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Match the following and write correct ch...

Match the following and write correct choice in space provided
`{:(,"Animal",,"Characteristics",),(A.,"Pila",(i),"Jointed appendages",),(B.,"Cockroach",(ii),"Perching",),(C.,"Asterias",(iii),"Water vascular system",),(D.,"Torpedo",(iv),"Electric organ",),(E.,"Parrot",(v),"Presence of shell",),(F.,"Dog fish",(vi),"Placoid scales",):}`
`A. . . . . . . . " "B. . . . . . . .`
`C. . . . . . . . " "D. . . . . . . .`
`E. . . . . . . . " "F. . . . . . . .`

Text Solution

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A. `to` (v) B. `to` (ii) C. `to` (iii) D. `to` (iv) E. `to` (ii) F. `to` (vi)
A. Pila-Presence of shell Shell in Pila is an elongated structure which consists of a tubular whorl coiled around a central axis called columella. The main function of shell is to provide protection form harsh conditions.
B. Cockroach-Jointed appendages Presence of jointed appendages along with segmented body is the characteristic feature of arthropods (e.g., spiders, bees, crabs ect).
C. Asterias-Water vascular system It is the unique and characteristic feature in echinoderms. This system acts as a hydraulic system, composed of canals connecting numerous tube feet. It is very important as it helps Asterias (sea star) to move as well as to catch food. Raspiration also takes place, throgh, water vascular system.
D. Torpedo Electric organ. Torpedos are unique organisms, having two large kidney shaped electric organs. These organs are capable of generating high voltage electric shocks.
E.Parrot-Perching Birds with the feet adapted (to hold tree branches are perching birds. The passeriform birds are true perching birds with toes, three directed forward and one backward.
F. Dog fish-Placoid scales Placoid scales are tough scales that cover the skin of elasmobranchs (dog fish, sharks and rays). They are covered with hard enamel. They function of these scales is to protect against predators.
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