Host-parasite Relations - Parasitology and Immunology - Life Sciences Previous Year Questions

1

2007 · Life Sciences · Parasitology and Immunology · Host-parasite Relations

Life Sciences (XL) 2007

Differential blood cell counting is carried out routinely not only for assessing the ‘general health’ of an individual but also for identifying types of infection. Increase in the circulatory eosinophils is likely to be due to infection with

A

Viruses

B

Helminths

C

Fungus

D

Bacteria

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2

2009 · Life Sciences · Parasitology and Immunology · Host-parasite Relations

Life Sciences (XL) 2009

Match the parasitic species with their correct hosts.

A

Check answer

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3

2010 · Life Sciences · Parasitology and Immunology · Host-parasite Relations

Life Sciences (XL) 2010

In case of parasites that require multiple hosts to complete their life cycle, what does definitive host mean?

A

It is the host that harbors the sexual stages of the parasite.

B

It is the host in which the parasite reproduces asexually.

C

It is the host in which the parasite feeds.

D

It is the host in which the parasite remains in a dormant stage.

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4

2011 · Life Sciences · Parasitology and Immunology · Host-parasite Relations

Life Sciences (XL) 2011

Which of the following is a main symptom of infection by Wuchereria bancrofti?

A

Swelling of limbs

B

Skin rashes

C

Blindness

D

Brain cyst

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5

2015 · Life Sciences · Parasitology and Immunology · Host-parasite Relations

Life Sciences (XL) 2015

Which one of the following life cycle stages of Plasmodium falciparum is infectious?

A

Sporozoite

B

Cryptozoite

C

Merozoite

D

Trophozoite

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6

2016 · Life Sciences · Parasitology and Immunology · Host-parasite Relations

Life Sciences (XL) 2016

Toxoplasmosis in humans is caused by Toxoplasma gondii, an obligate intracellular parasite with two different life cycles, sexual and asexual. The sexual cycle occurs in which ONE of the following definitive hosts?

A

Dog

B

Cat

C

Rat

D

Human

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7

2016 · Life Sciences · Parasitology and Immunology · Host-parasite Relations

Life Sciences (XL) 2016

Entamoeba histolytica is an intestinal parasite that causes dysentery in humans. This parasite resides in the isotonic environment of intestine and other tissues in the human body and does not possess contractile vacuoles. If this parasite is placed in fresh water, it will

A

survive for long time, until they re-enter the host environment.

B

die due to hypo osmotic shock.

C

Not survive in water as they require high salt content.

D

die due to hyper osmotic shock.

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8

2017 · Life Sciences · Parasitology and Immunology · Host-parasite Relations

Life Sciences (XL) 2017

Malaria is caused by Plasmodium species, which is a parasite having a complex life cycle. The fusion between male and female gametocytes of Plasmodium happens inside

A

human liver

B

human RBCs

C

mosquito midgut

D

mosquito salivary glands

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9

2019 · Life Sciences · Parasitology and Immunology · Host-parasite Relations

Life Sciences (XL) 2019

Which one of the following parasites does NOT cause lymphatic filariasis?

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10

2020 · Life Sciences · Parasitology and Immunology · Host-parasite Relations

Life Sciences (XL) 2020

Among the following, which best describes an organism that lives at the expense of other organisms, harmful but usually not killing?

A

Predator

B

Symbiotic

C

Prey

D

Parasite

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11

2022 · Life Sciences · Parasitology and Immunology · Host-parasite Relations

Life Sciences (XL) 2022

Match the animals listed in Column I with primary tissue or organ of residence in the host listed in Column II

Column I	Column II
P. Ascaris lumbricoides	(i) Subcutaneous tissue in human
Q. Dracunculus medinensis	(ii) Lymphatic vessels and lymph nodes
R. Enterobius vermicularis	(iii) Small intestine
S. Wuchereria bancrofti	(iv) Caecum or vermiform appendix

A

P-(iii), Q-(iv), R-(ii), S-(i)

B

P-(i), Q-(iv), R-(iii), S-(ii)

C

P-(ii), Q-(iii), R-(iv), S-(i)

D

P-(iii), Q-(i), R-(iv), S-(ii)

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12

2023 · Life Sciences · Parasitology and Immunology · Host-parasite Relations

Life Sciences (XL) 2023

Which of the following is/are the causative agent(s) of Filariasis?

A

Wuchereria bancrofti

B

Leishmania donovani

C

Brugia malayi

D

Trypanosoma gambiense

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13

2024 · Life Sciences · Parasitology and Immunology · Host-parasite Relations

Life Sciences (XL) 2024

Which one or more of the following parasites is/are typically transmitted by mosquitoes as vector?

A

Leishmania donovani

B

Plasmodium vivax

C

Wuchereria bancrofti

D

Trichuris trichiura

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14

2026 · Life Sciences · Parasitology and Immunology · Host-parasite Relations

Life Sciences (XL) 2026

Which one of the following is a protozoal disease?

A

Cholera

B

Gonorrhea

C

Kala-azar

D

Syphilis

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15

2026 · Life Sciences · Parasitology and Immunology · Host-parasite Relations

Life Sciences (XL) 2026

Which one or more of the following terms describe(s) Toxoplasma gondii?

A

Virus

B

Parasite

C

Bacteria

D

Fungus

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