Question
Particulate air pollutants.
✓
Answer
- Particulate air pollutants are either solids or liquids.
- Particles having larger diameter of 10 pm settle in the soil but finer particles with 1 pm or less remain suspended in the air.
- Central Pollution Control Board (CPCB) has declared that, particulate matter of size 2.5 pm or less in diameter (PM 2.5) are responsible for causing the greatest harm to humans.
- These fine particulates can be inhaled deep into the lungs and are responsible for irritation, inflammation and damage to lungs.
- In addition to this, it causes breathing and respiratory disorders and premature deaths.
- Examples of particulate pollutants are : Smoke, smog, pesticides, heavy metals, dust and radioactive elements.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
More "Answer the following questions in detail." from Biodiversity, Conservation and Environmental Issues→Biodiversity, Conservation and Environmental Issues — all question types→BIOLOGY STD 12 Science question papers→Maharashtra Board STD 12 Science question papers→Maharashtra Board question paper generator→
Similar questions
Explain the development of a secondary oocyte (ovum) in a human female from the embryonic stage upto its ovulation. Name the hormones involved in this process.OR
When does oogenesis start in humans? Name the three hormones and their sources, linked with oogenesis. How do they influence the process of oogenesis? Explain.
When does oogenesis start in humans? Name the three hormones and their sources, linked with oogenesis. How do they influence the process of oogenesis? Explain.
Explain the process of protein synthesis from processed mRNA.
List the three different allelic forms of gene “I” in humans. Explain the different phenotypic expressions, controlled by these three forms.
What is organic farming? Discuss the benefits of organic farming as a viable practise in the context of developing nations like India.
Answer the following questions:
Write the Mendelian $F_2$ phenotypic ratio in a dihybrid cross. State the law that he proposed on the basis of this ratio. How is this law different from the law of segregation?
→Write the Mendelian $F_2$ phenotypic ratio in a dihybrid cross. State the law that he proposed on the basis of this ratio. How is this law different from the law of segregation?
Long Answer Questions
What is parthenogenesis? Explain the haplodiploid method of sex determination in honey bee.
What is parthenogenesis? Explain the haplodiploid method of sex determination in honey bee.
Species richness goes on decreasing as we move from equator to pole. Explain.
Draw a diagrammatic sketch of the sectional view of a typical anatropous ovule.
OR
Draw a labelled diagram of the sectional view of a typical anatropous ovule.
OR
Draw a labelled diagram of the sectional view of a typical anatropous ovule.
Distinguish between: Old or classical biotechnology and Modem biotechnology.
Observe the representation of genes involved in the lac operon given below:
- Identify the region where the repressor protein will attach normally.
- Under certain conditions repressor is unable to attach at this site. Explain.
- If repressor fails to attach to the said site what products will be formed by z, y and a?
- Analyse why this kind of regulation is called negative regulation.