Which of the following diseases is vector-borne? MCQ with Answer and Explanation

Which of the following diseases is vector-borne?
A. Tetanus
B. Common cold
C. Plague
D. Typhoid
Answer: Option C
Solution (By JKSSB Mock Tests)
Plague is caused by Yersinia pestis and transmitted to humans by the bite of infected fleas (from rodents), thus vector-borne. Common cold is airborne, typhoid is water/food-borne, tetanus enters through wounds from soil. Other vector-borne diseases include malaria (mosquito), dengue (mosquito), Lyme disease (tick).

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Practice More Biology Questions

Question #1
The 'Hormone Growth Hormone' (GH), also known as somatotropin, is secreted by the anterior pituitary. Its primary effects include:
A. Inhibiting protein synthesis
B. Lowering blood glucose levels
C. Stimulating growth, cell reproduction, and cell regeneration, particularly in bones and muscles
D. Decreasing fat breakdown

Correct Answer: Option C


Explanation:
Growth Hormone (GH), or somatotropin, is a peptide hormone secreted by the somatotroph cells of the anterior pituitary gland. Its primary effects are to stimulate growth, cell reproduction, and cell regeneration, particularly in bones (stimulating the epiphyseal plates) and skeletal muscle. It also has significant metabolic effects: it increases protein synthesis (anabolic), promotes the breakdown of fats (lipolysis) to use as energy, and raises blood glucose levels (diabetogenic effect) by reducing glucose uptake by cells. Its effects are largely mediated by Insulin-like Growth Factors (IGFs), primarily produced by the liver.

This question belongs to: Science Biology
Question #2
The genus of the bacterium that produces the antibiotic streptomycin is:
A. Streptomyces
B. Aspergillus
C. Penicillium
D. Bacillus

Correct Answer: Option A


Explanation:
Streptomycin is produced by Streptomyces griseus, a soil actinobacterium. Penicillium is a mold producing penicillin, Bacillus species produce some antibiotics like bacitracin, Aspergillus produces other substances.

This question belongs to: Science Biology
Question #3
The process by which water enters the root hairs from the soil is:
A. Diffusion
B. Transpiration pull
C. Osmosis
D. Active transport

Correct Answer: Option C


Explanation:
Water moves from the soil (high water potential) into root hair cells (lower water potential due to solutes) by osmosis across the semipermeable membrane. Active transport is for minerals, transpiration pull is for upward movement.

This question belongs to: Science Biology