MEDIUM
Earn 100

Members of which phylum lack a well-defined circulatory system and respiratory system?
(a)Aschelminthes
(b)Annelida
(c)Arthropoda
(d)Hemichordata

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Important Questions on Animal Kingdom
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Column-I | Column-II |
Flame cells | Sponges |
Collar cells | Hydra |
Stinging cells | Planaria |

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(i) Body is covered by tough and protective collagenous cuticle
(ii) Excretory system consists of renette gland and ducts
(iii) Alimentary canal is incomplete
(iv) Sense organs like amphids and plasmids occur
(v) Sexes are not separate (Monoecious)

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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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Column – I | Column – II | ||
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Pila | Flame cells | ||
Bombyx | Comb plates | ||
Pleurobrachia | Radula | ||
Taenia | Malpighian tubules |
Select the correct option from the following:

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Observe the following simplified scheme and choose the correct option that matches with the letters given in the boxes.

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