Download App

Human Health and Disease — BIOLOGY STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceBIOLOGYHuman Health and Disease3 Marks
Question
A person shows strong unusual hypersensitive reactions when exposed to certain substances present in the air. Identify the condition. Name the cells responsible for such reactions. What precaution should be taken to avoid such reactions.
✓

Answer

Allergy. Mast Cells are responsible for such reactions. To avoid such reactions following precautions must be taken:
  • The use of drugs like antihistamine, adrenalin and steroids quickly reduce the symptoms of allergy.
  • Avoid contact with substances to which a person is hypersensitive.

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 "3 Marks Question" from Human Health and Disease→Human Health and Disease — all question types→BIOLOGY STD 12 Science question papers→Gujarat Board STD 12 Science question papers→Gujarat Board question paper generator→

Similar questions

What is acrosome?
→
Explain the ecological efficiency.
→
Make a list of any three outbreeding devices that flowering plants have developed and explain how they help to encourage cross-pollination.
→
(i) EcoRI has played a very important role in recombinant DNA technology.
(a) Explain the naming convention of Eco RI.
(b) Write the name of the recognition site and cleavage site of this restriction enzyme.
(ii) What is the longitudinal extension of DNA produced by these restriction enzymes called? Describe their role in the formation of r-DNA.
→
Name the three layers of uterine wall.
→
Expand IUD.
→
Name any two copper releasing IUDs.
→
Differentiate between Parthenocarpy and Parthenogenesis. Give one example of each.
→
  1. Can a plant flowering in Mumbai be pollinated by pollen grains of the same species growing in New Delhi? Provide explanation to your answer.
  2. Draw the diagram of a pistil where pollination has successfully occurred. Label the parts involved in reaching the male gametes to its desired destination.
→
Explain with suitable examples the homology and analogy found in the plant or its parts.
→