Typhoid fever is an infection that causes diarrhea and a rash. It is most commonly due to a type of bacterium called Salmonella typhi (S. typhi). S. typhi is spread through contaminated food, drink, or water.

Correct Option: A

Typhoid fever is an infection that causes diarrhea and a rash. It is most commonly due to a type of bacterium called Salmonella typhi (S. typhi). S. typhi is spread through contaminated food, drink, or water.

Keratin is a family of fibrous structural proteins. It is the key structural material making up the outer layer of human skin. It is also the key structural component of hair and nails. Another example of fibrous protein is collagen.

Correct Option: C

Keratin is a family of fibrous structural proteins. It is the key structural material making up the outer layer of human skin. It is also the key structural component of hair and nails. Another example of fibrous protein is collagen.

There are three basic classes of photosynthetic pigments: Chlorophylls (greenish pigments), Carotenoids (usually red, orange, or yellow pigments) and Phycobilins (water-soluble pigments found in the cytoplasm). Anthocyanins play no part in photosynthesis.

Correct Option: D

There are three basic classes of photosynthetic pigments: Chlorophylls (greenish pigments), Carotenoids (usually red, orange, or yellow pigments) and Phycobilins (water-soluble pigments found in the cytoplasm). Anthocyanins play no part in photosynthesis.

Bonsai is the art of aesthetic miniaturization of trees and plants in containers. A bonsai plant is not a dwarf plant but equal to the full sized flowering plant. The main objective of bonsai plants is to create a tree or plant, and even landscapes, in miniature.

Correct Option: A

Bonsai is the art of aesthetic miniaturization of trees and plants in containers. A bonsai plant is not a dwarf plant but equal to the full sized flowering plant. The main objective of bonsai plants is to create a tree or plant, and even landscapes, in miniature.

The ‘survival of the fittest’ quotation is attributed to Charles Darwin. He said, “It is not the strongest or the most intelligent who will survive but those who can best manage change.” However, Herbert Spencer first used the phrase – after reading Charles Darwin’s On the Origin of Species – in his Principles of Biology (1864).

Correct Option: A

The ‘survival of the fittest’ quotation is attributed to Charles Darwin. He said, “It is not the strongest or the most intelligent who will survive but those who can best manage change.” However, Herbert Spencer first used the phrase – after reading Charles Darwin’s On the Origin of Species – in his Principles of Biology (1864).