NTA Abhyas NEET2020BotanyAnimal KingdomPractice
Arrange the number of species of phylum Arthropoda ( A) , phylum Chordata ( B), and phylum Mollusca ( C) in ascending order.
Options
- AB < C < A
- BB < A < C
- CC = B < A
- DC < B < A
Correct answer
A. B < C < A
Step-by-step solution
The number of species in phylum Arthropoda A is more than 1.3 billion because insects form the most species-rich taxonomic group (>70% of the total animals). Phylum Mollusca C is the second largest phylum with approximately 90000+ species. Phylum Chordata B has approximately 60,000 species, among which, half of the species are fishes.