NCERT Class-9 Science Solutions: Chapter 7-Diversity in Living Organisms Part 4 (For CBSE, ICSE, IAS, NET, NRA 2023)

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Question 21:

Who introduced the system of scientific nomenclature of organisms?

  1. Robert Whittaker
  2. Carolus Linnaeus
  3. Robert Hooke
  4. Ernst Haeckel

Answer: B

Image the Carolus Linnaeus

Question 22:

Two chambered heart occurs in

  1. Crocodiles
  2. Fish
  3. Aves
  4. Amphibians

Answer: B

Image Thefish and Two Chambered Heart

Question 23:

Skeleton is made entirely of cartilage in

  1. Sharks
  2. Tuna
  3. Rohu
  4. None of these

Answer: A

Image the Cartilage in Shark

Question 24:

One of the following is not an Annelid

  1. Nereis
  2. Earthworm
  3. Leech
  4. Urchins

Answer: D

Image the Annelid

Question 25:

The book System Nature was written by

  1. Linnaeus
  2. Haeckel
  3. Whittaker
  4. Robert Brown

Answer: A

Question 26:

Karl Von Lin ne was involved with which branch of science?

  1. Morphology
  2. Taxonomy
  3. Physiology
  4. Medicine

Answer: B

Question 27:

Real organs are absent in

  1. Mollusca
  2. Coelenterate
  3. Arthropoda
  4. Echinodermata

Answer: B

Image the Coelenterate