Lakshya Education MCQs

Question: What are the options for increasing food production?
Options:
A.agro-chemical based agriculture
B.organic agriculture
C.genetically engineered crop-based agriculture
D.all of the above
Answer: Option D
: D

Few techniques and technologies were needed to improve the output of food crops to meet the ever growing demand of the human population. The three options that have been used for increasing food production are (i) agro-chemical based agriculture (ii) organic agriculture; and (iii) genetically engineered crop-based agriculture.

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More Questions on This Topic :

Question 1. Bioplastic can be made using a simple sugar from a fungus.
  1.    True
  2.    False
Answer: Option A
: A

A Japanese company called Hayashibara made bioplastic by using simple sugar derived from the fungus Pullularia pullulans. They constructed a polysaccharide called ‘pullulan’ which possessed the physical properties of plastic but was also biodegradable as it was made of only sugars.
Question 2. Bioplastic can be made using a simple sugar from a fungus.
  1.    True
  2.    False
Answer: Option A
: A

A Japanese company called Hayashibara made bioplastic by using simple sugar derived from the fungus Pullularia pullulans. They constructed a polysaccharide called ‘pullulan’ which possessed the physical properties of plastic but was also biodegradable as it was made of only sugars.
Question 3. Who is known as the ‘Indian Father of the Green Revolution’?

 
  1.    Dr. Norman Borlaug
  2.    Dr. MS Swaminathan
  3.    Dr. APJ Abdul Kalam
  4.    Dr. Hargobind Khurana
Answer: Option B
: B

Dr. MS Swaminathan is known as the ‘Indian Father of Green Revolution’ for his leadership and success in introducing and further developing high-yielding varieties of food grains in India. The extensive work done by him and his team in this field helped India become self-sufficient in the production of food grains, especially Wheat.
Question 4. AIDS can be detected by PCR at an early stage as
  1.    it carries out isolation fast
  2.    No other technique is available
  3.    PCR has to be done before hybridization can be done
  4.    It amplifies the genetic material
Answer: Option D
: D

AIDS can be detected by PCR (polymerase chain reaction) at early stages as it amplifies the genetic material millions of times. Thus the presence of even a tiny number of viruses can give a positive result to the diagnostic test.
Question 5. The trigger for activation of toxin of Bacillus thuringiensis is:
  1.    Acidic pH of stomach
  2.    High temperature
  3.    Alkaline pH of gut
  4.    Mechanical action in the insect gut
Answer: Option C
: C

Bt cotton is produced by introducing an endotoxin producing gene from B. thuringiensis. Once Bt cotton grows, it starts producing these toxins. This toxin enters the bollworm when they feed on cotton leaves. Upon reaching the alkaline environment of the insect’s midgut the toxin is activated and binds to specific receptors present on the lining cells. This causes autodigestion and creates holes in the midgut region leading to the death of the insect.
Question 6. Which among the four diseases are treated with biological products obtained from transgenic animals?

i. Emphysema   

ii. AIDS    

iii. Cystic fibrosis   

iv. Phenylketonuria
  1.    Only i, ii and iii
  2.    Only ii, iii and iv
  3.    Only i, iii and iv
  4.    Only i, ii and iv
Answer: Option C
: C

Useful biological products are obtained from transgenic animals to treat diseases like Emphysema, Cystic fibrosis and Phenylketonuria. The treatment of AIDS is the use of antivirals that are not obtained from transgenic animals.

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