Classify the organisms below based on segmentation:
a) Ascaris b) Taenia
c) Fasciola d) Wuchereria
e) Nereis f) Pheretima

Classify the following pollutants : (a) Carbon monoxide (CO) (b) Detergents ( c ) Plastic (d) DDT (e) Sewage (f) Cigarette smoke

Certain properties of liquids are given below: Classify them on the basis of effect of temperature on them. a) Evaporation b) Vapour pressure c) Surface tension d) Viscosity

Classify the diseases given below into two groups based on the causative organism of each group (Typhoid, Malaria, Diphtheria, Amoebia).

Classify each of the following as pure substance or mixture. (a) Ethyl alcohol (b) Oxygen (c) Blood (d) Carbon (e) Steel (f) Distilled water

Classify the following species into Lewis acids and Lewis bases and show how these act as Lewis acid/ base: (a) 'OH'- (b) F'- (c) 'H^+(d) BCl_3' ?

Mention a single word for the following. a) Sexes are not separate. b) Body wall with three layers. c) File like rasping organs in Mollusca. d) Segmentation of animal body. e) The property of a living organism to emit light. f) Alternation of generation in Cnidarians.

Which one belongs to phylum Annelida? a. Octopus b. Crab c. physalia d. Nereis