Subphylum Crustacea: Class Malacostraca
Embryos of brine shrimp live in salty
lakes only
pond only
rivers
lakes and ponds
lakes and ponds
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First period is enlarged and contain chelate, named as:A. cheliped
B. centipede
C. fangs
D. peristome
Lens system of crayfish is composed of receptor that ranges in number from 25 to:
A. 1400
B. 1450
C. 160
D. 14000
Circulation of water over gills is carried out with help of:
A. cephalothoracic appendages
B. scaphognathite
C. peripods
D. operculum
Ecdysone is hormone released by the:
A. xiphosura
B. X-organ
C. Y-organ
D. uropod
In crustaceans, appendages from 9-13 are called as:
A. endopodite
B. scaphognathite
C. peripods
D. protopodia
Maxilla contains gills and a bladelike structure, called:
A. scaphognathite
B. ectoprocts
C. pheromones
D. operculum
Daphnia is an example of class
A. branchiopoda
B. copepoda
C. cirripedia
D. gastropoda
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