Unit 8 Retest Practice

Which body systems work together to protect the body from pathogens?

• Muscular & Vascular

• Digestive & Excretory

• Circulatory & Immune

• Endocrine & Reproductive

How do the circulatory system and immune system work together to respond to an injury?

• Increased blood flow allows for an increase in the exchange of O2 and CO2 at the site of the injury.

• Increased blood flow removes infected cells from the body at the site of the injury.

• Increased blood flow kills healthy cells which prevents infection at the site of the injury.

• Increased blood flow carries white blood cells to the site of the injury.

After the anther produces pollen, what structure on the flower must then receive the pollen for fertilization to start?

• Ovary

• Stigma

• Style

• Filament

Guard cells close the _____ to prevent excess water loss.

• collenchyma

• epidermis

• trichomes

• stomata

The surface of the stomach is lined with epithelial cells called surface mucous cells. These cells produce a thick mucus that coats the epithelium on the inside surface of the stomach. What is the purpose of the mucous coating?

• It traps nutrients inside the epithelium as food passes through the stomach.

• It protects the epithelium from the acid content of the stomach.

• It causes the epithelium to expand as food enters the stomach.

• It allows the epithelium to aid in the process of digestion.

Put the following steps in the correct order.

• I, II, III

• III, II, I

• III, I, II

• II, III, I

The response represented in the illustration would most likely be caused by...

• a reduced supply of oxygen

• high concentrations of glucose

• long periods of rainfall

• little available water

A plant's response to gravity is called...

• Thigmotropism

• Geotropism

• Phototropism

• Hyrdrotropism

The hormone auxin causes the cells on the shady side of a plant shoot to elongate. This kind of response is called...

• phototropism

• geotropism

• hydrotropism

• thigmotropism

Which of the following functions at the same organizational level as the stomach?

• Skeleton

• Epithelial tissue

• Liver

• A squamous cell