Class 5 EVS chapter 8 question answer

Welcome to Class 5 EVS chapter 8 question answer. On this page find important extra questions for this NCERT book for Class 5 EVS Chapter 8 A Treat for Mosquitoes class 5 evs worksheet with answers.

Class 5th EVS chapter 8 question answer (NCERT Book)

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A Treat for Mosquitoes class 5 EVS chapter 8 question answer

Match the following

COLUMN 1	COLUMN 2
1. Aedes	a. Mosquitoes’ eggs
2. Anopheles	b. Dengue
3. Larvae	c. Malaria
4. Unclean tanks	d. Green substance
5. Algae	e. Reproduces mosquitoes

Answers

1. b)
2. c)
3. a)
4. e)
5. d)

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Choose the right option:

1. Rajat had to take a bitter medicine and undergo a ____________ (blood test/blood pressure) to determine the cause of his illness.
2. Rajat discovered that he had __________(malaria/dengue) through the blood test.
3. Aarti had to get a blood test done and it showed that she had __________(anaemia/iron).
4. The doctor explained that anaemia is characterized by a low level of the __________(blood/bone).
5. Aarti was advised by the doctor to consume foods rich in iron, such as ________(jaggery,sugar), amla, and green leafy vegetables, to increase her haemoglobin.

Answers

1. Blood test
2. Malaria
3. Anaemia
4. Blood
5. Jaggery

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Unscramble the words

1) OQITOUUSM
2) EDELEN
3) LRIAAAM
4) BDOOL
5) NAAIMEA

Answers

1) MOSQUITO
2) NEEDLE
3) MALARIA
4) BLOOD
5) ANAEMIA

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Multiple Choice Questions

Question 1. What did the blood test reveal about Rajat?
a) He had dengue
b) He had malaria
c) He had anaemia
d) He had a fever

Question 2. What is the main cause of malaria?
a) Mosquito bites
b) Flies spreading the disease
c) Dirty water
d) Contaminated food

Question 3. How did Rajat feel when the needle pricked his finger during the blood test?
a) Like an ant bite
b) Extremely painful
c) No sensation at all
d) Like a bee sting

Question 4. What is the main cause of anaemia according to Aarti’s blood test?
a) Lack of iron in the blood
b) Excessive mosquito bites
c) Consuming contaminated food
d) Lack of sleep

Question 5. How did Aarti increase her haemoglobin levels?
a) Taking bitter medicine
b) Eating jaggery and green leafy vegetables
c) Avoiding mosquito bites
d) Drinking plenty of water

Answer

1. a)
2. a)
3. a)
4. a)
5. b)

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Answer the following questions

Question 1. How did Rajat find out that he had malaria?

Answer

Rajat found out that he had malaria through a blood test. The test revealed the presence of malarial parasites in his blood.

Question 2. What is the significance of a blood test in diagnosing diseases like malaria and anaemia?

Answer

A blood test helps in identifying specific diseases by analyzing the components and characteristics of the blood. In the case of malaria, the presence of malarial parasites can be detected, while for anaemia, the levels of haemoglobin or iron in the blood are measured.

Question 3. What is the difference between normal mosquitoes and disease-carrying mosquitoes?

Answer

Disease-carrying mosquitoes, specifically female Anopheles mosquitoes, are responsible for transmitting diseases like malaria. Not all mosquitoes spread diseases; only those carrying the specific pathogens can transmit them to humans.

Question 4. How did Aarti’s blood test help in diagnosing her condition?

Answer

Aarti’s blood test revealed that she had anaemia, a condition characterized by low levels of haemoglobin or iron in the blood. This helped the doctor identify the cause of her weakness and prescribe appropriate treatment.

Question 5. What are some other diseases that can be caused by mosquito bites?

Answer

Apart from malaria, mosquito bites can also transmit diseases such as dengue fever, chikungunya, Zika virus, yellow fever, and West Nile virus.

Question 6. In which season is malaria more common? Why?

Answer

Malaria is more common during the rainy season because stagnant water, which serves as breeding grounds for mosquitoes, tends to accumulate. Mosquitoes thrive in such conditions, leading to increased transmission of the malaria parasite.

Question 7. What preventive measures can be taken to protect oneself from mosquito bites?

Answer

Some preventive measures against mosquito bites include using mosquito nets while sleeping, applying insect repellents, wearing long-sleeved clothing, eliminating stagnant water sources, and using screens on windows and doors to prevent mosquitoes from entering the house.

Question 8. How do flies spread diseases without biting?

Answer

Flies can spread diseases through indirect contact. They land on contaminated surfaces, such as garbage or feces, and then come into contact with food or other objects. When humans consume or come into contact with these contaminated items, they can contract diseases.

Question 9. How can algae growth in stagnant water be harmful?

Answer

Algae growth in stagnant water can make the surface slippery and create a breeding ground for mosquitoes. It can also disrupt the natural balance of the ecosystem by depleting oxygen levels in the water and negatively impacting aquatic life.

Question 10. What role did Ronald Ross play in the discovery of how mosquitoes spread malaria?

Answer

Ronald Ross, a scientist and doctor, played a crucial role in discovering that mosquitoes are responsible for spreading malaria. Through extensive research and observation, he identified the presence of malarial parasites in the stomach of female mosquitoes, providing evidence of their role in transmitting the disease. His discovery earned him the Nobel Prize in Medicine in 1902.