Biology Chapter 2 Test Review

One of the most important types of meristematic tissue is tissue.

The parts of a plant cell that separate its contents from the surrounding environment is called either a cell or a cell .

The part of a plant cell that controls the cell's activities is called the .

Three types of venation are , , and .

The structures in a plant cell that carry out photosynthesis are called .

The purpose of cork tissue is to and the stem.

The purpose of parenchyma tissue is to and food.

The purpose of the leaf's epidermis is to and the leaf surfaces.

The purpose of vacuoles is to food materials, fluid substances, and minerals.

This is the process of photosynthesis. The plant uses the energy of the to split the molecules into hydrogen ions and oxygen. The hydrogen ions are combined with from the air to form , a simple sugar.

When the layer forms, the in the leaf begins to deteriorate, allowing other pigments that had previously been by the chlorophyll to become visible.

How do guard cells help conserve water? When is being lost faster than it can be replenished, the cells lose pressure and close the . This reduces the rate of and water loss.

Why is the concept of the "simple cell" not valid?
A single cell is like a tiny self-contained with its own plants, chemical factories, food , disposal facilities, and networks, all directed automatically by programs in the cell's center.

Explain why a leaf would not function correctly without veins. Veins are needed to water and other nutrients to the leaf from the and to transport sugars produced in the to the other parts of the plant.