Biology Quiz 5

Locked jaw disorder is the other name of the disease Tetanus. It is a serious bacterial infection which affects the muscles and the nervous system throughout the body. This infection often affects the muscles of the neck and jaw, but eventually spreads to the rest of the body.

Olive oil is one of the healthiest edible oil for the heart. It is a great source of monounsaturated fatty acids (MUFAs). MUFAs fall under the category of healthy dietary fats. These healthy fats are known to reduce the risk of heart disease by keeping cholesterol levels in check.

colour blindness, inability to distinguish one or more of the three colours red, green, and blue. A man with colour blindness will see red as Green.

The part of the root involved in water absorption is zone of root hairs. Root hair found on roots causes an increase in the surface area of roots. This leads to the absorption of minerals and water that are dissolved in the absorbed water. Xylem is the tissue of vascular plants that transports water and nutrients from the roots of a plant to the tips of the leaves.

The tusks of an elephant are upper incisors that are modified to become long and curved. They replace deciduous milk teeth at 6–12 months of age and grow continuously at about 17 cm (7 in) a year.

The starfish has respiratory organ but does not have brain. They have a complex nervous system that allows them to make a decision. This nervous system is centralized in the ring around the mouth.

Conduction and respiration are associated with plants during the dark period. Conduction is the process by which vital nutrients are transported to the different parts of a plant. This process is independent of the light factor. Respiration always occurs in plants, but night respiration is more evident since the photosynthesis process ceases.

The best wavelengths of visible light for photosynthesis fall within the blue range (425–450 nm) and red range (600–700 nm). Therefore, the best light sources for photosynthesis should ideally emit light in the blue and red ranges. Green light is the least effective in photosynthesis.

Ano-Genital Warts (AGW) is usually a sexually transmitted disease (STD) which is caused by HPV (human papilloma virus). HIV infection and AIDS is a spectrum of conditions caused by infection with HIV, a retrovirus. AIDS was first recognized by the United States Centers for Disease Control and Prevention (CDC) in 1981 and its cause—HIV infection—was identified in the early part of the decade.

An ecosystem consists of a biotic community and its non-living elements. It consists of all the organisms and the physical environment with which they interact. These biotic and abiotic components are linked together through nutrient cycles and energy flows.