Which of the following is/are not the characteristics of the Class Osteichthyes?
(i) Body is streamlined and mouth is terminal.
(ii) Gills are convered by operculum.
(iii) Skin convered with cycloid and placoid scales.
(iv) Many of them are viviparous.

Which of the following characters are seen in sharks ? (i) Body is streamlined and mouth is terminal . (ii) Gill slits are not covered by operculum . (iii) Skin is tough ,containig minute placoid scales . (iv) many of them are oviparous .

Which of the following characters are seen in sharks ? (i) Body is streamlined and mouth is terminal . (ii) Gill slits are separte not covered by operculum . (iii) Skin is tough ,containig minute placoid scales . (iv) many of them are oviparous .

Which of the following are characteristics of living beings ? (i) Respiration (ii) Reproduction (iii) Adaptation (iv) Excretion Choose the correct answer from the options below:

In which of the following pairs of temperature scales, the size of a degree is idenital ? (i) mercury scale and ideal gas scale (ii) Celsius scale and mercury scale (iii) Celsius scale and ideal gas scale (iv) ideal gas scale and absolute scale

Which of the following is the correct path taken by urine in our body? (i) Kidneys (ii) Ureters (iii) Urethra (iv) Urinary bladder " ( )"

Which of the following statements is/are correct or incorrect regarding Class Amphibia? (i) Body is divisible into head and trunk. Tail is present in some amphibians. (ii) Show respiration by gills, lungs and through skin. (iii) Has scales in all its members. (iv) Can lead dual life (aquatic and terrestrial) (v) Has eyelids.

Which of the following statements is/are correct or incorrect regarding Class Amphibia? (i) Body is divisible into head and trunk. Tail is present in some amphibians. (ii) Show respiration by gills, lungs and through skin. (iii) Has scales in all its members. (iv) Can lead dual life (aquatic and terrestrial) (v) Has eyelids.

Which of the following statements is/are correct or incorrect regarding Class Amphibia? (i) Body is divisible into head and trunk. Tail is present in some amphibians. (ii) Show respiration by gills, lungs and through skin. (iii) Has scales in all its members. (iv) Can lead dual life (aquatic and terrestrial) (v) Has eyelids.

Select the option with a correct representation of an animal to the below-mentioned class of vertebrates: I. The jawless animal in which the body is devoid of scales and paired fins. II. They have four pairs of gills that are covered by an operculum. III. The body is covered by dry and cornified skin, epidermal scales or scutes. IV. Skin is dry without glands and long bones are hollow with air cavities.