Q. No.In malaria infection the rupture of RBCs is associated with release of a toxic substance called
1 Hypnotoxin
2 Haemozoin
3 Ascaron
4 Haemotoxin
Which of the following statements is incorrect with respect to malaria?
| 1. | Malaria is a disease caused by a protozoan |
| 2. | Malignant malaria is caused by Plasmodium falciparum |
| 3. | Parasites enter the mosquito's body and multiply to form sporozoites that are stored in stomach of mosquito |
| 4. | Malaria parasites initially multiply within the liver cells in humans |
Release of which of the following is responsible for recurrent malarial symptoms?
1 Sporozoites
2 Haemozoin
3 Gametes in blood
4 Hemoglobin
Gambusia is a ..... introduced to feed on .....
1. Mosquito, larvae
2. Fish, mosquito-larvae
3. Frog species, mosquito of stagnant water
4. Snail, Protozoan
The sporozoites that cause infection when a female Anopheles mosquito bites a human being are found in
1 Hepatocytes of human
2 RBCs of mosquito
3 RBCs of man
4 Salivary glands of infected mosquito
Sexual reproduction of parasite (plasmodium) occurs in
| 1. | Liver |
| 2. | RBC |
| 3. | Mosquito's gut |
| 4. | Blood plasma of human |
A person suffering from a disease caused by Plasmodium, experiences chill and fever at the time when?
| 1. | The sporozites released from RBCs are being rapidly killed and broken down inside spleen |
| 2. | The trophozites reach maximum growth and give out certain toxins |
| 3. | The parasite after its rapid multiplication inside RBCs ruptures them, releasing the stage to enter fresh RBCs |
| 4. | The microgametocytes and megagametocytes are being destroyed by the WBCs |
In which parts of the body of the host do the following events in the life cycle of Plasmodium take place? For this, match the items given in column l with column ll.
| Column l | Column lI | ||
| a. | Fertilization | (i) | Liver cells/RBC of hosts human beings |
| b. | Development of gametocytes | (ii) | Body cavity of mosquito |
| c. | Release of sporozoites | (iii) | Stomach of mosquito/vector |
| d. | Asexual reproduction | (iv) | RBC of human beings |
1. a(iv), b(iii), c(ii), d(i)
2. a(iv), b(iii), c(i), d(ii)
3. a(iii), b(iv), c(ii), d(i)
4. a(i), b(iii), c(iv), d(ii)
Select correct sequence about life cycle of Plasmodium:
| 1. | Sporozoites (human)RBCsLiver cellsGametocytes in bloodBlood meal (female mosquito)Multiply (female mosquito)Sporozoites (female mosquito) |
| 2. | Sporozoiters (human)Liver cellsRBCsGametocytes in bloodBlood meal (female mosquito)multiply (female mosquito)Sporozoites (female mosquito) |
| 3. | Gametocytes (female mosquito)Gametocytes (human)RBCsMultiplySporozoitesBlood meal (human)Sporozoites (female mosquito)Multiply (female mosquito)Gametocytes (female mosquito) |
| 4. | Sporozoites (human)Liver cellsGametocytes in bloodRBCsBlood meal(female mosquito)Multiply (female mosquito)Sporozoites (female mosquito) |
Which of the following is mismatched with respect to the following events which occur in the life cycle?
| 1 Erythrocytic schizogony | : The rupture of RBCs is associated with the release of a toxic substance hemozoin, which is responsible for the chill and high fever |
| 2 Gametocytes | : Sexual stages develop in intestine of mosquito |
| 3 Fertilization | : Takes place in intestine/stomach of mosquito |
| 4 Schizogony in liver cells | : The parasite reproduces asexually in liver cells bursting the cell and releasing merozoites into the blood |
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