Shrimp and Prawn
`{: ( "Shrimp", "Prawn"),( "Shrimp has lamellar gills.", "Prawns have branching gills."),("Shrimp have claws on two of their five pairs of legs.","Prawns have claws on three of their five pairs of legs.") :}`

Marine water prawn culture and Freshwater prawn culture. {: ( "Marine water prawn culture", "Freshwater prawn culture"),( "The rearing of marine penaied prawn is called marine prawn culture or shrimp culture.", "The rearing of freshwater prawn is called fresh water prawn culture."):}

Column I, Column II The number of five-digit numbers having the product of digit 20 is, p. > 70 A closest has five pairs of shoes. The number of ways in which four shoes can be drawn from it such that there will be no complete pair is, q. <60 Three ladies have each brought their one child for admission to a school. The principal wants to interview the six persons one by one subject to the condition that no mother is interviewed before her child. The number of ways in which interview can be arranged is, r. in (50 ,110) The figures 4, 5, 6, 7, 8 are written in every possible order. The number of numbers greater than 56000 is, s. in (40 ,70)

Within few days of fertilization, the cges hatch into tadpoles. A newly hatched tadpole lives off the yolk stored in its body. It gradually grows larger and develops three pairs of gills. The tadpole grows and metamorphosis into an air-breathing carnivorous adult frog (Figure). Legs grow from the body, and the tail and gills disappear. The mouth broadens, developing teeth and jaws, and the lungs become functional

A test consists of 10 multiple choice questions . In how many ways can the test be answered if (i) Each question has four choices ? (ii) The first four questions have three choices and the remaining have five choices ? (iii) Question number n has n + 1 choices ?

Identify the correct statements from the below about "Mammals". (1) Presence of mammary glands is the 'unique feature of mammals. (II) Have two pairs of limbs. (III) Have three chambered heart. (IV) External cars or pinnae are present.