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Why are some species of plants insectivorous?

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Important Questions on Biology

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IAS (PRE) General Studies Paper 1>Chapter 13 - Biology>Exercise 1>Q 169
King Cobra is the only snake that makes its own nest. Why does it make its nest?
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IAS (PRE) General Studies Paper 1>Chapter 13 - Biology>Exercise 1>Q 170
Regular intake of fresh fruits and vegetables is recommended in the diet since they are a good source of antioxidants. How do antioxidants help a person to maintain health and promote longevity?
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IAS (PRE) General Studies Paper 1>Chapter 13 - Biology>Exercise 1>Q 171
A married couple adopted a male child. A few years later, twin boys were born to them. The blood group of the couple is AB positive and O negative. The blood group of the three sons is A positive, B positive and O positive. The blood group of the adopted son is:
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IAS (PRE) General Studies Paper 1>Chapter 13 - Biology>Exercise 1>Q 172
Microbial fuel cells are considered a source of sustainable energy. Why?
1. They use living organisms as catalysts to generate electricity from certain substrates.
2. They use a variety of inorganic materials as substrates.
3. They can be installed in waste water treatment plants to cleanse water and produce electricity.
Which of the statements given above is/are correct?
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IAS (PRE) General Studies Paper 1>Chapter 13 - Biology>Exercise 1>Q 173
At present, scientists can determine the arrangement or relative positions of genes or DNA sequences on a chromosome. How does this knowledge benefit us?
1. It is possible to know the pedigree of livestock.
2. It is possible to understand the causes of all human diseases.
3. It is possible to develop disease resistant animal breeds.
Which of the statements given above is/are correct?
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IAS (PRE) General Studies Paper 1>Chapter 13 - Biology>Exercise 1>Q 174
A genetically engineered form of brinjal, known as the Bt brinjal has been developed. The objective of this is:
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IAS (PRE) General Studies Paper 1>Chapter 13 - Biology>Exercise 1>Q 175
When the bark of a tree is removed in a circular fashion all around near its base, it gradually dries up and dies because:
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IAS (PRE) General Studies Paper 1>Chapter 13 - Biology>Exercise 1>Q 176
What are the reasons for the people’s resistance to the introduction of bt brinjal in India?
1. Bt brinjal has been created by inserting a gene from a soil fungus into its genome. 
2. The seeds of brinjal are terminator seeds and therefore, the farmers have to buy the seeds before every season from the seed companies.
3. There is an apprehension that the consumption of Bt brinjal may have adverse impact on health. 
4. There is some concern that the introduction of Bt brinjal may have adverse effect on the biodiversity. 
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