Biodiversity and Conservation MCQs | NCERT Biology

Read the book NCERT Biology class-12 (chapter- 13): Biodiversity and Conservation from here.

1. Question

On Earth, which of the following regions have the greatest biodiversity?

What percentage of total oxygen in the earth's atmosphere is produced by amazon forest through photosynthesis ?

Assertion: Among animals, insects are the most species rich taxonomic group.
Reason: Robert May places the global species diversity at about 7 million.

For many taxonomic groups, species inventories are not complete in :

Regions with very high level of species richness and high degree of endemism are called :

Assertion : Careful analysis of records shows that extinctions across taxa are not random.
Reason : Amphibians appear to be more vulnerable to extinction.

In the diagram given below identify A, B, C, D :

Which one of the following are maximum number of species in Amazonian Rain forest:

Which one of the following is the correct match with reference to biodiversity:

Which one of the following are Ex-situ conservation:

According to the IUCN List (2004) document of the extinction of ______ plants species has been:

____________ Found that plots with more species showed less year-to-year variation in total biomass. 

Fill in the blanks in the sentence :

According by rivet popper hypothesis loss of which rivets is obviously a more serious threat to flight safety :

Tropics (23.5°N to 23.5°S) have ___________ species as compared to temperate or polar regions.
 

Fill in blanks in the given sentence.