unacademy QUE. 8 Which one of the following has the embedded scales in the skin ? Siren Kair Triturus Chin Vrin Uraeotyphlus Shiv Aks Xenopus Ror PRANAVLIVE

Which one of the following has the embedded sclaes in the skin?

Which one of the following has the embedded sclaes in the skin?

Which one of the following has the embedded sclaes in the skin?

Which one of the following has the embedded sclaes in the skin?

Which one of the folloWing amphibia has dermal scales in its skin :-

The meehanism behind nut and bolt arrangement also works for screw gauge. In case of nut and bolt mechanism, with rotation of bolt, it has translational movement also. In one complete rotation of bolt, tip of bolt moves by a linear distance equal to linear distance between two consecutive threads on the screw, known as pitch in case of screw gauge, the circular scale is divided in several parths. The ratio of pitch and total number of divisions on circular scale is known as least count. Spherometer is a device used to measure very small distances such as radius of curvature and thicness of thin plate. The screw gauge can be used to meaure diameter of a spherical sample. A screw gauge has 100 divisions on head scale and in 8 rotations distance covered is 8 mm. A screw gauge has which of the following characteristics ?

Which of the following statements are true// false A. In Torpedo the electric organs are capable of generating strong strong electric shock to paralyze the prey B. Bony fishes use pectoral, pelvic, dorsal, anal and caudal fins in swimming C. Amphibians skin is moist and has thick scales D. Birds are poikilothermous animals E. The most unique mammalian characteristic is the presence of milk producing mammary glands by which the young ones are nourished