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Question
Which of the following feature is common among scorpion, crab, honey bee and silver fish?
Which of the following feature is common among scorpion, crab, honey bee and silver fish?
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Solution
The correct option is A Jointed legs
The main characteristics of phylum-- Arthropoda are as fallows (i) Jointed append.ages, present in some or all somite or segments, but often modified for specialised functions like walking, clinging, jumping, etc. (ii) Bilateral symmetry. (iii) Exoskeleton of cuticle. (iv) Complex muscular system. (v) Reduced coelom. (vi) Complex digestive system. (vii) Open circulatory system. (viii) Respiration by body surface, gills. trachea (air tubes) or book lungs. (ix) paired excretory glands called coxal, antennal or maxillary glands present in some, homologous to metameric hephridial system of annelids, some with other excretory organs called malpighian tubules. (x) Nervous system with brain connected by a ring around tire gullet to a double nerve chain of ventral gangli. (xi) Sexes usually separate.
So, the correct answer is 'B'.
The main characteristics of phylum-- Arthropoda are as fallows
(i) Jointed append.ages, present in some or all somite or segments, but often modified for specialised functions like walking, clinging, jumping, etc.
(ii) Bilateral symmetry.
(iii) Exoskeleton of cuticle.
(iv) Complex muscular system.
(v) Reduced coelom.
(vi) Complex digestive system.
(vii) Open circulatory system.
(viii) Respiration by body surface, gills. trachea (air tubes) or book lungs.
(ix) paired excretory glands called coxal, antennal or maxillary glands present in some, homologous to metameric hephridial system of annelids, some with other excretory organs called malpighian tubules.
(x) Nervous system with brain connected by a ring around tire gullet to a double nerve chain of ventral gangli.
(xi) Sexes usually separate.
So, the correct answer is 'B'.
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