Based on the common features like presence of notochord and dorsal hollow neural system, animals like fishes, amphibians, reptiles, birds along with mammals are included in which Phylum?

• Mammalia

• Chordata

• Primata

• Insecta

Sexual reproduction in Algae that takes place through fusion of two dissimilar size gametes is called?

• Zoospores

• Anisogamous

• Isogamous

• Ooagamous

The members of Rhodophyceae are commonly called ............ algae.

• green

• brown

• red

• yellow

A few organisms can tolerate and thrive in a narrow range of temperatures. Such organisms are called __________

• Osmotic

• Eurythermal

• Stenothermal

• Hydrothermal

The members of phaeophyceae are commonly called ............... algae.

• green

• brown

• red

• yellow

Biological names are generally derived from which language?

• French

• Latin

• Mexican

• German

Aurelia (Medusa) and Adamsia (Polyp) are examples of which Phylum?

• Ctenophora

• Annelida

• Coelenterata

• Aschelminthes

Asterias (Star fish), Echinus (Sea urchin), Antedon (Sea Lily) are all examples of which Phylum?

• Echinodermata

• Annelida

• Platyhelminthes

• Arthropoda

A few organisms can tolerate and thrive in a wide range of temperatures. Such organisms are called .................

• Osmotic

• Eurythermal

• Stenothermal

• Hydrothermal

The animals in which the body cavity is absent are known as .............

• coelomates

• wild

• pseudocoelomates

• acoelomates