Diversity in Living Organisms MCQ 1
17. Which of the following is not a criterion for classification of living organisms?
(a) Body design of the organism
(b) Ability to produce one’s own food
(c) Membrane bound nucleus and cell organelles
(d) Height of the plant
Ans. (d) Height of the plant
Explanation: A small shrub and a large tree; both belong to angiosperms. This shows that heights of a plant cannot be a criterion for classification.
18. The feature that is not a characteristic of protochordata?
(a) Presence of notochord
(b) Bilateral symmetry and coelom
(c) Jointed legs
(d) Presence of circulatory system
Ans. (c) Jointed legs
Explanation: jointed legs are found in arthropoda; which does not belong to chordata.
19. The locomotory organs of Echinodermata are
(a) tube feet
(b) muscular feet
(c) jointed legs
(d) parapodia
Ans. (a) tube feet
20. Corals are
(a) Poriferans attached to some solid support
(b) Cnidarians, that are solitary living
(c) Poriferans present at the sea bed
(d) Cnidarians that live-in colonies
Ans. (d) Cnidarians that live-in colonies
21. Who introduced the system of scientific nomenclature of organisms
(a) Robert Whittaker
(b) Carolus Linnaeus
(c) Robert Hooke
(d) Ernst Haeckel
Ans. (b) Carolus Linnaeus
Explanation: It was Carolus Linnaeus who proposed binomial nomenclature of organisms.
22. Two chambered heart occurs in
(a) crocodiles
(b) fish
(c) aves
(d) amphibians
Ans. (b) fish
Explanation: Amphibians have three-chambered heart. Crocodiles and aves have fourchambered heart.
23. Skeleton is made entirely of cartilage in
(a) Sharks
(b) Tuna
(c) Rohu
(d) None of these
Ans. (a) Sharks
Explanation: Sharks belong to cartilaginous fish; while others belong to bony fish.
24. One of the following is not an Annelid
(a) Nereis
(b) Earthworm
(c) Leech
(d) Urchins
Ans. (d) Urchins
Explanation: Sea urchins belong to coelenterate.
25. The book Systema Naturae was written by
(a) Linnaeus
(b) Haeckel
(c) Whittaker
(d) Robert Brown
Ans. (a) Linnaeus
26. Karl Von Linne was involved with which branch of science?
(a) Morphology
(b) Taxonomy
(c) Physiology
(d) Medicine
Ans. (b) Taxonomy
27. Real organs are absent in
(a) Mollusca
(b) Coelenterata
(c) Arthropoda
(d) Echinodermata
Ans. (b) Coelenterata
Explanation: Coelenterates show tissue level of organization and hence real organs are absent in them.
28. Hard calcium carbonate structures are used as skeleton by
(a) Echinodermata
(b) Protochordata
(c) Arthropoda
(d) Nematoda
Ans. (a) Echinodermata
29. Differentiation in segmental fashion occurs in
(a) Leech
(b) Starfish
(c) Snails
(d) Ascaris
Ans. (a) Leech
Explanation: Leech belongs to annelida which show segmentation in body.
30. In taxonomic hierarchy family comes between
(a) Class and Order
(b) Order and Genus
(c) Genus and Species
(d) Division and Class
Ans. (b) Order and Genus
Explanation: The sequence is: Division→ Class→ Order→ Family→ Genus→ Species.
31. 5-Kingdom classification has given by
(a) Morgan
(b) R. Whittaker
(c) Linnaeus
(d) Haeckel
Ans. (b) R. Whittaker
32. Well defined nucleus is absent in
(a) blue green algae
(b) diatoms
(c) algae
(d) yeast
Ans. (a) blue green algae
Explanation: Blue green algae belong to monera which are prokaryotes and hence welldefined nucleus in absent in them.
33. The ‘Origin of Species’ is written by
(a) Linnaeus
(b) Darwin
(c) Hackel
(d) Whittaker
Ans. (b) Darwin
34. Meena and Hari observed an animal in their garden. Hari called it an insect while Meena said it was an earthworm. Choose the character from the following which confirms that it is an insect.
(a) Bilateral symmetrical body
(b) Body with jointed legs
(c) Cylindrical body
(d) Body with little segmentation
Ans. (b) Body with jointed legs
Explanation: Presence of jointed legs is a salient feature of arthropoda and insects belong to arthropoda.
