander Von Humboldt
3. Edward Wilson
4. Robert May

Q. Cichlid species became extinctfrom

1. Lake Victoria
2. Lake Elizabeth
3. Royal Lake
4. Chilka Lake

Q. Which one of the following pairs of organisms are exotic species introduced in India?

1. Ficus religiosa and Nile perch
2. Ficus religiosa and Lantana camara
3. Water hyacinth and Lantana camara
4. Nile perch and Japnese Kudzu

Q. Which of the following is correctly matched?

1. Stratification-Population
2. Aerenchyma-Opuntia
3. Age pyramid-Biome
4. Parthenium hysterophorus-Threat to biodiversity

Q. Which one of the following pairs of organisms are exotic species introduced in India?

1. Ficus religiosa, Lantana camara
2. Lantana camara, water hyacinth
3. Water hyacinth, prosopis cineraria
4. Nile perch, Ficus religiosa

Q. Which of the following is/are (an) exotic species?

1. Parthnium
2. Lantana
3. Eichhornia
4. All of these

Q. a) What is endemism?
b) Mention 'The Evil Quartet' of biodiversity loss.

Q. The alien species introduced into Lake Victoria that was responsible for the extinction of cichlid fishes is

1. African catfish
2. Water hyacinth
3. Carrot grass
4. Nile perch
5. Murrels

Q. 'Rivet popper hypothesis' to explain the role of species richness for ecosystem health was given by

1. Paul Ehrlich
2. Alexander Von Humboldt
3. Edward Wilson
4. Robert May

Q.

Which of the following is a correct example of a species that wreaked havoc in an alien ecosystem?

1. Kudremukh

2. Bhramagiri

3. Sharavathi valley

4. Dandeli

Q. In lake Victoria of Africa, which of the following is responsible for elimination of native cichlid fishes?

1. African eel
2. Nile perch
3. African cat fish
4. Labeo

Q. Which of the following is/are (an) exotic species?

1. Parthenium
2. Lantana
3. Eichhornia
4. All of these

Q. Which of the following terms can be used to describe the condition in which proper identification of male and female individuals is possible due to morphological appearance?

1. Heterotrophy
2. Hermaphroditism
3. Sexual dimorphism
4. Dioecy

Q. The troublesome American waterweed found in India is

1. Eichhornia
2. Trapa
3. Cyperus
4. Typha

Q. Why do species turn invasive in a foreign habitat?

1. Species co-evolve in foreign habitats
2. There are no natural evolutionary constraints
3. There are no native species
4. Due to unforeseen ecological factors

Q. Who gave rivet popper hypothesis?

1. E.P. Odum
2. Paul Ehrlich
3. Ram Deo Misra
4. A. Tansley

Q. Which of the following is correctly matched ?

1. Aerenchyma - Opuntia
2. Parthenium hysterophorus - Threat to biodiversity
3. Stratification - population
4. Age pyramid - Biome

Q. Which of the following is referred as Evil Quartet with reference to loss of biodiversity?

1. Species richness, extinctions, deforestation, erosion
2. Grazing, erosion, deforestation, species richness
3. Habitat destruction, co-extinction, deforestation, species richness
4. Habitat loss and fragmentation, overexploitation, alien species invasion, co-extinction
5. Overexploitation, grazing, decompositon, extinction

Q.

The case of Amazonian Water Hyacinth destroying the aquatic ecosystem in Indian freshwaters can be classified as ________.

1. Sacred species of plants

2. Traditional food crops

3. Medicinal plant species

4. lesser known food plants

Q. The author would most likely agree with which of the following statements?

1. Human intervention in a natural ecosystem always results in disaster.
2. The introduction of a non-native species can have unfortunate effects on the local environment.
3. A possible solution to this problem is the introduction of a natural predator of the cane toad.
4. The sugarcane farmers should have considered the potential risks before initiating their plan.

Q. Which one of the following pairs of organisms are exotic species introduced in India?

1. Nile perch, Ficus religiosa
2. Lantana, Water hyacinth
3. Ficus religiosa, Lantana
4. Water hyacinth, Prosopis cinereria

Q. Extinction of biodiversity is caused by the habitat degradation, fragmentation, over-harvesting and introduction of new species, described as

1. Evil quartet
2. Four horsemen
3. Both A and B
4. Succession

Q. The force in an ecosystem which opposes the unchecked growth of population is :

1. Mortality
2. Fecundility
3. Biotic control
4. Environmental resistance

Q.

The case of Amazonian Water Hyacinth destroying the aquatic ecosystem in Indian freshwaters can be classified as ________.

1. Habitat Fragmentation

2. Co-extinction

3. Over-exploitation

4. Alien species invasion

Q.

Alien species invasion happens when ________.

1. Sesamumindicum

2. Cocosnucifera

3. Gossypiumhirsutum

4. Taxusbaccata

Q. Evil quartet is related to

1. Loss of alien species
2. Loss of biodiversity
3. Loss of standing crop
4. Loss of climax community

Q. The phrase "evil quartet" was coined by

1. G. Donnan
2. J. Daimond
3. P. Erlich
4. None of the above

Q. Which of the following is associated with evil quartet?

1. Three horsemen
2. Hunters
3. Four horsemen
4. None of the above

Q. Which of the following is correctly matched ?

1. Parthenium hysterophorus - Threat to biodiversity
2. Stratification - population
3. Aerenchyma - Opuntia
4. Age pyramid - Biome

Q. Mosquitoes can be controlled by preventing stagnation of water though they do not live in water. Why?