Advertisements
Advertisements
प्रश्न
Which one of the following is not a major characteristic feature of biodiversity hot spots?
पर्याय
Large number of species
Abundance of endemic species
Mostly located in the tropics
Mostly located in the polar regions
Advertisements
उत्तर
Mostly located in the polar regions
APPEARS IN
संबंधित प्रश्न
Explain, giving three reasons, why tropics show greatest levels of species diversity.
Short answer type question
Tropical regions exhibit species richness as compared to polar regions. Justify.
The 'rivet' in the rivet popper hypothesis is considered to represent the ______.
Extent of global diversity of invertebrates is shown in the pie diagram below. Choose the most appropriate alternative that the four portions (a-d) represent.
On a log scale the relationship of species richness and area becomes linear (straight line) and is given by the equation.
In the equation: log S = log C + Z log A , S= species richness; Z = slope of line (regression coefficient); A = area; C = Y intercept. For smaller area, the value of Z ranges from ____________.
With reference to graph select the correct alternative
Species richness - area relationship is given by ______.
Oxygen dissociation curve for Myoglobin has the following shape:
Amongst the animal group given below, which one has the highest percentage of endangered species?
Which of these is true about tropical environments?
Amongst the animal groups given below, which one appears to be more vulnerable to extinction?
There is greater biodiversity in tropical /subtropical regions than in temperate region. Explain.
Lesser variation in biomass production over a period of time is called ______.
The species-area relationship is represented on a log scale as ______.
For frugivorous (fruit-eating) birds and mammals in the tropical forests of different continents, the slope of the species-area relationship is found to be approximately ______.
Which of the following hypothesis suggests that ecosystems are like aeroplanes where flight safety (ecosystem functioning) may or may not be compromised, depending upon which species are being lost?
Alexander von Humboldt observed that, within a region species richness ______ with increasing explored area.
Who observed that within a region, species richness increased with increasing explored area, to a certain limit?
Which of the following characteristics are seen in a stable community?
- It is strong enough to withstand environmental disturbance and recovers quickly.
- It is resistant to invasive species.
- It exhibits constant change in biomass production over a period of time.
- It has more species diversity.
