a.What is classification of living things?
b. State four ways each by which the following groups of organisms are of economic importance in their habitats:
i) fungi ii) plants.
c. complete the table below by stating five major phyla of the kingdom Animalia and give one example of each
| Phyla of kingdom Animalia | Example |
Explanation
a.Classification of living things is the grouping/arrangement of organisms; with similar characteristics based on structural/genetic/cellular/evolutionary trends; for easy identification.
bi. -cause various plant/animal diseases;
-act as decomposers;
-recycle nutrients;
-bring about fermentation in breweries;
-used in baking industries;
-serve as source of food;
-are used in pharmaceutical industries/production of antibiotics/vitamins;
-destroy various substances/cloth/paper/wood/food
bii. -are involved in nutrient recycling;
-purify the environment/reduce greenhouse effects;
-provide shade/shelter;
-provide food;
-provide oxygen;
-prevent erosion;
-are sources of timber for building/construction;
-provide materials for pharmaceuticals/production of drugs.
c.
| phyla of Kingdom Animalia | Examples |
| Porifera | Sponges,venus flower basket |
| Cnidaria/coelenterata | Hydra,obelia,sea anemone,jelly fish,aurelia,coral |
| Platyhelminthes | Liverfluke,tapeworm,schistosoma,planaria |
| Nematoda | Whipworm,ascaris,guinea worm,hookworm,wucheria |
| Annelida | Marine worm, leech,earthworm,lugworm,seaworm,bobbit worm, fireworm. |
| Mollusca | Snail, bivalve,slug,octopus,clam,oyster,squid |
| Arthropoda | Scorpion,spider,butterfly,housefly,cockroach,crab,crayfish,grasshopper,centipede,millipede,ant. |
| Echinodermata | Starfish,sea lily, sea urchin,sea cucumber,brittle star,sea star. |
| Chordata | Fish,frog,bird,man,cat,tiger,lion,dog,salamander,alligator,snake,giraffe |