Advertisements
Advertisements
प्रश्न
Amongst the animal groups given below, which one appears to be more vulnerable to extinction?
पर्याय
Insects
Mammals
Amphibians
Reptiles
Advertisements
उत्तर
Amphibians
Explanation:
About 32 percent of amphibian species are at risk due to factors like habitat loss, pollution, and environmental changes. This vulnerability is higher compared to insects, reptiles, and mammals. The decline is largely caused by habitat destruction, environmental sensitivity, and other human-induced factors, making amphibians one of the most threatened groups in biodiversity conservation efforts.
APPEARS IN
संबंधित प्रश्न
The following graph shows the species-area relationship. Answer the following questions as directed.
(a) Name the naturalist who studied the kind of relationship shown in the graph. Write the observations made by him.
(b) Write the situations as discovered by the ecologists when the value of ‘Z’
(Slope of the line) lies between:
- 0.1 and 0.2
- 0.6 and 1.2
What does ‘Z’ stand for?
(c) When would the slope of the line ‘b’ become steeper?
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.
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 ______.
Select the correct alternative for x and y.
Oxygen dissociation curve for Myoglobin has the following shape:
Which of the below mentioned regions exhibit lees seasonal variations?
Which of these is true about tropical environments?
The pattern of biodiversity is affected by ______.
Which of the following countries has the highest biodiversity?
Which one of the following is not a major characteristic feature of biodiversity hot spots?
There is greater biodiversity in tropical /subtropical regions than in temperate region. Explain.
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 ______.
Alexander von Humboldt observed that, within a region species richness ______ with increasing explored area.
Rivet Popper Hypothesis is an analogy to explain the significance of ______.
When pre-reproductive and post - reproductive age group is same in structure, the population is______.
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.
The altitudinal gradient describes a pattern where species diversity is greatest at which elevation?
Which of the following environmental conditions becomes harsher as altitude increases on a mountain slope?
What does the variable S represent in the species-area formula log S = log C + Z log A?
What does the variable Z represent in the species-area relationship formula log S = log C + Z log A?
What does the variable C represent in the species-area relationship formula log S = log C + Z log A?
For very large areas such as entire continents, what is the typical range of the Z value in the species-area relationship?
Which of the following ecosystems would be predicted to have the highest species richness based on the latitudinal and species-area principles?
