Practice MCQ Questions and answers on Biology-GK

A species inhabiting different geographical areas is known as allopatric species. This geographical isolation prevents mating between the two organism of same species.

A lichen is a composite organism that emerges from algae or cyanobacteria living among the filaments (hyphae) of the fungi in a mutually beneficial symbiotic relationship. The fungi benefit from the carbohydrates produced by the algae or cyanobacteria via photosynthesis.

Nitrogen fixation is carried out naturally in soil by microorganisms termed diazotrophs that include bacteria such as Azotobacter and archaea. Some nitrogen-fixing bacteria have symbiotic relationships with plant groups, especially legumes.

Organisms that depend only on raw plant products are said to be herbivorous.

The scientific study of how organisms interact with their environment is called Ecology.

Savanna is grassland with scattered individual trees.

Birbal Sahni (14 November 1891 – 10 April 1949) was an Indian paleobotanist who studied the fossils of the Indian subcontinent. He also took an interest in geology and archaeology. He founded what is now the Birbal Sahni Institute of Palaeobotany at Lucknow in 1946.

A halophyte is a salt-tolerant plant that grows in soil or waters of high salinity, coming into contact with saline water through its roots or by salt spray, such as in saline semi-deserts, mangrove swamps, marshes and sloughs and seashores.

The pyramid of energy can never be inverted. The pyramid represents the amount of energy at each trophic level of the food chain.