Which of the following phenomena occurs when chlorinated insecticides enter a food chain? (a) Biomagnification (b) Global warming (c) Eutrophication (d) Deafness

Write one symptom of each of two diseases which might be caused if suspended particulate matter enters into the respiratory tract through inspiration. Construct the sequence of events when agricultural runoff is drained into water bodies. [2+3=5] OR Poaching is one of the main reasons behind the depletion of biodiversity-Prepare a list of any three such endangered wild animals resulting from it. Show the various methods of conservation of biodiversity with the help of a chart. [3+2=5]

Excessive amount of ____ is secreted from the walls of bronchi and bronchioles of trachea during Asthma.

Asthma is caused when the ____ of animals enter the respiratory system of human through breathing.

What might be the environmental causes behind asthma?

Among the following four terms, one includes the other three. Find it out and write it: Coughing up thick phlegm, Bronchitis, Higher probability of smokers being affected, inflammation of the bronchi of Respiratory System of Man.

If the detergent rich in ____ used for washing human clothes gets mixed in a pool, it results in eutrophication.

Prepare a list of diseases linked with pollution as observed by a doctor among her or his patients in a whole day. Which in-situ measures are associated with the conservation of tiger and one-horned rhinoceros in the same national park? [3 + 2]

Compare between eutrophication and biomagnification on the basis of the following two points: Cause, Effect

One of the environmental problems of Sunderbans is imbalance in prey - predator number — Justify the validity of the statement with three examples. What are the roles of biosphere reserve and sanctuary in the conservation of biodiversity ? [3+2=5] OR What are the causes for the endangeredness of the following wild animals ? [3+2=5] Royal Bengal Tiger One-horned Rhinoceros Lion What are the two effects of air pollution on human health ?

What environmental problems can originate if the concentration of different greenhouse gases polluting air increases in a steady manner?

Match the words in Column A with the most appropriate words in Column B and rewrite the correct pair mentioning the serial no. of both columns (any five): [1×5=5] Column A Column B 2.13 Adrenaline (a) Air Pollutant 2.14 Self pollination (b)According to Haldane the hot marine water containing different organic compounds 2.15 The position of flower is axial (c)The adoloscent phase of human development 2.16 Hot Dilute Soup (d)No need of agent 2.17 SPM (e)The senescence phase of human development. 2.18 Britleness of bone and pain at bone joints (f) Increases heart beat, cardiac output and blood pressure. (g) Dominant trait