Question 1 : The eggshell of birds becomes thin by the pollution from pesticides due to the interference in the activity of
Question 2 : dB is the abbreviation used for the quantitative expression of
Question 3 : Plant species with a wide range of genetic distribution evolve into a local population known as
Question 4 : Which of the following lake zones has phytoplanktons in abundance?
Question 5 : The population of birds declined in an area where DDT was extensively used. Why?
Question 6 : The pyramid of energy is always upright states that
Question 7 : Identify the mismatched pair
Question 8 : The upper part of an aquatic ecosystem contains
Question 9 : All species of Lemur are endemic to which area?
Question 10 : Which one is a K selected species?
Question 11 : Select a non-denitrifying bacteria
Question 12 : In thermal stratification, the middle region which shows vertical temperature change is called
Question 13 : In an ecosystem, the energy flow is always
Question 14 : The ability of a population to increase under ideal environmental conditions is called
Question 15 : The ratio between energy flow at different points in a food chain is known as
Question 16 : Allelopathy refers to
Question 17 : Lincoln index measures
Question 18 : Which is not the characteristic of a population?
Question 19 : Which is not the characteristic of ‘r’ selected species?
Question 20 : The bottom area where production is less than respiration in a pond ecosystem is termed as
Question 21 : Which of the following requires maximum energy?
Question 22 : The process of vernalization is practised in
Question 23 : Which statement is correct with respect to the food chain?
Question 24 : An orchid living on a tree exhibit
Question 25 : Plants growing under shade are known as
Question 26 : Plants growing under direct sunlight are known as
Question 27 : According to Shelford’s Law of Tolerance, the organisms wide environmental factor tolerance limit show
Question 28 : Which is the renewable exhaustible natural energy resource?