The number of species known and described at present ranges between:

  • A
    $1.7$ to $1.8$ million
  • B
    $2.7$ to $2.8$ million
  • C
    $5.0$ to $6.0$ million
  • D
    $1.7$ to $1.9$ million

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What is the name of the book written by Aristotle?

In which language is the nomenclature of living organisms primarily based?

Total number of all species of organisms in a given region is known as the region's

Match List-$I$ with List-$II$ and select the correct answer:
List-$I$List-$II$
$a$. Helminthology$p$. Study of insects
$b$. Entomology$q$. Study of fungi
$c$. Mycology$r$. Study of algae
$d$. Ornithology$s$. Study of birds
$e$. Phycology$t$. Study of worms

Who wrote the book $Systema$ $Naturae$?

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