Vegetative reproduction is a form of asexual reproduction in plants. It is a process by which new individuals arise without production of seeds or spores. The methods of vegetative propagation include cutting, vegetative apomixis, layering, division, budding, grafting and tissue culture.

Correct Option: A

Vegetative reproduction is a form of asexual reproduction in plants. It is a process by which new individuals arise without production of seeds or spores. The methods of vegetative propagation include cutting, vegetative apomixis, layering, division, budding, grafting and tissue culture.

Normal blood pressure is considered to be at or below 120 over 80 (120/80). Normally, blood pressures are usually categorized into three groups: low (90/60 or lower), high (140/90 or higher), and normal (values above 90/60 and below 130/80).

Correct Option: A

Normal blood pressure is considered to be at or below 120 over 80 (120/80). Normally, blood pressures are usually categorized into three groups: low (90/60 or lower), high (140/90 or higher), and normal (values above 90/60 and below 130/80).

The opening and closing of heart valves is known as a heartbeat. The average human heart beats 100,000 times per day.

Correct Option: B

The opening and closing of heart valves is known as a heartbeat. The average human heart beats 100,000 times per day.

Hemophilia is a group of hereditary genetic disorders that impair the body's ability to control blood clotting or coagulation, which is used to stop bleeding when a blood vessel is broken. It has been associated with royal families due to inbreeding, and is sometimes called the 'Royal Disease,' Queen Victoria of England had this disease. However, it can occur in any family as a result of genetic mutation or a change in the genetic code.

Correct Option: B

Hemophilia is a group of hereditary genetic disorders that impair the body's ability to control blood clotting or coagulation, which is used to stop bleeding when a blood vessel is broken. It has been associated with royal families due to inbreeding, and is sometimes called the 'Royal Disease,' Queen Victoria of England had this disease. However, it can occur in any family as a result of genetic mutation or a change in the genetic code.

Interferons are proteins which render the cells less susceptible to attack by viruses. Interferons are proteins made and released by host cells in response to the presence of pathogens such as viruses, bacteria, parasites or tumor cells.

Correct Option: D

Interferons are proteins which render the cells less susceptible to attack by viruses. Interferons are proteins made and released by host cells in response to the presence of pathogens such as viruses, bacteria, parasites or tumor cells.