TS EAMCET Biodiversity and Conservation — practice questions
78 free MCQs with worked solutions. Tap any question for the answer + explanation, or practice them all in the app.
Practice TS EAMCET Biodiversity and Conservation in the app →Which sociobiologist popularised the term biodiversity?Variation in reserpine potency of Rauwolfia across Himalayan ranges is which level of diversity?The Western Ghats having more amphibian species than the Eastern Ghats shows which diversity?India has deserts, mangroves, coral reefs and alpine meadows. This reflects high what?India has more than how many genetically different strains of rice?Slightly more than how many plant and animal species have been described so far?Robert May's conservative estimate of global species diversity is about how many species?Which animal group is the most species-rich on Earth?Plants including algae, fungi and bryophytes form no more than about what share of recorded species?Which group has more species than all fishes, amphibians, reptiles and mammals combined?India holds about what share of global species diversity with only 2.4 per cent of world land area?India is one of how many mega diversity countries of the world?Species diversity generally changes how as one moves from the equator toward the poles?Which place has the fewest bird species among those listed?Colombia, near the equator, has nearly how many bird species?Which forest has the greatest biodiversity on Earth?Which idea explains high species richness in the tropics through time?Constant, predictable tropical environments promote greater diversity by encouraging what?Which naturalist observed that species richness rises with area explored, but only up to a limit?The species-area relationship for a wide variety of taxa takes what shape on ordinary axes?In log S = log C + Z log A, what does Z stand for?For small regions of any taxon, the value of Z usually lies in which range?Across entire continents, how does the species-area slope compare with that for small regions?David Tilman's field plots showed that plots with more species had what?Who proposed the rivet popper hypothesis?In the rivet popper analogy, the rivets of the aeroplane represent what?What is the top cause of extinction in plants and animals?Tropical rain forests once covered over 14 per cent of land and now cover no more than what?Which rain forest is called the lungs of the planet?Introduction of Nile perch into Lake Victoria eliminated over 200 species of which fish?Which fish, illegally introduced for aquaculture, threatens indigenous catfishes in Indian rivers?When a host fish goes extinct and its parasites vanish too, what is this called?Which species was lost mainly through human over-exploitation?The dodo, a recently extinct bird, was native to which island nation?The thylacine, listed among recent extinctions, lived in which region?How many episodes of mass extinction has life on Earth seen before the present one?Present extinction rates are estimated to be how much faster than in pre-human times?Loss of biodiversity in a region leads to which outcome?Protecting a whole ecosystem, as in saving a forest to save the tiger, is which approach?How many biodiversity hotspots are there in the world?Which hotspot covers part of India's exceptionally biodiverse regions?Species confined to one region and found nowhere else are called what?Which technique preserves gametes of threatened species for long periods?The Earth Summit on biodiversity in 1992 was held in which city?Where was the 2002 World Summit on Sustainable Development held?More than what share of drugs sold worldwide come from plants?The Amazon forest produces about what share of Earth's atmospheric oxygen through photosynthesis?Pollination and oxygen release are ecosystem services under which argument for conservation?Exploring molecular, genetic and species-level diversity for economic products is called what?What is gross primary production?Net primary production equals gross primary production minus what?Herbivores are also called what in a trophic system?Carnivores that feed on herbivores occupy which trophic level?Organisms feeding at several trophic levels make real feeding relations form what?What would happen to dead organic matter if decomposition stopped?Which is one of the three categories of decomposition processes?Decomposition rates are highest under which conditions?How does a rise in temperature affect microbial decomposition?After a volcanic eruption leaves soil with no plants or organic matter, what follows?Which less severe disturbance leads to secondary succession and faster recovery?Most nitrogen enters ecosystems through which process?Which plant family commonly hosts nitrogen-fixing symbionts?Conversion of ammonium to nitrite and nitrate ions by soil bacteria is called what?Soil bacteria releasing ammonium ions from organic nitrogen compounds carry out what?Mycorrhizal fungi give plant roots which nutrients in return for carbohydrates?Which set lists the primary plant macronutrients?What is a population in ecology?The maximum population size an environment can sustain is called what?The maximum per capita growth rate of a population is known as what?Which factor lowers population size by individuals leaving the area?Exponential growth assumes which condition?Growth in which the per capita rate falls as the population nears carrying capacity is called what?Which population model did Malthus formulate for constant environments?Which trait describes an r-selected species?Humans are an example of which kind of selected species?Which survivorship curve typically characterises r-selected species?Which survivorship curve is typical of K-selected species such as most mammals?In which survivorship pattern is death equally probable at any age?