Question
Pollen grains are both useful and harmful. Justify the statement.

Answer

Pollen grains of many species cause severe allergies and bronchial afflictions in some people often leading to chronic respiratory disorders—asthma, bronchitis etc. Parthenium or carrot grass that came into India as a contaminant with improved wheat has become worldwide in occurrence and causes pollen allergy.
Pollen grains are rich in nutrients. It has become a fashion is recent years to use pollen tablets as food supplements. In western countries, a large number of pollen products in the form of tablets and syrups are available in the market. Pollen cosumption has been claimed to increase the performance of athletes and race horses. 

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

Similar questions

Who propounded the Central Dogma principle and what is meant by it?
Differentiate between intraspecific and inter specific competition.
Amongst pea tendrils, Opuntia spines, lemon thorns, and Cucurbita tendrils, which are homologous structures? Why do you call them homologous?
What do you think is the significance of reproductive health in a society?
"Post-industrialization, the population of melanised moth increased in England at the expense of white-winged moths." Provide explanations.
Study the table showing the population interaction between species Z and Y respectively. Assign the appropriate +/– signs for A,B,D,E and respective interactions for C and F.
Image
Explain how oxygen and the chemical composition of detritus control decomposition.
Human blood group is a good example of multiple allelism and co-dominance. Justify.
Seeing a crowd of students in one corner of the school, the principal rushed to see the matter and found some children beating and chasing a small lizard. On seeing the principal, all the children fled to their classes except Alok who requested the principal to arrange for some medical assistance for the injured animal. The principal rewarded Alok for his attitude to save guard our biodiversity.
  1. Mention the factors resulting in loss of biodiversity
  2. Was Alok an indisciplined boy, who did not run to the class on seeing the principal? What values does the act promote?
In our society the women are often blamed for giving birth to daughters. Can you explain why this is not correct?