1. oversecretion of the salivary glands
2. overproduction of auxins
3. deterioration of the skeletal system
4. malfunction of the endocrine glands

Correct Answer Number: 4

Explanation: The thyroid gland, located in the neck, is an endocrine gland that secretes hormones directly into the bloodstream. The hormone thyroxine regulates the rate of metabolism, or how fast or slow you perform life functions. Salivary glands produce enzymes to break down carbohydrates, auxins are the names of plant hormones, and the skeletal system allows us to move.

1. release of carbon dioxide into the lymph
2. filtering of glucose from the lymph
3. release of oxygen into the lymph
4. filtering of bacteria from the lymph

Correct Answer Number: 4

Explanation: The lymphatic system not only regulates fluid amounts in the blood but also helps to fight infection. The lymph nodes located throughout our bodies, produce white blood cells and filter harmful bacteria, which is why they tend to enlarge when we have an infection.

1. surface area
2. food production
3. water loss
4. fungus resistance

Correct Answer Number: 3

Explanation: The cuticle is the waxy covering on the surface of a leaf that prevents water from evaporating. It does not change the size, or surface are of the leaf. Food production might actually decrease without a cuticle since water is necessary for photosynthesis. The cuticle may also help to resist fungus' so by removing it you would be decreasing the fungus resistance.

1. phagocytic white blood cells
2. pinocytic red blood cells
3. plasma
4. platelets

Correct Answer Number: 1

Explanation: Phagocytic white blood cells engulf bacteria much like an ameba engulfs paramecium. They are involved in our second line of defense against harmful pathogens. The first line is protective barriers meant to prevent the pathogens from entering our body such as skin, tears, and mucus. If the phagocytes can't destroy all bacteria, then the third line of defense goes into action, namely our immune system, where antibodies are made to fight the invading pathogen.