✓ Board-verified
Biology · 2023 · 3 marks
Biotechnology and its ApplicationsBiotechnological Applications in Agriculture3 marksRemembershort answer
CBSE 2023 · Region 3 · Set 1 · Q27
(a) Write the scientific name of the nematode that infests the tobacco plants and the part that it infests. (b) How is Agrobacterium used to protect…
(a)
Write the scientific name of the nematode that infests the tobacco plants and the part that it infests.
(b)
How is Agrobacterium used to protect tobacco plant from this attack ?
Marking-scheme solution
(a)
Meloidegyne incognitia
Roots
(b)
By using Agrobacterium vector, Nematode specific genes were introduced into host plant, introduction of DNA produced both sense and anti-sense RNA in the host cells this two RNAs being complementary to each other form a double stranded RNA (ds RNA), that initiated RNAi and thus silenced the specific mRNA of the nematode hence parasite could not survive in transgenic host.
All Biotechnology and its Applications questions2023 question paperNCERT solutions: Biotechnology and its ApplicationsPractice Biotechnology and its Applications →
More from Biotechnology and its Applications
- RNA interference (RNAi) helps in making tobacco-plant resistant to a nematode (Meloidegyne incognitia) Choose the correct option that shows how RNAi…2025
- The most widely used transgenic animal for testing the safety of vaccine before they are used in humans is:2025
- There are two different farm lands, one where Bt-cotton crop was cultivated and the other where non Bt-cotton crop (indigenous) was cultivated.…2022
- (i) What are transgenic animals? (ii) Name the first transgenic cow and state its importance. OR (i) Explain the convention for naming EcoRI. (ii)…2024
- With the help of a storyboard or a flowchart only, explain all the stages of how human insulin is produced through r-DNA technology.2022
- An application of biotechnology in agriculture involves production of pest resistant plants using 'cry' genes from a bacterium, Bacillus…2022
- An application of biotechnology in agriculture involves the production of pest resistant plants, using "cry" gene from a bacterium, Bacillus…2025
- Name the source organism (scientific name) that produces statins. Mention its use in medical field and how does it act.2022
CBSE Class 12 Biology past-paper question from the 2023 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.