The old, worn out and dead RBC are destroyed mainly in an organ called spleen. Hence, it is commonly called the 'graveyard of RBC'.

Correct Option: C

The old, worn out and dead RBC are destroyed mainly in an organ called spleen. Hence, it is commonly called the 'graveyard of RBC'.

The color of normal urine is usually light yellow to amber. Generally, the greater the solute volume the deeper the color. The yellow color of urine is due to the presence of a yellow pigment, urochrome. Deviations from normal color can be caused by certain drugs and various vegetables such as carrots, beets, and rhubarb.

Correct Option: D

The color of normal urine is usually light yellow to amber. Generally, the greater the solute volume the deeper the color. The yellow color of urine is due to the presence of a yellow pigment, urochrome. Deviations from normal color can be caused by certain drugs and various vegetables such as carrots, beets, and rhubarb.

A chromosome is an organized structure of DNA and protein found in cells. It is a single piece of coiled DNA containing many genes, regulatory elements and other nucleotide sequences. Chromosomes also contain DNA-bound proteins, which serve to package the DNA and control its functions.

Correct Option: C

A chromosome is an organized structure of DNA and protein found in cells. It is a single piece of coiled DNA containing many genes, regulatory elements and other nucleotide sequences. Chromosomes also contain DNA-bound proteins, which serve to package the DNA and control its functions.

Minamata disease is a neurological syndrome caused by severe mercury poisoning. It was first discovered in Minamata city in Kumamoto prefecture, Japan, in 1956

Correct Option: C

Minamata disease is a neurological syndrome caused by severe mercury poisoning. It was first discovered in Minamata city in Kumamoto prefecture, Japan, in 1956

In tetrapod anatomy, the trachea or windpipe, is a tube that connects the pharynx and larynx to the lungs, allowing the passage of air. It is lined with pseudo-stratified ciliated columnar epithelium cells with goblet cells that produce mucus. This mucus lines the cells of the trachea to trap inhaled foreign particles that the cilia then waft upward toward the larynx and then the pharynx where it can be either swallowed into the stomach or expelled as phlegm.

Correct Option: B

In tetrapod anatomy, the trachea or windpipe, is a tube that connects the pharynx and larynx to the lungs, allowing the passage of air. It is lined with pseudo-stratified ciliated columnar epithelium cells with goblet cells that produce mucus. This mucus lines the cells of the trachea to trap inhaled foreign particles that the cilia then waft upward toward the larynx and then the pharynx where it can be either swallowed into the stomach or expelled as phlegm.