chapter 3 unit 3 biodiversity
chapter 3 unit 3 biodiversity 1. How many kinds of organisms are present on the earth? Text Book Page # 31 Ans: The earth is inhabited by at least 10 million kinds of organisms, but less than one-third of these have been studied and catalogued (put in record) by biologists. 2. Name the principal groups of organisms. Ans: Following are the principal groups of organisms: • Prokaryotes • Protists • Fungi • Plants • ...