Class XII · Biology practice
Biotechnology and its Applications MCQs
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494 questions in this collection · Page 12 of 50
Question 111 of 494
📘 CLASS XII
Biotechnology And Its Applications
The process where isolated naked protoplasts from two different varieties of plants are fused to generate a new plant is called somatic ________.
Somatic hybridisation is the process of fusing isolated protoplasts from two different plant varieties.
Question 112 of 494
📘 CLASS XII
Biotechnology And Its Applications
The hybrid plant formed by fusing protoplasts of tomato and potato is known as ________.
The fusion of tomato and potato protoplasts resulted in the hybrid plant known as pomato.
Question 113 of 494
📘 CLASS XII
Biotechnology And Its Applications
Organisms whose genes have been altered by manipulation are called ________ Modified Organisms (GMO).
Organisms whose genes have been altered by manipulation are called Genetically Modified Organisms (GMO).
Question 114 of 494
📘 CLASS XII
Biotechnology And Its Applications
Genetic modification has made crops more tolerant to abiotic stresses such as cold, drought, salt, and ________.
GM crops are more tolerant to abiotic stresses including cold, drought, salt, and heat.
Question 115 of 494
📘 CLASS XII
Biotechnology And Its Applications
The enhanced nutritional value of golden rice comes from its enrichment with ________.
Golden rice is Vitamin ‘A’ enriched rice.
Question 116 of 494
📘 CLASS XII
Biotechnology And Its Applications
Bt toxin is produced by the bacterium called ________.
Bt toxin is produced by a bacterium called Bacillus thuringiensis (Bt for short).
Question 117 of 494
📘 CLASS XII
Biotechnology And Its Applications
The Bt toxin protein exists as inactive ________ in the bacteria.
The Bt toxin protein exists as inactive protoxins in the bacteria.
Question 118 of 494
📘 CLASS XII
Biotechnology And Its Applications
The Bt toxin becomes activated in the insect gut due to the ________ pH which solubilizes the crystals.
The alkaline pH of the insect gut solubilizes the crystals and converts the protoxin into the active toxin.
Question 119 of 494
📘 CLASS XII
Biotechnology And Its Applications
The activated Bt toxin binds to the surface of ________ epithelial cells in the insect gut.
The activated toxin binds to the surface of midgut epithelial cells.
Question 120 of 494
📘 CLASS XII
Biotechnology And Its Applications
The Bt toxin protein is coded by a gene named ________.
The toxin is coded by a gene named cry.
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