Question
What are called pathogens? Give information about it? (with example).
✓
Answer
→Many organisms like bacteria, viruses, fungi, parasites, worms are responsible for causing diseases in humans. Such disease causing organisms are called pathogens.
→All parasites are pathogenic because they harm the host by staying in or on it. Pathogens enter our body in many ways, multiply, disturb our essential functions.
→As a result, external and functional impairment occurs.
→Pathogen has to adapt its life according to the internal environment of the host.
→Shows ability to survive in pH (<7) and resist various digestive enzymes.
Examples:
→All parasites are pathogenic because they harm the host by staying in or on it. Pathogens enter our body in many ways, multiply, disturb our essential functions.
→As a result, external and functional impairment occurs.
→Pathogen has to adapt its life according to the internal environment of the host.
→Shows ability to survive in pH (<7) and resist various digestive enzymes.
Examples:
| Disease | Pathogens | |
| 1 | Typhoid | Salmonella typhi |
| 2 | Pneumonia | Streptococcus pneumoniae, Haemophilus influenzae |
| 3 | Common cold | Rhino viruse |
| 4 | Malaria | Plasmodium species |
| 5 | Ascariasis | Ascaris lumbricoid |
| 6 | Elephantiasis/ Filariasis | Wuchereria bancrofti |
| 7 | Ringworm | microsporum, trichophyton & Epidermophyton |
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Explain enzyme-replacement therapy to treat adenosine deaminase deficiency. Mention two disadvantages of this procedure.
Mention the functions of LAB that are useful to man
Name the layer of cells forming the outerwall of blastocyet.
A group of youth were having a 'rave party' in an isolated area and was raided by police. Packets of ‘smack’ and syringes with needles were found littered around.
- Why is taking ‘smack’ considered an abuse?
- Write the chemical name of ‘smack’ and the name of its source plant.
- Syringes and needles used by the youth for taking the drug could prove to be very fatal. Why?
A team of students are preparing to participate in the interschool sports meet. During a practice session, you find some vials with labels of certain cannabinoids.
- Will you report to the authorities? Why?
- Name a plant from which such chemicals are obtained.
- Write the effect of these chemicals on human body.
In relation to energy transfer in ecosystem, explain the statement "10kg of deer's meat is equivalent to 1kg of lion's flesh".
What is Bt? How does it create resistance to the insect?
What is mutation? Explain with the help of an example, how a point mutation does affect the genetic code. Name another type of mutation.
With a labeled diagram describe structure of the stamen
- In a human genome, which one of the chromosomes has the most genes and which one has the fewest?
- Scientists have identified about 1.4 million single nucleotide polymorphs in human genome. How is the information of their existence going to help the scientists?