Daily Practice Problems Human Health and Disease

Question 1:

Choose the correct options:

1. Widal Test is used to confirm which of the following diseases?

(a) Pneumonia

(b) Typhoid

(d) Malaria

2. Which among the following species of Plasmodium causes malignant malaria?

(a) P. vivax

(b) P. ovale

(d) P. falciparum

3. Which of the following barriers of innate immunity is represented by interferons?

(a) Cytokine barriers

(b) Physical barriers

(d) Cellular barriers

4. MALT stands for:

(a) Membrane-associated lymphoid tissue

(b) Mucus-associated lymphoid tissue.

(c) Mucosa-associated lymphoid tissue.

(d) Marrow-associated lymphoid tissue.

Question 2:

Name the following:

1. The yellowish fluid secreted by mothers during the initial days of lactation.

2. The type of immunity developed when preformed antibodies or antitoxins are injected into the body of an individual to protect the body against foreign agents.

3. The specialised cells responsible for production of chemicals that induce allergic response.

4. The potent agents which are capable of transforming normal cells into cancerous cells.

5. A diagnostic test to detect for the presence of AIDS causing viruses.

Question 3:

Fill in the blanks with appropriate words:

1. The malarial parasite Plasmodium requires two hosts - __________ and __________ to complete its life cycle.

2. Fungi belonging to genera __________, __________ and __________ are responsible for causing ringworms.

3. Antibody __________ are produced in response to allergens.

4. __________ is a secondary lymphoid organ which is a large reservoir of erythrocytes.

5. An unpleasant __________ syndrome is experienced by an individual if regular dose of drugs/alcohol is abruptly discontinued.

Question 4:

Name the causative agent that are responsible for causing the following diseases:

1. Typhoid

2. Filariasis

3. Amoebic dysentery

4. Ascariasis

5. AIDS

Question 5:

State the scientific name of any one plant that are the source of the following drugs:
1. Opioids

2. Cannabinoids

3. Cocaine

4. Morphine

5. Nicotine

Question 6:

Define the following terms:

1. Health

2. Immunity

3. Active immunity

4. Allergy

5. Benign tumour

Question 7:

State whether the following statements are true or false.

1. Entamoeba histolytica is a bacterium that causes amoebiasis.

2. The life cycle of Plasmodium is digenetic.

3. Immunisation programmes have enabled us to completely eradicate a deadly disease like smallpox.

4. HIV is a retrovirus.

5. Tobacco chewing is related with high risk of skin cancer.

Question 8:

Match the columns A and B.

Column A	Column B
1. Lymphocytes	a. Auto-immune disease
2. Rheumatoid arthritis	b. Cancer treatment
3. Histamine	c. Bacterial infection
4. α-Interferon	d. Antibodies
5. Pneumonia	e. Allergy

Question 9:

State any four factors that affect our health. Also state any four ways in which staying healthy benefits an individual.

Question 10:

Name the infective stage of the malarial parasite which is injected into the human host by the female Anopheles mosquitoes. Also, explain why symptoms of malaria are characterised by chills and high fever.

Question 11:

Mention any six measures which must be adopted to stop the spread of infectious diseases.

Question 12:

Name the disease and its causative agent which is characterised by the inflammation of lymphatic vessels of the lower limbs. How is the disease transmitted?

Question 13:

What is meant by innate immunity? How is it accomplished in an individual?

Question 14:

Draw a neat and labelled diagram of the structure of a typical antibody.

Question 15:

What are lymphoid organs? Explain with examples, how are primary lymphoid organs different from the secondary lymphoid organs?

Question 16:

With the help of a diagrammatic representation, explain the lifecycle of a retrovirus.

Question 17:

What is cancer? What are the various causes of cancer? Mention some ways in which cancer can be treated.

Question 18:

What is meant by ‘Metastasis’? How are benign tumours different from malignant tumours?

Question 19:

What are cannabinoids? How are they obtained? How do they affect the body functioning of an individual?

Question 20:

List some measures which can be adopted to prevent and control alcohol and drug abuse among adolescents.

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Problem-solving on Class 12 Biology Human Health and Disease NCERT Chapter 7 after learning a theoretical concept is crucial for several reasons:

Application of Knowledge: Problem-solving allows you to apply the theoretical concepts of the topic Class 12 Biology Human Health and Disease you have learned to real-life situations. It helps you bridge the gap between abstract knowledge and practical scenarios, making the learning more relevant and meaningful.
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Critical Thinking: Problem-solving encourages critical thinking and analytical skills. It requires you to analyze the problem, identify relevant information, and devise a logical solution. This process sharpens your mind and improves your ability to approach complex challenges effectively.
Retention and Recall: Actively engaging in problem-solving reinforces your memory and improves long-term retention. Applying the concepts learned in Human Health and Disease Class 12 Biology in practical scenarios helps you remember them better than passive reading or memorization.
Identifying Knowledge Gaps: When you attempt to solve problems, you may encounter areas where your understanding is lacking. These knowledge gaps become evident during problem-solving, and you can then focus on filling those gaps through further study and practice. You can refer Human Health and Disease Class 12 Biology Notes on LearnoHub.com
Boosting Confidence: Successfully solving problems after learning a theoretical concept boosts your confidence in your abilities to handle Human Health and Disease. This confidence motivates you to tackle more challenging tasks and improves your overall performance in the subject.
Preparation for Exams and Challenges: Many exams, especially in science, mathematics, and engineering, involve problem-solving tasks. Regular practice in problem-solving prepares you to face these exams with confidence and perform well. It is also advised to take tests on Human Health and Disease Class 12 Biology Online Tests at LearnoHub.com.
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Life Skills Development: Problem-solving is a valuable life skill that extends beyond academics. It equips you with the ability to tackle various challenges you may encounter in personal and professional life.
Improving Decision Making: Problem-solving involves making decisions based on available information and logical reasoning. Practicing problem-solving enhances your decision-making skills, making you more effective in making informed choices.

In summary, problem-solving after learning a theoretical concept on CBSE Human Health and Disease Class 12 Biology is an essential part of the learning process. It enhances your understanding, critical thinking abilities, and retention of knowledge. Moreover, it equips you with valuable skills that are applicable in academic, personal, and professional contexts.

You must have heard of the phrase “Practice makes a man perfect”. Well, not just a man, practice indeed enhances perfection of every individual.

Practicing questions plays a pivotal role in achieving excellence in exams. Just as the adage goes, "Practice makes perfect," dedicating time to solve a diverse range of exam-related questions yields manifold benefits. Firstly, practicing questions allows students to familiarize themselves with the exam format and types of problems they might encounter. This familiarity instills confidence, reducing anxiety and improving performance on the actual exam day. Secondly, continuous practice sharpens problem-solving skills and enhances critical thinking, enabling students to approach complex problems with clarity and efficiency. Thirdly, it aids in identifying weak areas, allowing students to focus their efforts on improving specific topics. Moreover, practice aids in memory retention, as active engagement with the material reinforces learning. Regular practice also hones time management skills, ensuring that students can allocate appropriate time to each question during the exam. Overall, practicing questions not only boosts exam performance but also instills a deeper understanding of the subject matter, fostering a holistic and effective learning experience.

All About Daily Practice Problems on Class 12 Biology Human Health and Disease NCERT Chapter 7

Our Daily Practice Problems (DPPs) offer a diverse range of question types, including Multiple Choice Questions (MCQs) as well as short and long answer types. These questions are categorized into Easy, Moderate, and Difficult levels, allowing students to gradually progress and challenge themselves accordingly. Additionally, comprehensive solutions are provided for each question, available for download in PDF format - Download pdf solutions as well as Download pdf Questions. This approach fosters a holistic learning experience, catering to different learning styles, promoting self-assessment, and improving problem-solving skills. With our well-structured DPPs, students can excel in exams while gaining a deeper understanding of the subject matter. Hope you found the content on Class 12 Biology Human Health and Disease NCERT Chapter 7 useful.

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