Which of the following organisms are known as chief producers in the oceans? Option 1 : DinoflagellatesOption 2 : EuglenoidsOption 3 : CyanobacteriaOption 4 : Diatoms

Which of the following animals does not undergo metamorphosis? Option 1 : TunicateOption 2 : MothOption 3 : EarthwormOption 4 : Starfish

Which of the following features is used to identify a male cockroach from a female cockroach? Option 1 : Presence of a boat shaped sternum on the 9th abdominal segment.Option 2 : Forewings with darker tegminaOption 3 : Presence of caudal stylesOption 4 : Presence of anal cerci

Which one of these animals is not a homeotherm? Option 1 : MacropusOption 2 : PsittaculaOption 3 : CamelusOption 4 : Chelone

Ciliates differ from all other protozoans in Option 1 : Using flagella for lovcomotionOption 2 : Having a contractile vacuole for removing excess waterOption 3 : Having two types of nucleiOption 4 : Using pseudopodia for capturing prey

Identify the vertebrate group of animals characterized by crop and gizzard in its digestive system. Option 1 : OsteichthyesOption 2 : AmphibiaOption 3 : ReptiliaOption 4 : Aves

Calcium is important in skeletal muscle contraction because it Option 1 : Activates the myosin ATPase by binding to it.Option 2 : Detaches the myosin head from the actin filament.Option 3 : Prevents the formation of bonds between the myosin cross bridges and the actin filament.Option 4 : Binds ...

Which of the following is an occupational respiratory disorder? Option 1 : BotulismOption 2 : AnthracisOption 3 : EmphysemaOption 4 : Silicosis

Which of the following gastric cells indirectly help in erythropoiesis? Option 1 : Chief cellsOption 2 : Goblet cellsOption 3 : Parietal cellsOption 4 : Mucous cells

A woman has an X-linked condition on one of her X chromosomes. This chromosome can be inherited by Option 1 : Only grandchildrenOption 2 : Both sons and daughtersOption 3 : Only daughtersOption 4 : Only sons