Biology Quiz 5

Birds which swim in water have webbed feet. Ducks, geese, and swans all have webbed feet. The primary use for webbed feet is paddling through the water.

Aflatoxins are produced by fungi. They are a family of toxins produced by certain fungi that are found on agricultural crops such as maize (corn), peanuts, cottonseed, and tree nuts.

The Red Data Book is a public document that is created for recording endangered and rare species of plants, animals, fungi as well as some local subspecies that are present in a particular region.

Adrenaline is a neurotransmitter in the sense that, within the brain, it helps neurons to communicate with one another.

Whale, Bat, Kangaroo and Hippopotamus belong to the class Mammalia. Penguins and Ostrich are a group of aquatic flightless birds not belonging to the class Mammalia.

Vitamin E is particularly important for the normal activity of sex glands as it improves blood flow and oxygen to sexual organs. It is an antioxidant that helps to maintain healthy skin, eyes and hormonal balance. It also enhances immune function and prevents clots from forming in heart arteries.

Sporozoite is the infective stage of the Malarial Parasite. Malaria infection begins when an infected female Anopheles mosquito bites a person, injecting Plasmodium parasites, in the form of sporozoites, into the bloodstream. The sporozoites pass quickly into the human liver. The sporozoites multiply in the liver cells, causing no symptoms.

Rayon (also called viscose) is a semi-synthetic fiber, made from natural sources of regenerated cellulose, such as wood and related agricultural products. It has the same molecular structure as cellulose. It is also called viscose.

Fat produces the highest amount of energy upon oxidation. It is the slowest source of energy but the most energy-efficient form of food. Each gram of fat supplies the body with about 9 calories, more than twice that supplied by proteins or carbohydrates.

Tuberculosis (TB) is caused by a bacteria called Mycobacterium tuberculosis. TB bacteria spread through the air from one person to another. When a person with TB disease of the lungs or throat coughs or speaks, TB bacteria can get into the air. People nearby may breathe in these bacteria and become infected.