O b) Are not physically fit to play games like football c) Suffer from altitude sickness with symptoms like nausea, fatigue, etc., d) Have the usual RBC count but then haemoglobin has very high binding affinity to O . A biologist studies the population of eats in a barn. He found that the average natality was , average mortality is , immigration is and emigration to be . The net increase in population is [AIPMT ] a) b) c) d) Zero .
An association of individuals of different species living in the same habitat and having functional interaction is: [RE-AIMPT ] a) Biotic community b) Ecosystem c) Population d) Ecological niche . Gause’s principle of competitive exclusion states that: [NEET – I, ] a) More abundant species will exclude the less abundant species through competition b) Competition for the same resources excludes species having different food preferences c) No two species can occupy the same niche indefinitely for the same limiting resources d) Larger organisms exclude smaller ones through competition . When does the growth rate of a population following the logistic model equal zero? The logistic model is given as dN/dt=rN( -N/K): [NEET – I, ] a) When N/K is exactly one b) When N nears the carrying capacity of the habitat c) When N/K equals zero d) When dearth rate is greater than birth rate Chapter - Biodiversity and conservation .
Select the correct statement about biodiversity [AIPMT MAINS ] a) Large scale planting of Bt cotton has no adverse effect on biodiversity. b) Western Ghats have a very high degree of species richness and endemism c) Conservation of biodiversity is just a fad pursued by the developed countries d) The desert areas of Rajasthan and Gujarat have a very high level of desert animal species as well as numerous rare animals . Sacred groves are specially useful in[AIPMT MAINS ] a) Preventing soil erosion b) Year-round flow of water in rivers c) Conserving rare and threatened species d) Generating environmental awareness . The highest number of species in the world