Biology MCQs

Notes:
Amoebic dysentery diseases are caused by the protozoan parasite Entamoeba histolytica.

Notes:
Heat and moisture conditions aggravate fungal diseases. Fungal diseases are also known as mycosis.

Notes:
Plasmodium vivax, falciparum, and malariae species of Plasmodium cause Malaria. Whereas Plasmodium piper species of Plasmodium don’t cause Malaria.

Notes:
Mendel used Pisum sativum (peas)for his experiments because they saw many distinctive features in it and it could be easily grown and self-pollinated.

Notes:
Cambrian is the earliest geological period. The Cambrian period was the first geological period of the Paleozoic Era and the Phanerozoic Eon.

Notes:
Crotalaria junecea and Alhagi camelorum plants are used as green manure in crop fields and sandy soils. The specific plant or crop varieties that are grown and turned into the soil, thereby improving its overall quality, is called green manure.

Notes:
Aerobic digestion of sewage is used to produce biofuels. The fuel obtained from biomass is called biofuel.

Notes:
Utricularia (also called bladderworts) is a genus of insectivorous plants. They occur in fresh water and wet soil as terrestrial or aquatic species. All Utri cularia are carnivorous and capture small organisms by means of bladder-like traps. Aquatic species feed on protozoa and rotifers swimming in water-saturated soil’ while terrestrial species feed on water fleas (Daphnia), nematodes and even fish fry, mosquito larvae and young tadpoles.

Notes:
Skeletal muscle is a form of striated muscle which is under the voluntary control of the somatic nervous system. Most skeletal muscles are attached to bones by bundles of collagen fibres known as tendons. It is one of three major muscle types, the others being cardiac muscle and smooth muscle.

Notes:
Feed cost is one of the important variable costs that plays a big role in determining the poultry cost. Variable costs rise and fall with the size of the output and the level of the operation. Fixed costs (for items such as taxes, insurance, interest, and depreciation on buildings and equipment), are incurred whether or not there is any output. Moreover the feed of broilers and layers varies with time of their growth.