Home
Class 12
BIOLOGY
Assertion : In malaria, a person experie...

Assertion : In malaria, a person experiences chills and high fever recurring every three to four days.
Reason : This is caused by the release of haemozoin with rupture of liver cells.

A

If both assertion and reason are true and reason is the correct explanation of assertion.

B

If both assertion and reason are true but reason is not the correct explanation of assertion.

C

If assertion is true but reason is false.

D

If both assertion and reason are false.

Text Solution

Verified by Experts

The correct Answer is:
C
Malignant malaria caused by Plasmodium falciparum is the most serious one and can even be fatal. The parasites initially multiply within the liver cells and then attack the red blood cells (RBCs) resulting in their rupture. The rupture of RBCsis associated with responsiblek for the chill and high fever recurring every three to four days.
Promotional Banner

Similar Questions

Explore conceptually related problems

A toxic substance, reponsible for the chills and high fever recurring every three to four days in malarial fever, is

Answer the following Explain the cause of periodic recurrence of chill and high fever during malaria attack in human.

A person suffering from a disease caused by Plasmodium experiences recurring chill and fever at the time when "_______" is released

In malaria, the product released by plasmodium into blood that cause chill and fever is called

A person suffering from a disease caused by Plasmodium, experiences recurring chill and fever at the time when (a) the sporozoites released from RBCs are being rapidly killed and broken down inside spleen (b) the trophozoites reach maximum growth and give out certain toxins (c) the parasite after its rapid multiplication inside RBCs ruptures them, releasing the stage to enter fresh RBCs (d) the microgametocytes and megagametocyte are being destroyed by the WBCs

Assertion : A plant cell bursts if placed in water. Reason : High turgor pressure causes bursting of plant cells.

Assertion : A typical microsporangium of angiosperms is generally surrounded by four wall layers - epidermis, endothecium, middle layers and tepetum. Reason : The outer three wall layers perform the function of protection and help in dehiscence of anther to release the pollen.

Study carefully the following stages of life cycle of malarial parasite i.e., Plasmodium. Arrange these stages in the correct sequence and select the correct answer. 1. Sporozoites leave the blood stream and enter the liver cells of man. 2. Sporozoites present in the salivary glands of female Anopheles mosquito are injected into the blood stream of man. 3. The parasite reproduces asexually in RBCs, resulting in bursting of RBCs and causing the cycles of fever, relased parasites infect new RBCs. 4. The parasite reproduces asexually in liver cells, ultimately causing the rupturing of cells. 5. Two types of gametocytes i.e., microgametocytes and macrogametocytes develop in the RBCs. 6. Female Anopheleles mosquito takes up the gametocytes with blood meal of an infected person. 7. Mature infective stage of the parasite i.e., sporozoites escape from intestine and migrate to the mosquito's salivary glands. 8. Fertilisation and developmental stages of the parasite take place in mosquito's stomach.

Assertion : Streptococcus pneumoniae and Haemophilus influenzae are responsible for causing infectious disease in human beings. Reason : A healthy person acquires the infection by inhaling the droplets/aerosols released by an infected person.