The disease malaria is caused by the protozoan plasmodium. Malaria is transmitted by the saliva of the female anopheles’ mosquito. When the female mosquito bites the infected person, it then carries it to the healthy person. Symptoms include alternate high and low body temperature, headaches.
Sporogony of malarial parasites occurs in the stomach wall of mosquitoes.
Sporogony is the sexual stage that produces an enormous number of infecting parasites. The nucleus of the oocyst divides and this is followed by cytoplasmic division. Next is the formation of several sporozoite and this stage is a highly infective stage. This is because, when a mosquito bites a man, thousands of sporozoites enter the bloodstream. Plasmodium finishes its life cycle in two hosts.
Also Read: Parasitic Symbiosis
List I | List II | ||
A. | Common cold | I. | Plasmodium |
B. | Haemozoin | II. | Typhoid |
C. | Widal test | III. | Rhinoviruses |
D. | Allergy | IV. | Dust mites |
Disease | Pathogen | Main organ affected | |
1. | Dysentery | Protozoa | Liver |
2. | Ringworm | Fungus | Skin |
3. | Typhoid | Bacteria | Lungs |
4. | Filariasis | Common round worm | Small intestine |
Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R
Assertion (A) : 02 is liberated in the non-cyclic photophosphorylation.
Reason (R) : Liberation of oxygen is due to photolysis of water.
In the light of the above statements, choose the correct answer from the options given below
Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R
Assertion (A) : The Cro-Magnon man was the direct ancestor of the living modern man.
Reason (R) : Cro-Magnon man had slightly prognathous face.
In the light of the above statements, choose the correct answer from the options given below
Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R
Assertion (A) : In eukaryotes, transcription occurs in nucleus.
Reason (R) : In bacteria, transcription and translation occurs in cytoplasm.
In the light of the above statements, choose the correct answer from the options given below
Any adverse variation from an organism's normal structural or functional condition is usually associated with specific signs and symptoms and distinct from physical injury.
A few diseases appear out of nowhere and persist only a few days. Acute diseases, such as the common cold, are examples of them. Acute diseases frequently become chronic if they are not treated.
Acute diseases include strep throat, fractured bones, appendicitis, influenza, pneumonia, and others.
Acute diseases develop quickly and are accompanied by unique symptoms that necessitate immediate or short-term treatment and improve once treated. Acute illnesses, such as the common cold, can sometimes go away on their own.
Chronic diseases are illnesses that develop over time and endure for a long time or even a lifetime. Chronic disease is defined as a disease that lasts more than three years. The symptoms are relatively modest at first.