Science Practice Quiz 223

Q1.In the context of the lake cleaned by Binod, which of the following are mentioned as local weeds that serve as food for fish?

A. Vallineria and hydrilla B. Lotus and water lily C. Eichhornia and pistia D. Azolla and salvinia

Q2.The 'Susu' dolphin, also known as the blind dolphin, is found in the fresh waters of which Indian rivers?

A. River Ganga and River Brahmaputra B. River Godavari and River Krishna C. River Narmada and River Tapi D. River Mahanadi and River Kaveri

Q3.What is identified as the primary threat to the 'Susu' (blind dolphin) species in the rivers Ganga and Brahmaputra?

A. Untreated industrial and urban wastes with high chemicals B. Overfishing of their food sources C. Habitat loss due to dam construction D. Climate change leading to water scarcity

Q4.Which of the following animals is specifically mentioned as being found in the Brahmaputra plain?

A. One-horned rhinoceros B. Bengal tiger C. Elephant D. Deer

Q5.Which two animals are specifically mentioned as being found in the delta area?

A. Bengal tiger and crocodiles B. Elephants and deer C. One-horned rhinoceros and monkeys D. Pine and fir

Q6.Which are the most popular varieties of fish found in the fresh river waters, lakes, and the Bay of Bengal Sea?

A. Rohu, catla and hilsa B. Pomfret, mackerel and sardine C. Tuna, salmon and cod D. Bhetki, singhi and magur

Q7.What is the primary objective of the 'Namami Ganga Programme'?

A. To conserve the River Ganga B. To promote tourism along the Ganga C. To develop waterways in the Ganga basin D. To control floods in the Ganga plain

Q8.Deodars and firs are examples of which type of trees?

A. Coniferous trees B. Deciduous trees C. shrubs D. tropical trees

Q9.In which geographical area is the Bengal tiger typically found?

A. mountains B. delta area C. Amazon D. plains

Q10.According to the experiment described, what is the primary consequence if land is completely cleared of vegetation?

A. The soil cover will quickly disappear. B. The water absorption capacity of the soil will increase. C. The number of coins or caps required for the experiment will decrease. D. The rate of water sprinkling will become irrelevant.

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Science Practice Quiz 223