Platypus is viviparous.

_____ is a viviparous worm.

Humans are ....... (oviparous, viviparous, ovoviviparous)

The egg laying animals are called viviparous.

Offsprings of oviparous animal are at greater risk of survival as compared to those of viviparous animals because

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.

Select the option which shows viviparous animals only.

Why are offspring of oviparous animals at a greater risk as compared to the offspring of viviparous animals.

Read the following statements and select the correct option. Statement 1 : Viviparous animals give better protection to their offspring. Statement 2 : In viviparous animals, young ones, after attaining a certain stage of growth, are delivered out of the body of female organism.

Match column I with column II and select the correct option from the gives codes. {:(A."Cartilaginous fishes",(i)"Usually external fertilisation"),(B."Bony fishes",(ii)"Internal fertilisation"),(,(iii)"Mostly oviparous"),(,(iv)"Mostly viviparous"),(,(v)"Direct development"):}