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Starfish is

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Important Questions on Classification

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In which one of the following phyla is the body segmented?
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Body having meshwork of cells, internal cavities lined with food filtering flagellated cells and indirect development are the characteristics of phylum:
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Which of the following characteristics is mainly responsible for the diversification of insects on land?
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Which one of the following living organisms completely lacks a cell wall?
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The animals in which cleavages are radial and indeterminate and possess enterocoelom are generally:
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Match the following organisms with their respective characteristics:
  Column – I   Column – II
(a) Pila (i) Flame cells
(b) Bombyx (ii) Comb plates
(c) Pleurobrachia (iii) Radula
(d) Taenia (iv) Malpighian tubules

Select the correct option from the following:
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Match the type of cells given in Column I with organisms given in Column II. Choose the appropriate combination from the options below.
 
Column-I Column-II
P Flame cells i Sponges
Q Collar cells ii Hydra
R Stinging cells iii Planaria
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Bilaterally symmetrical and acoelomate animals are exemplified by
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Study the following table and pick up the correct combinations.

S.No Class Common name of animals Special feature
I) Echinoidea Sea urchins Aristotle's lantern
II) Cephalopoda Clams Crystalline style
III) Holothuroidea Sea cucumbers Respiratory trees
IV) Gastropoda Squids Torsion
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Which of the following features is not present in the phylum Arthropoda?
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Select the taxon that represents both marine and freshwater species.
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Read the following statements.
(a) Metagenesis is observed in Helminths.
(b) Echinoderms are triploblastic and coelomate animals.
(c) Round worms have organ-system level of body organization.
(d) Comb plates present in ctenophores help in digestion.
(e) Water vascular system is characteristic of Echinoderms.
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Planaria possess high capacity of:
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In the case of Poriferans, the spongocoel is lined with flagellated cells called
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Match the following columns and select the correct option.

  Column-I   Column-II
(a) Gregarious, polyphagous pest (i) Asterias
(b) Adult with radial symmetry and larva with bilateral symmetry (ii) Scorpion
(c) Book lungs (iii) Ctenoplana
(d) Bioluminescence (iv) Locusta
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All vertebrates are chordates but all chordates are not vertebrates, why?
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Which of the following options does correctly represent the characteristic features of phylum Annelida?
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The chitinous exoskeleton of arthropods is formed by the polymerization of:
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Match the following
  Larva   Animals
A Bipinnaria I Sea urchins
B Auricularia II Brittle stars
C Ophiopluteus III Starfishes
D Doliolaria IV Sea lilies
E Echinopluteus V Sea cucumbers

The correct match is

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Study the following and pick up the correct statements:
I) Aristotle's lantern is found in echinoids
II) Glochidium is the larva of cephalopods
III) Scorpions respire with book lungs.
IV) Parapodia are found in oligochaetes