This set of Pollution Control Multiple Choice Questions & Answers (MCQs) focuses on “Effects of Air Pollutants on Animals”.
1. How do animals get affected by air pollutants?
a) From the soil
b) From ingestion
c) From inhalation
d) From contaminated plants
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Explanation: The primary reason for the effect of air pollutants on animals is indirectly from the contamination of plants. Animals eat contaminated plants and get poisoned upon the accumulation of these pollutants.
2. Which of the following pollutants is not one of the most harmful to animals?
a) Fluorine
b) Arsenic
c) Zinc
d) Lead
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Explanation: Arsenic, lead, and fluorine contribute to much of the health effects on animals. These pollutants either get deposited in the atmosphere from industrial sources or from pesticides and fertilisers.
3. Which of the following is not a symptom of acute fluorine poisoning?
a) Lack of appetite
b) Bone damage
c) Diarrhoea
d) Weak muscles
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Explanation: Loss of appetite, diarrhoea and muscle weakness are signs of short-term fluorine poisoning in animals. There are other acute symptoms of exposure, like laziness and weight loss in animals.
4. What is a sign of chronic fluorine poisoning in animals?
a) Rotting teeth
b) Diarrhoea
c) Weight loss
d) Laziness
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Explanation: Long-term fluorine poisoning affects the teeth of the animals; cattle and sheep are especially affected by exposure to fluorine. The other listed symptoms are acute effects of exposure to fluorine.
5. Why is it difficult to ascertain the source of fluorine poisoning?
a) Because of various sources
b) Because of rarity
c) Because animals die before detection
d) Because symptoms are difficult to detect
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Explanation: There are various sources of fluorine poisoning. Animals could be getting poisoned from water sources, or contaminated flora. It is difficult to attribute these symptoms of exposure to one specific source.
6. Which of the following is not an effect of acute arsenic poisoning?
a) Vomiting
b) Weight loss
c) Breathing problems
d) Salivation
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Explanation: Weight loss is not a symptom of short-term arsenic poisoning. Conversely, vomiting, breathing problems and extreme salivation are all symptoms. Even death may occur between a few hours or days depending upon the concentration of exposure.
7. Which of the following is a long-term arsenic poisoning?
a) Digestive system damage
b) Brain damage
c) Nervous system damage
d) Pancreas damage
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Explanation: Arsenic poisoning can cause nervous system damage in the long run. Other long-term systems of arsenic poisoning include cough and anaemia. Digestive system damage is unrelated to this ailment.
8. Arsenic is so poisonous that even a small dosage of 0.5 g per day can cause poisoning in cattle.
a) True
b) False
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Explanation: Arsenic is very poisonous and can poison cattle and sheep at very low concentrations of exposure. These concentrations vary for different species. For example, it is as low as 0.5 g/day for sheep, and for cattle, it is less than 2 g/day.
9. Which of the following is a symptom of short-term lead poisoning?
a) Weight loss
b) Collapse
c) Nerve damage
d) Liver damage
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Explanation: The incidence of symptoms of lead poisoning is unexpected and sudden. The animals may collapse and have convulsions. Diarrhoea is also a symptom. The manifestation of symptoms also depends on the animal itself.
10. What is a primary symptom of chronic lead poisoning?
a) Breathing difficulty
b) Collapse
c) Diarrhoea
d) Liver damage
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Explanation: Long-term symptoms of lead poisoning in animals include difficulty in breathing, which may occur due to paralysis of the throat muscles. Convulsions may also result because of breathing problems.
11. Low intake of which of the following nutrients can cause more retention of lead?
a) Arsenic
b) Sodium
c) Calcium
d) Potassium
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Explanation: Low calcium intake can result in more retention of lead in the animal body. As much as 5 times of lead gets accumulated in animals on low-calcium diets, versus animals with adequate calcium diets.
12. Low doses of lead over long periods can prove to be lethal.
a) True
b) False
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Explanation: Lead gets accumulated in the body, so low exposure concentrations can accumulate over long periods. This can have a cumulative effect, resulting in the death of animals after months of exposure to small dosage.
13. What is the long-term effect of exposure to radiation in animals?
a) Breathlessness
b) Burns
c) Cancer
d) Vomiting
View Answer
Explanation: Chronic effects of exposure to radiation in animals are similar to the effects on humans. Cancer and short lifespan are both symptoms of such exposure, in addition to the mutation of cells in the body.
Sanfoundry Global Education & Learning Series – Pollution Control.
To practice all areas of Pollution Control, here is complete set of 1000+ Multiple Choice Questions and Answers.
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