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Doctors Medicines MCQs Q&A

Lichens are indicators of pollution because ________

Lichens are indicators of pollution because ________ Correct Answer They don’t grow in polluted regions

The co-existence of algae with fungus is called lichens. Lichens are the best examples of symbiotic association. They are also good indicators of pollution as they don’t grow in polluted regions.

Related Questions

With reference to lichens, consider the following statements: 1. Lichens are symbiotic associations between algae and bacteria. 2. Algal component is known as mycobiont. 3. Lichens are very good pollution indicators - they do not grow in polluted areas. Which of the statements given above is/are correct?
With reference to lichens, consider the following statements: 1. Lichens are symbiotic associations between algae and bacteria. 2. Algal component is known as mycobiont. 3. Lichens are very good pollution indicators – they do not grow in polluted areas. Which of the statements given above is/are correct?
 In the following question, sentences of a paragraph have been jumbled and labelled as A, B, C and D. You are required to rearrange the jumbled sentences of the paragraph and mark your response accordingly by selecting the correct option. A: Sources of water pollution are either point sources or non-point sources.  B: Point sources have one identifiable cause of the pollution, such as a storm drain or a wastewater treatment plant.  C: Marine pollution and nutrient pollution are subsets of water pollution. D: Water pollution can be classified as surface water or groundwater pollution.
Which of the following conclusions are most obvious in relation to the statement given below: Statement: Vehicular source contributes 60% to the total pollution level of Delhi, as informed in the Rajya Sabha today. Conclusion: I.  The court has ordered that the main source of pollution should be identified. II.  The problem of pollution is high on the worklist III. In the other cities also, vehicular source contributes around the same percentage level of pollution. IV. This matter was first raised in the Lok Sabha. V.  Not many towns in India face the problem of pollution.
Below are given statements followed by some conclusions. You have to take the given statements to be true even if they seem to be at variance with the commonly known facts- Statements: 1) Because of motor vehicles like cars, pollution has increased manifold. 2) Respiratory diseases are increasing due to pollution. Conclusions: I. If cars were not there pollution would be nil. II. Doctors earn a lot due to pollution. Decide which of the given conclusions logically follow(s) from the given statements.
In this question, a passage and a statement related to it have been given. Read carefully the verse and review the statement based on it. Delhi, which is one of India's capital an d one of the largest cities in the world, is undergoing severe crisis, due to its high level of urbanization, increasing population and high levels of pollution. Studies have proven that Are the biggest factors of pollution used for industrial and domestic use? And due to their use, people here emit large quantities of nitrogen oxides (NOx), ozone (O3), black carbon (BC) and microorganisms (PM). According to the 2015 Global Burden of Disease report, there were 1.09 million deaths due to PM 2.5 in India. Air pollution was included as one of the 10 biggest threats to health. According to the World Health Organization, 37 cities of India are among 100 worst polluted cities in the world, where PM10 was found to be the highest ever. For the production of ozone, together with sunlight and heat, nitrogen oxides (NOx) and organic compounds (VOCs) are needed simultaneously. Therefore, in the summer months, ozone is produced in large quantities in the cities. Statement: Air pollution is one of the top 10 factors affecting health in India. Select the most suitable from the following options A-statement is absolutely true B-statement is probably true C-statement can not be reviewed D-statement is completely false
Read the paragraph and answer the question that follows: Incessant combustion of fossil fuels emits toxic gases, polluting the air; urbanization results in deforestation and hence poor air quality; littering of plastic waste damages the productivity of soil and pollutes water bodies. Environmental pollution results in more serious consequences like – global warming, unexpected climatic changes, depletion of natural resources, species depletion, and various other adverse effects leading to a lowered sustainability of life on earth. Another prime contributor to the pollution of the environment is plastic pollution. Plastic bags those are not disposed of properly, reach the soil and water bodies, polluting them and damaging dependent lives. Being non-bio degradable plastic lingers around for years, rendering them useless. What is the prime contributor to pollution?
Below are given statements followed by some conclusions. You have to take the given statements to be true even if they seem to be at variance with the commonly known facts. Statements :
1) Beacuse of motor vehicles like cars, pollution has increased manifold.
2) Resiratory diseases are increasing due to pollution. Conclusions :
1) If cars were not there pollution would be nil.
2) Doctors earn a lot due tgo pollution. Decide which of the given conclusions logically follows from the given statements.
Which of the following is NOT correct about olfactory indicators? Statement 1: When an acid or base is added to it, then its 'characteristic smell' can not be detected. Statement 2: Onion and Vanilla are olfactory indicators.
Which of the following option is true for the given statements about dial indicators? Statement 1: Dial indicators can inspect dimensional variation. Statement 2: It is not suitable to use to check out of roundness.