Reading Comprehension (Unseen) Passage Set - 17

Reading Comprehension (Unseen) Passage for class 6,7,8,9,10,11 and 12 | WBBSE, WBCHSE, ICSE and CBSE

Reading Comprehension (Unseen) Passage Set - 17

Read the following passage and answer the questions that follow :-

Kolkata : The New Town Kolkata Development Authority (NKDA) has decided to spray Bacillus Thuringiensis Israelensis (BTI), a kind of bacteria that destroys mosquito larvae, to prevent outbreak in the township. NKDA officials said that BTI will be sprayed using a hand compression machine having a tank capacity of 10 litre or more. An agency is being selected for the work. It was four years back when the idea to use BTI as a mosquito killing agent was proposed by Gautam Chandra, a Zoology professor of Burdwan University. A report submitted by Chandra and his team had mentioned, "Spraying mosquito larvaecidalagents like BTI, a kind of naturally occuring bacteria that infects and kill mosquito larvae, is an effective solution. These bacteria are highly selective, killing only mosquitoes, fungus gnats and blackflies. Formulations of BTI will only kill there types of insects and won't harm other insects, fish, birds, worms or any mammals." Other than using BTI, The NKDA authorities will also spray temephos and citronella chemicals.

A)State whether the following statements are True/False. Write 'T' for True and 'F' for False.

i. The full form of BTI is Bacillus Thuringiensis Isra elensis . 

ii. The idea to use BTI as a mosquito killing agent was proposed ten years back . 

iii. BTI is a naturally occuring bacteria . Formulations of BTI will kill all types of insects . 

B)Answer each of the following questions in about 30 words.

i. How will BTI be sprayed? 

ii. Why are bacteria like BTI considered highly selective? 

iii. What will NKDA authourities spray other than BTI?