CBSE Class 5 EVS Chapter 8: A Treat for Mosquitoes NCERT Solutions
This chapter, 'A Treat for Mosquitoes,' for CBSE Class 5 EVS, delves into the world of mosquitoes and the diseases they spread. Students will explore common mosquito-borne illnesses like malaria and dengue, understand their symptoms, and learn about diagnostic methods such as blood tests. The solutions provide insights into why malaria is more prevalent during certain seasons and offer practical advice on preventing mosquito bites at home. By engaging with these solutions, students will develop a better understanding of public health, personal hygiene, and the importance of community efforts in controlling mosquito populations. These NCERT Solutions are designed to aid students in their exam preparation by clarifying concepts and providing clear, step-by-step explanations for all questions related to mosquito-borne diseases and their prevention.
Quick info
| Board | CBSE |
|---|---|
| Class | Class 5 |
| Subject | EVS |
| Session | 2026 |
| Language | English |
| Type | NCERT Solutions |
| Chapter | Chapter 8 |
Chapter summary
Chapter 8, 'A Treat for Mosquitoes,' focuses on understanding mosquito-borne diseases. The NCERT Solutions cover identifying symptoms of malaria, recognizing diagnostic tests like blood reports, and listing other diseases transmitted by mosquitoes. It also explores the seasonal prevalence of malaria and personal protective measures against mosquito bites. The solutions aim to educate students on the health risks associated with mosquitoes and empower them with knowledge for prevention.
Learning outcomes
- Understand how diseases like malaria are diagnosed.
- Identify common symptoms of mosquito-borne illnesses.
- List diseases other than malaria that are spread by mosquitoes.
- Explain why malaria is more common in certain seasons.
- Describe personal and household methods to prevent mosquito bites.
Topics covered
Paper topics
- Mosquito-borne diseases
- Malaria
- Dengue
- Chikungunya
- Symptoms of malaria
- Diagnosis of malaria
- Blood tests for malaria
- Seasonal prevalence of malaria
- Mosquito bite prevention
- Household protection from mosquitoes
Important topics
- Understanding malaria diagnosis through blood tests
- Identifying symptoms of mosquito-borne illnesses
- Preventive measures against mosquito bites
- Seasonal factors affecting malaria transmission
PDF preview
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Questions and Solutions
Question 1
- How did they find out that they had malaria?
- What problems did they have on having malaria?
- What other diseases can be caused by mosquito bites?
- In which season is malaria more common? Why do you think this happens?
- What do you do in your house to protect yourself from mosquitoes? Also find out from your friends about what they do?
Yes, I know people who have had malaria. Here's how they found out and what they experienced:
- Diagnosis of Malaria: People usually find out they have malaria through a blood test. The doctor might also suspect malaria based on symptoms like high fever that comes with chills and shivering (rigors), body aches, and extreme tiredness. The blood test report confirms the presence of malaria parasites in the blood.
- Problems faced with Malaria: When someone has malaria, they often experience severe symptoms. These can include high fever, intense body pain, headaches, vomiting, and a feeling of extreme weakness. The fever can come in cycles, with periods of chills and shivering followed by sweating.
- Other Diseases from Mosquito Bites: Besides malaria, mosquito bites can transmit other serious diseases like Dengue, Chikungunya, and Yellow Fever. These diseases also cause fever and body pain, and some can be very dangerous.
- Season for Malaria: Malaria is generally more common during and after the rainy season. This is because mosquitoes, which carry the malaria parasite, breed and multiply rapidly in stagnant water that collects during the monsoons. The warm and humid conditions are ideal for mosquito breeding.
- Protecting from Mosquitoes: To protect ourselves from mosquitoes at home, we can take several steps. These include:
- Sleeping under mosquito nets, especially at night.
- Using mosquito repellents or coils.
- Ensuring that there is no stagnant water around the house, as mosquitoes lay eggs in it. We should cover water tanks, empty small containers that collect water, and keep surroundings clean.
- Wearing full-sleeved clothes, particularly during dawn and dusk when mosquitoes are most active.
Question 2
The blood test report is for a patient named Rajat, aged 11. The report states:
Malarial Parasite Found in Blood Sample
(खन में मलेरिया के जीवाण पाए गए)
The words in the report that clearly indicate the person has malaria are "Malarial Parasite Found in Blood Sample" and its Hindi translation "मलेरिया के जीवाण पाए गए". This phrase directly confirms the presence of the parasite that causes malaria in the patient's blood sample.
Common mistakes
- Confusing symptoms of different mosquito-borne diseases.
- Not understanding the role of blood tests in diagnosing malaria.
- Forgetting to mention seasonal factors influencing malaria spread.
- Incomplete lists of preventive measures against mosquitoes.
Revision tips
- Review the symptoms of malaria and other mosquito-borne diseases.
- Understand the significance of the blood test report in diagnosing malaria.
- Note down the reasons for seasonal increase in malaria cases.
- List all the preventive measures discussed for avoiding mosquito bites.
Practice MCQs
Q1. What is a key indicator of malaria found in a blood test report?
Explanation: The blood test report explicitly mentions 'Malarial Parasite Found in Blood Sample', which is the direct confirmation of malaria.
Q2. Which of the following is NOT typically caused by mosquito bites?
Explanation: Chickenpox is a viral infection spread through direct contact, not by mosquito bites. Dengue, Malaria, and Chikungunya are all mosquito-borne diseases.
Q3. Why might malaria be more common in certain seasons?
Explanation: Mosquitoes, the carriers of malaria, thrive and reproduce more effectively in warm and humid weather, leading to a higher incidence of malaria during these times.
Q4. What is a common symptom of malaria mentioned in the chapter?
Explanation: The clinical report and solution descriptions highlight 'Fever with Chills and Rigors' as a primary symptom experienced by individuals with malaria.
Frequently asked questions
What is Chapter 8 of Class 5 EVS about?
Chapter 8, 'A Treat for Mosquitoes,' focuses on understanding mosquito-borne diseases, their symptoms, diagnosis, and prevention methods.
How can one find out if they have malaria?
Malaria is typically diagnosed through a blood test that checks for the presence of malarial parasites. Symptoms like fever with chills and rigors are also indicative.
What are some diseases caused by mosquito bites?
Besides malaria, mosquito bites can cause diseases such as dengue, yellow fever, and chikungunya.
When is malaria more common and why?
Malaria is often more common in rainy seasons because mosquitoes, which spread the disease, breed more actively in warm and wet conditions.
What are some ways to protect yourself from mosquitoes?
You can protect yourself by using mosquito nets, repellents, wearing full-sleeved clothes, and ensuring there is no stagnant water around your house where mosquitoes can breed.
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