Question:
How many number of biodiversity hotspots in the world right now?
How many number of biodiversity hotspots in the world right now?
Show Hint
To qualify as a biodiversity hotspot, a region must have at least 1,500 endemic vascular plants and 70% habitat loss.
Updated On: Jul 17, 2025
- 9
- 14
- 25
- 34
Hide Solution
Verified By Collegedunia
The Correct Option is D
Solution and Explanation
According to Conservation International, there are currently 34 biodiversity hotspots in the world.
These are regions with exceptional levels of species richness and endemism but are threatened by human activities.
These are regions with exceptional levels of species richness and endemism but are threatened by human activities.
Was this answer helpful?
0
0
Top Questions on Biodiversity and Conservation
- India has only 2.4% of the world's land area but its share of the global species diversity is:
- CBSE CLASS XII - 2025
- Biology
- Biodiversity and Conservation
- Student to attempt either option-(A) or (B): (A)
- [(i)] How does alien species invasion cause a decline in biodiversity? Explain.
How have the following contributed to biodiversity loss?- I. Nile Perch
- II. Lantana and Eichhornia
- III. Clarias gariepinus
- [(ii)] Why have certain regions been declared as biodiversity hotspots by environmentalists of the world? Name any two such regions in India.
(B)- [(i)] Write an equation for Verhulst-Pearl Logistic Growth Curve where:
N = Population density at time ‘t’
r = Intrinsic rate of natural increase - [(ii)] Draw a graph for a population whose population density has reached carrying capacity.
- [(iii)] Draw a growth curve where resources are non-limiting to growth of population.
- [(iv)] Which growth curve is considered more realistic and why? Explain.
- CBSE CLASS XII - 2025
- Biology
- Biodiversity and Conservation
- [(i)] How does alien species invasion cause a decline in biodiversity? Explain.
- India has only 2.4% of the world's land area but its share of the global species diversity is:
- CBSE CLASS XII - 2025
- Biology
- Biodiversity and Conservation
Answer the following questions:
- Explain how the process of RNA interference technology is used effectively to prevent infestation of the roots of tobacco plant by the nematode Meloidogyne incognita.
OR - Explain how more than a billion copies of a fragment of DNA are formed using the technique of PCR.
- CBSE CLASS XII - 2025
- Biology
- Biodiversity and Conservation
- Explain how the process of RNA interference technology is used effectively to prevent infestation of the roots of tobacco plant by the nematode Meloidogyne incognita.
- Answer the following questions:
-
- [(i)] Describe the Species-Area relationship as observed by Alexander von Humboldt, for a wide variety of taxa in nature.
- [(ii)] Draw the graph showing Species-Area relationship for \( S = CA^Z \). What is the significance of ‘\( Z \)’ in Species-Area relationship?
-
- [(i)] Describe the logistic population growth curve with the help of a suitable graphical representation.
- [(ii)] Write the equation of Verhulst-Pearl logistic growth curve and explain what ‘\( K \)’ and ‘\( r \)’ suggest in the given equation.
- CBSE CLASS XII - 2025
- Biology
- Biodiversity and Conservation
-
View More Questions
Questions Asked in CBSE Compartment XII exam
- If a colour-blind woman marries a person whose mother is colour-blind, then what is the probability of colour blindness in their offspring?
- CBSE Compartment XII - 2025
- Principles of Inheritance and Variation
- Which one is not determined in the developing foetus by using amniocentesis?
- CBSE Compartment XII - 2025
- Reproductive Health
- Who proposed the competitive exclusion principle?
- CBSE Compartment XII - 2025
- Organisms and Populations
- How many billion tons productivity of oceans?
- CBSE Compartment XII - 2025
- Ecosystems
- Assertion (A): Apple is false fruit.
Reason (R): Thalamus also contributes to fruit formation in apple.- CBSE Compartment XII - 2025
- sexual reproduction in flowering plants
View More Questions