Arrange the number of species of organisms in tropical Amazonian rain forest in decreasing order.
(A) Fishes
(B) Birds
(C) Plants
(D) Mammals
Choose the correct answer from the options given below:
Answer & explanation
Correct answer: option 1
The correct answer is Option (1) → (C), (A), (B), (D)
(C) Plants — first. The Amazonian rain forest has the greatest biodiversity on earth. It is home to more than 40,000 species of plants, by far the largest of these four groups.
(A) Fishes — second. The rivers of the Amazon hold about 3,000 species of fishes.
(B) Birds — third. The forest has about 1,300 species of birds.
(D) Mammals — last. Mammals have the fewest species of the four, about 427.
NCERT Extract:
Patterns of Biodiversity – “… India, with much of its land area in the tropical latitudes, has more than 1,200 species of birds. A forest in a tropical region like Equador has up to 10 times as many species of vascular plants as a forest of equal area in a temperate region like the Midwest of the USA. The largely tropical Amazonian rain forest in South America has the greatest biodiversity on earth- it is home to more than 40,000 species of plants, 3,000 of fishes, 1,300 of birds, 427 of mammals, 427 of amphibians, 378 of reptiles and of more than 1,25,000 invertebrates.”