Human Health and Disease Questions — NEET Biology

Q1

Match each disease with its correct type of vaccine:

A Tuberculosis - harmful bacterium

B Whooping cough - inactivated toxin vaccine

C Diphtheria - killed toxin

D Polio - virus (live attenuated)

Correct Answer

Option D

Solution

(d) BCG (tuberculosis) = live attenuated; Whooping cough = killed pathogens; Diphtheria = toxoid; Polio = live attenuated virus.

Q2

Who discovered Plasmodium in RBCs of human beings?

A Ronald Ross

B Mendel

C Laveran

D Stephens

Correct Answer

Option C

Solution

(c) Laveran (1880) discovered Plasmodium in RBCs. Ronald Ross (1896) demonstrated transmission by mosquito.

Q3

Which part of life cycle of Plasmodium vivax is passed in female Anopheles?

A Sexual cycle

B Pre-erythrocytic schizogony

C Exoerythrocytic schizogony

D Post-erythrocytic schizogony

Correct Answer

Option A

Solution

(a) Plasmodium vivax completes its sexual cycle (gamogony) in the female Anopheles mosquito.

Q4

If all ponds and puddles are destroyed, the organism likely to be eliminated is

A Leishmania

B Trypanosoma brucei

C Ascaris

D Plasmodium

Correct Answer

Option D

Solution

(d) Anopheles mosquito (which transmits Plasmodium) breeds in stagnant water like ponds and puddles.

Q5

Correctly match sexually transmitted disease with its pathogen:

A Syphilis - Treponema pallidum

B AIDS - Bacillus anthracis

C Urethritis - Entamoeba gingivalis

D Gonorrhoea - Leishmania donovani

Correct Answer

Option A

Solution

(a) Syphilis is caused by Treponema pallidum (a spirochete bacterium).

Q6

In which disease does mosquito-transmitted pathogen cause chronic inflammation of lymphatic vessels?

A Elephantiasis

B Ascariasis

C Amoebiasis

D Ringworm disease

Correct Answer

Option A

Solution

(a) Wuchereria bancrofti transmitted by Culex mosquito causes filariasis/elephantiasis.

Q7

Ringworm in humans is caused by:

A Bacteria

B Fungi

C Nematodes

D Viruses

Correct Answer

Option B

Solution

(b) Ringworm is a fungal disease caused by dermatophytes Microsporum, Trichophyton and Epidermophyton.

Q8

Widal test is used for the diagnosis of

A Malaria

B Pneumonia

C Tuberculosis

D Typhoid

Correct Answer

Option D

Solution

(d) Widal test detects antibodies against Salmonella typhi, confirming typhoid.

Q9

The pathogen Microsporum responsible for ringworm disease belongs to the same kingdom as:

A Taenia, a tapeworm

B Wuchereria, a filarial worm

C Rhizopus, a mould

D Ascaris, a round worm

Correct Answer

Option C

Solution

(c) Microsporum is a Deuteromycetes fungus; Rhizopus is also fungi (Zygomycetes).

Q10

Grafted kidney may be rejected in a patient due to:

A Cell-mediated immune response

B Passive immune response

C Innate immune response

D Humoral immune response

Correct Answer

Option A

Solution

(a) Cell-mediated immunity causes graft rejection.