Download App

Model Paper 4 — BIOLOGY STD 12 Science — Question

Rajasthan BoardEnglish MediumSTD 12 ScienceBIOLOGYModel Paper 44 Marks
Question
What is DNA finger printing. Who discovered it. Write the DNA finger printing process. Writes its uitility.
✓

Answer

self

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "4 Marks Questions" from Model Paper 4→Model Paper 4 — all question types→BIOLOGY STD 12 Science question papers→Rajasthan Board STD 12 Science question papers→Rajasthan Board question paper generator→

Similar questions

Anukool is a big businessman in Delhi, but belongs to a small village. He went to his village during Christmas holiday. He was very disturbed to see women still using cowdung's cakes to prepare food there. He decided to set up a biogas plant so that people can use gas obtained from it for cooking. The villagers were very thankful to Anukool for his valuable help.
  1. What is biogas?
  2. What are the uses of biogas?
  3. Name some microorganisms involved in biogas production.
  4. What are the values shown by Anukool?
→
What is spermatogenesis? Briefly describe the process of spermatogenesis.
→
Can you list 10 recombinant proteins which are used in medical practice? Find out where they are used as therapeutics (use the internet).
→
Explain how does lac operon in E. coli operate
a. in the absence of an inducer.
b. in the presence of an inducer.
→
Write about the role of microbes in nitrogen fixation.
→
  1. Name the two growth models that represent population growth and draw the respective growth curves they represent.
  2. State the basis for the difference in the shape of these curves.
  3. Which one of the curves represents the human population growth at present? Do you think such a curve is sustainable ? Give reason in support of your answer.
→
Ranjana and Shilpi had a hot argument whether or not life is still originating on the earth today. Their neighbour, Mr. Kamal Mishra, a retired professor, who happened to be listening to the girls, called them and explained the matter in detail.
  1. As a student of biology, what is your answer to the above problem? And why?
  2. Recall the experiment of Miller, which simulated the primitive atmosphere.
  1. What were the products obtained in his experiment?
  2. How was energy provided in the experiment?
  1. What would have been the energy source for origin of life on the earth?
  2. Indicate the values shown by Mr. Kamal Mishra?
→
Match the items in Column I with those in Column II
S.No.
Column I
S.No.
Column II
(A)
Standing crop
(i)
The amount of mineral nutrients in the soil at a given time
(B)
Standing state
(ii)
Sedementary cycle
(C)
Climax community
(iii)
Herbivores and carnivores
(D)
Primary producers
(iv)
In near equilibrium with the environment
(E)
Phosporus cycle
(v)
Mass of living matter in a trophic level at a given time
(F)
Secondary producers
(vi)
Phytoplanktons
→
What is auto-defense? Describe autoimmune diseases in humans.
→
Describe the species according to their susceptibility to extinction and the IUCN Red List.
→