How many species of orchids are present on Earth?

Category: QuestionsHow many species of orchids are present on Earth?
Editor">Editor Staff asked 2 weeks ago

How many species of orchids are present on Earth?
 
(a) 200
 
(b) 20
 
(c) 2
 
(d) 20,000
 
The question was posed to me in class test.
 
Query is from Biodiversity Basics in section Biodiversity and Conservation of Biology – Class 12

1 Answers
Editor">Editor Staff answered 2 weeks ago

Right choice is (d) 20,000
 
Explanation: An orchid growing on epiphyte is an example of commensalism. Epiphytes grow on trees for air and sunlight while the tree is not harmed due to its presence. Another epiphyte growing on trees is a fern. There are approximately 20,000 species of orchids on Earth.