Alexander Von Humbolt described for the first time: (1) Laws of limiting factor (2) Species area relationships (3) Population Growth equation (4) Ecological Biodiversity

Alexander Von Humbolt described for the first time:
(1) Laws of limiting factor
(2) Species area relationships
(3) Population Growth equation
(4) Ecological Biodiversity
by

1 Answer

Answer :

(2) Species area relationships
by

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Alexander von Humboldt described for the first time (a) laws of limiting factor (b) species area relationships (c) population growth equation (d) ecological biodiversity.

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Last Answer : (b) species area relationships

38. “Increased diversity contributed to higher productivity” –was experimentally proved by ... b) David Tilman b) Paul Ehrlich c) Alexander Von Humbolt d) Robert May

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Which is density independent factor limiting population growth?

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Independent factor limiting population growth?

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An association of individuals of different species living in the same habitat and having functional interactions is (a) ecosystem (b) population (c) ecological niche (d) biotic community.

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The relation between specises richness and area is described on a logarithmic scale by the equation [where S = species richness, A = area, Z = slope o

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The population of an insect species shows an explosive increase in numbers during rainy season followed by its disappearance at the end of the season. What does this show? (a) The food plants mature and die at the end of the rainy season. (b) Its population growth curve is of J-type. (c) The population of its predators increases enormously. (d) S-shaped or sigmoid growth of this insect.

Description : The population of an insect species shows an explosive increase in numbers during rainy season followed by its disappearance at the end of the season. What does this show? (a) The food plants ... The population of its predators increases enormously. (d) S-shaped or sigmoid growth of this insect.

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Biodiversity loss occurs due to (i) habitat loss and fragmentation (ii) co-extinction (iii) over-exploitation (iv) alien species invasion.

Description : Biodiversity loss occurs due to (i) habitat loss and fragmentation (ii) co-extinction (iii) over-exploitation (iv) alien species invasion.

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Which of the following is an example of alien species invading a new ecosystem resulting in biodiversity losses ?

Description : Which of the following is an example of alien species invading a new ecosystem resulting in biodiversity losses ?

Last Answer : Which of the following is an example of alien species invading a new ecosystem resulting in biodiversity ... into Indian rivers D. All of the above

Which of the following represent maximum number of species among global biodiversity

Description : Which of the following represent maximum number of species among global biodiversity

Last Answer : Which of the following represent maximum number of species among global biodiversity A. Algae B. Lichens C. Fungi D. Mosses and Ferns

Man-made mass extinction of species represents a severe depletion of biodiversity called

Description : Man-made mass extinction of species represents a severe depletion of biodiversity called

Last Answer : Man-made mass extinction of species represents a severe depletion of biodiversity called A. ... C. Anthropogenic extinction D. Human extinction

Which one of the following is not observed in biodiversity hotspots? (a) Lesser inter-specific competition (b) Species richness (c) Endemism (d) Accelerated species loss

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Select the correct statement about biodiversity. (a) The desert areas of Rajasthan and Gujarat have a very high level of desert animal species as well as numerous rare animals. (b) Large scale planting of Bt cotton has no adverse effect on biodiversity. (c) Western ghats have a very high degree of species richness and endemism. (d) Conservation of biodiversity is just a fad pursued by the developed countries.

Description : Select the correct statement about biodiversity. (a) The desert areas of Rajasthan and Gujarat have a very high level of desert animal species as well as numerous rare animals. (b) Large scale ... and endemism. (d) Conservation of biodiversity is just a fad pursued by the developed countries.

Last Answer : (c) Western ghats have a very high degree of species richness and endemism.

Cryopreservation of gametes of threatened species in viable and fertile condition can be referred to as (a) in situ conservation by sacred groves (b) in situ cryo-conservation of biodiversity (c) in situ conservation of biodiversity (d) advanced ex situ conservation of biodiversity.

Description : Cryopreservation of gametes of threatened species in viable and fertile condition can be referred to as (a) in situ conservation by sacred groves (b) in situ cryo-conservation of biodiversity (c) in situ conservation of biodiversity (d) advanced ex situ conservation of biodiversity.

Last Answer : (d) advanced ex situ conservation of biodiversity.

The Earth Summit held in Rio de Janeiro in 1992 was called (a) for immediate steps to discontinue use of CFCs that were damaging the ozone layer (b) to reduce CO2 emissions and global warming (c) for conservation of biodiversity and sustainable utilisation of its benefits (d) to assess threat posed to native species by invasive weed species.

Description : The Earth Summit held in Rio de Janeiro in 1992 was called (a) for immediate steps to discontinue use of CFCs that were damaging the ozone layer (b) to reduce CO2 emissions and global ... utilisation of its benefits (d) to assess threat posed to native species by invasive weed species.

Last Answer : (c) for conservation of biodiversity and sustainable utilisation of its benefits

Biodiversity of a geographical region represents (a) endangered species found in the region (b) the diversity in the organisms living in the region (c) genetic diversity in the dominant species of the region (d) species endemic to the region.

Description : Biodiversity of a geographical region represents (a) endangered species found in the region (b) the diversity in the organisms living in the region (c) genetic diversity in the dominant species of the region (d) species endemic to the region.

Last Answer : (b) the diversity in the organisms living in the

Which of the following represent maximum number of species among global biodiversity? (a) Fungi (b) Mosses and Ferns (c) Algae (d) Lichens

Description : Which of the following represent maximum number of species among global biodiversity? (a) Fungi (b) Mosses and Ferns (c) Algae (d) Lichens

Last Answer : (a) Fungi

Which one of the following is not a major characteristic feature of biodiversity hot spots? A. Large number of species B. Abundance of endemic species C. Mostly located in the tropics D. Mostly located in the polar regions

Description : Which one of the following is not a major characteristic feature of biodiversity hot spots? A. Large number of species B. Abundance of endemic species C. Mostly located in the tropics D. Mostly located in the polar regions

Last Answer : D. Mostly located in the polar regions

Which of the following is not a cause for loss of biodiversity? A. Destruction of habitat B. Invasion by alien species C. Keeping animals in zoological parks D. Over-exploitation of natural resources

Description : Which of the following is not a cause for loss of biodiversity? A. Destruction of habitat B. Invasion by alien species C. Keeping animals in zoological parks D. Over-exploitation of natural resources

Last Answer : C. Keeping animals in zoological parks

Which one of the following is not a major characteristic feature of biodiversity hot spots? A. Large number of species B. Abundance of endemic species C. Mostly located in the tropics D. Mostly located in the polar regions

Description : Which one of the following is not a major characteristic feature of biodiversity hot spots? A. Large number of species B. Abundance of endemic species C. Mostly located in the tropics D. Mostly located in the polar regions

Last Answer : D. Mostly located in the polar regions

Which of the following is not a cause for loss of biodiversity? A. Destruction of habitat B. Invasion by alien species C. Keeping animals in zoological parks D. Over-exploitation of natural resources

Description : Which of the following is not a cause for loss of biodiversity? A. Destruction of habitat B. Invasion by alien species C. Keeping animals in zoological parks D. Over-exploitation of natural resources

Last Answer : C. Keeping animals in zoological parks

Select the action of vasopressin exerted through the V1 subtype receptors: A. Release of coagulation factor VIII and von Willebrands factor from vascular endothelium B. Increased peristalsis of gut C. Dilatation of blood vessels D. Increased water permeability of renal collecting ducts

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Last Answer : B. Increased peristalsis of gut

What is the answer and how did you get it using the balanced equation from problem 4 Determine the limiting reagent if you start with 200 grams of sodium hydroxide and 100 grams of sulfuric acid?

Description : What is the answer and how did you get it using the balanced equation from problem 4 Determine the limiting reagent if you start with 200 grams of sodium hydroxide and 100 grams of sulfuric acid?

Last Answer : The chemical equation is:2 NaOH + H2SO4 = Na2SO4 + 2 H2OMolar mass of sodium hydroxide is 39,9971 g; molar mass of sulfuric acid is 98,079 g.2 . 39,9971 g NaOH----------------------98,079 g H2SO4200 g ... ---------xx = (200 x 98,079)/2 . 39,9971 = 245 g H2SO4So sulfuric acid is the limiting reagent.

The limiting factors on the population of arctic foxes is?

Description : The limiting factors on the population of arctic foxes is?

Last Answer : density dependent

A limiting amino acid is an essential amino acid (A) That is most deficient in proteins (B) That is most excess in proteins (C) That which increases the growth (D) That which increases the weight gain

Description : A limiting amino acid is an essential amino acid (A) That is most deficient in proteins (B) That is most excess in proteins (C) That which increases the growth (D) That which increases the weight gain

Last Answer : Answer : A