Approximately _____ species of bacteria are known to cause diseases in humans. Options: A. 100B. 200C. 300D. 400 View Answer B. 200
In living organisms the lubricant which provides protection against damage resulting from friction is___________? Options: A. CarbohydratesB. Fatty acidC. WaterD. Protein View Answer C. Water
Most of the cellular secretions are ________ in nature? Options: A. GlycolipidsB. GlycoproteinsC. NucleohistonesD. Proteins View Answer B. Glycoproteins
Those organisms which can prepare their own food from simple inorganic material and can store energy are called___________? Options: A. AutotrophsB. HeterotrophsC. ProcariotiqueD. Eu-cariotique View Answer A. Autotrophs
Competition between species will be greatest if they attempt to occupy the same___________? Options: A. EcosystemB. CommunityC. HabitatD. Niche View Answer D. Niche
Which of the following statement about AIDS is incorrect: Options: A. is a host specific diseaseB. An infected mother cannot pass the virus to her baby.C. Results in enlargement of lymph nodesD. Can be prevented. View Answer B. An infected mother cannot pass the virus to her baby.
Pepsinogen is produced from__________? Options: A. Mucous cellsB. Parietal cellsC. Zymogen cellsD. All of these View Answer C. Zymogen cells
Puccinia commonly destroys______________? Options: A. CornB. TomatoC. DodderD. Wheat View Answer D. Wheat
Midgut in cockroach is a short narrow tube called____________? Options: A. Hepatic caecaB. GizzardC. StomachD. Rectum View Answer C. Stomach
How many species of ascomycota occur in lichen symbiotic association? Options: A. 30%B. 40%C. 50%D. 60% View Answer C. 50%