
Dysentery is a bacterial disease.

Important Questions on Health and Hygiene
Match the following related to parasites?
Parasite | Disease Caused | ||
(i) | Trypanosoma gambiense | (a) | Delli boils /oriental sores / Tashkent ulcers |
(ii) | Wuchereria bancrofti | (b) | Malaria |
(iii) | Leishmania donovani | (c) | African sleeping sickness |
(iv) | Plasmodium sps | (d) | Elephantiasis |
(v) | Leishmania tropica | (e) | Kala-azar / Dum dum fever / Visceral Leishmaniasis |

Assertion : Entamoeba histolytica is a monogenetic parasite.
Reason : It is infected by contaminated food.

Assertion (A): Plasmodium causes hypertrophy of RBCs in man.
Reason (R): The number of RBCs in man increases due to Plasmodium.

Draw a well labelled diagram to show the Life cycle of Plasmodium.

Identify the sequence of stages in the Golgi cycle of Plasmodium vivax.
a) Schizont
b) Amoeboid
c) Trophozoite
d) Signet-ring

Match the following related to the effects of parasites on the host.
Parasite | Effect on host | Host effected | |||
Sacculina | Hypertrophy | Sheep | |||
Larva of Fasciola | Hyperplasia | Snail | |||
Plasmodium | Parasitic castration | Carcinus | |||
Fasciola hepatica | Gigantism | Man |

a) Sporocyst
b) Ookinete
c) Sporozoite
d) Zygote
e) Oocyst


Identify correct combinations.
Primary Host | Secondary Host | Parasite | |
A | Man | Culex | Wucheraria |
B | Man | Anopheles | Plasmodium |
C | Man | Musca | Entamoeba |
D | Man | Absent | Ascaris |


How is the following disease transmitted?
Malaria

1) The trophozoites multiply by binary fission and produce cysts and both stages are passed in the faeces.
2) Trophozoites migrate to the large intestine.
3) Excystation occurs in the small intestine and trophozoites are released.
4) Infection by Entamoeba histolytica occurs by ingestion of mature cysts in fecally contaminated food, water, or hands.


In the given diagram of the trophozoite stage of Entamoeba. Identify parts labelled as and select the option.




Assertion Sometimes relapse of malaria may take place even after treatment.
Reason Activation of hypnozoites.

Arrange them in correct sequence.
Amoeboid stage
Trophozoite
Schizont
Signet ring stage
Erythrocytic merozoites


