Science Group
Explore subjects and practice MCQs
10
Chapters
1,000
Total MCQs
Unit-2 Biodiversity
Answer: Botanical gardens grow and preserve plants away from their natural habitat, i.e., ex situ conservation.
Answer: A zoo keeps animals away from their natural habitat, so it is ex situ conservation.
Answer: CITES is a convention that regulates international trade in endangered species.
Answer: Loss of biodiversity reduces the stability and productivity of ecosystems.
Answer: A region must have at least 1,500 endemic vascular plant species to qualify as a biodiversity hotspot.
Answer: National parks conserve species in their natural habitat, so they are in situ, not ex situ.
Answer: Biosphere reserves and wildlife sanctuaries protect species in their natural habitat (in situ).
Answer: Seed banks preserve the seeds of plant species for future use.
Answer: Captive breeding helps increase the population of endangered species under human care.
Answer: Lion and tiger are different species of the same genus Panthera.
Answer: Plants are multicellular autotrophs with cellulose cell walls.
Answer: Eubacteria have cell walls made of peptidoglycan.
Answer: Viruses are obligate intracellular parasites that reproduce only inside host cells.
Answer: Viroids are naked RNA molecules without a protein coat.
Answer: BSE (mad cow disease) is caused by prions, which are infectious proteins.
Answer: Animals are multicellular heterotrophs without cell walls.
Answer: Algae, including seaweeds, are placed in kingdom Protista in the six-kingdom system.
Answer: Genetic diversity is one of the levels of biodiversity, along with species and ecosystem diversity.
Answer: Overexploitation of natural resources is a serious threat to biodiversity.
Answer: Complete destruction of habitat leaves a species unable to survive, leading to extinction.