CBSE Class 9 Science – MCQ and Online Tests – Biology- Unit 3 – Diversity in Living Organisms
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CBSE Class 9 Science – MCQ and Online Tests – Biology- Unit 3 – Diversity in Living Organisms
Question 1.
Which one is the most striking or (common) character of the vertebrates?
(a) Presence of notochord
(b) Presence of triploblastic condition
(c) Presence of gill pouches
(d) Presence of coelom
Answer
Answer: (a) Presence of notochord
Question 2.
Differentiation in segmental fashion occurs in
(a) Leech
(b) Starfish
(c) Snails
(d) Ascaris
Answer
Answer: (a) Leech
Question 3.
Which among the following is exclusively marine?
(a) Porifera
(b) Echinodermata
(c) Mollusca
(d) Pisces
Answer
Answer: (b) Echinodermata
Question 4.
Which among the following have open circulatory system?
(i) Arthropoda
(ii) Mollusca
(iii) Annelida
(iv) Coelenterata
(a) (i) and (ii)
(b) (iii) and (iv)
(c) (i) and (iii)
(d) (ii) and (iv)
Answer
Answer: (a) (i) and (ii)
Question 5.
In which group of animals, coelom is filled with blood?
(a) Arthropoda
(b) Annelida
(c) Nematoda
(d) Echinodermata
Answer
Answer: (a) Arthropoda
Question 6.
In taxonomic hierarchy family comes between
(a) Class and Order
(b) Order and Genus
(c) Genus and Species
(d) Division and Class
Answer
Answer: (b) Order and Genus
Question 7.
Hard calcium carbonate structures are used as skeleton by
(a) Echinodermata
(b) Protochordata
(c) Arthropoda
(d) Nematoda
Answer
Answer: (a) Echinodermata
Question 8.
Elephantiasis is caused by
(a) Wuchereria
(b) Pinworm
(c) Planarians
(d) Liver flukes
Answer
Answer: (a) Wuchereria
Question 9.
Well defined nucleus is absent in
(a) blue green algae
(b) diatoms
(b) algae
(d) yeast
Answer
Answer: (a) blue green algae
Question 10.
Which among the following produce seeds?
(a) Thallophyta
(b) Bryophyta
(c) Pteridophyta
(d) Gymnosperms
Answer
Answer: (d) Gymnosperms
Question 11.
Which among the following have scales?
(i) Amphibians
(ii) Pisces
(iii) Reptiles
(iv) Mammals
(a) (i) and (iii)
(b) (iii) and (iv)
(c) (ii) and (iii)
(d) (i) and (ii)
Answer
Answer: (c) (ii) and (iii)
Question 12.
Find out the false statement.
(a) Aves are warm-blooded, egg laying and have four-chambered heart.
(b) Aves have feather covered body, forelimbs are modified as wing and breathe through lungs.
(c) Most of the mammals are viviparous.
(d) Fishes, amphibians and reptiles are oviparous.
Answer
Answer: (d) Fishes, amphibians and reptiles are oviparous.
Question 13.
Pteridophyta do not have
(a) root
(b) stem
(c) flowers
(d) leaves
Answer
Answer: (c) flowers
Question 14.
Identify a member of porifera
(a) Spongilla
(b) Euglena
(c) Penicillium
(d) Hydra
Answer
Answer: (a) Spongilla
Question 15.
Which is not an aquatic animal?
(a) Hydra
(b) Jelly fish
(c) Corals
(d) Filaria
Answer
Answer: (d) Filaria
Question 16.
Amphibians do not have the following
(a) Three-chambered heart
(b) Gills of lungs
(c) Scales
(d) Mucus glands
Answer
Answer: (c) Scales
Question 17.
Organisms without nucleus and cell organelles belong to
(i) fungi
(ii) protista
(iii) cyano bacteria
(iv) archae bacteria
(a) (i) and (ii)
(b) (iii) and (iv)
(c) (i) and (iv)
(d) (ii) and (iii)
Answer
Answer: (b) (iii) and (iv)
Question 18.
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
Answer
Answer: (d) Height of the plant
Question 19.
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
Answer
Answer: (c) Jointed legs
Question 20.
The locomotory organs of Echinodermata are
(a) tube feet
(b) muscular feet
(c) jointed legs
(d) parapodia
Answer
Answer: (a) tube feet
Question 21.
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
Answer
Answer: (d) Cnidarians that live in colonies
Question 22.
Which one is a true fish?
(a) Jellyfish
(b) Starfish
(c) Dogfish
(d) Silverfish
Answer
Answer: (c) Dogfish
Question 23.
Who introduced the sytem of scientific nomenclature of organisms?
(a) Robert Whittaker
(b) Carolus Linnaeus
(c) Robert Hooke
(d) Ernst Haeckel
Answer
Answer: (b) Carolus Linnaeus
Question 24.
Two chambered heart occurs in
(a) crocodiles
(b) fish
(c) aves
(d) amphibians
Answer
Answer: (b) fish
Question 25.
Skeleton is made entirely of cartilage in
(a) Sharks
(b) Tuna
(c) Rohu
(d) None of these
Answer
Answer: (a) Sharks
Question 26.
One of the following is not an Annelid?
(a) Nereis
(b) Earthworm
(c) Leech
(d) Urchins
Answer
Answer: (d) Urchins
Question 27.
The book Systema Naturae was written by
(a) Linnaeus
(b) Haeckel
(c) Whittaker
(d) Robert Brown
Answer
Answer: (a) Linnaeus
Question 28.
Karl Von Linne was involved with which branch of science?
(a) Morphology
(b) Taxonomy
(c) Physiology
(d) Medicine
Answer
Answer: (b) Taxonomy
Question 29.
5-Kingdom classification has given by
(a) Morgan
(b) R. Whittaker
(c) Linnaeus
(d) Haeckel
Answer
Answer: (b) R. Whittaker
Question 30.
Real organs are absent in
(a) Mollusca
(b) Coelenterata
(c) Arthropoda
(d) Echinodermata
Answer
Answer: (b) Coelenterata
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