Unit 3 Review - Plant Systems

Unit 3 Review - Plant Systems

Smallest to Largest

• Cells are the smallest part of life

• Tissues - A group of specialized cells that work together to perform the same function.

• Organs - A group of two or more different types of tissue that work together to perform a specific function.

• Organ systems - A group of two or more organs that work together to perform a specific function. 

Multiple Choice

Phloem is a collection of cells that transport glucose throughout a plant. What level of classification is phloem?

• cell

• tissue

• organ

• organ system

Multiple Choice

What level of organization is a leaf?

• cell

• tissue

• organ

• organ system

Multiple Choice

The shoot system grows up while the root system grows down. What force is this a response to?

• sunlight

• gravity

• water

• soil

Multiple Choice

A plant growing on a table bends towards a nearby window. What is this a response to?

• sunlight

• gravity

• water

• soil

Multiple Choice

The plant on the right has the highest turgor pressure.

• true

• false

Multiple Choice

What force causes a seedling (baby plant) to break out of its seed and start to grow?

(think about it, which force will let the seed 'break out'?)

• gravity pulling the seed down

• gravity pushing the seed up

• turgor pressure (water) pushing out from inside the seed

• water pressure pushing in on the seed

Multiple Choice

Wilting (when plants look sad and droopy) is caused by:

• not enough water

• too much water

• not enough oxygen

• not enough carbon dioxide

Stomata

• Small holes in leaves that allow gas exchange.

• Open for photosynthesis (sunlight, water, and CO2 are present).

• Closed when photosynthesis CAN NOT happen to save water.

• Closed - No sun, not enough water.

Multiple Choice

It's a sunny day and there is a lot of water in the soil. Stomata are:

• open

• closed

Multiple Choice

It's a sunny day and there has not been any rain for a month. Stomata are:

• open

• closed

Multiple Choice

It rained all day and now it is night time. Stomata are:

• open

• closed

Multiple Choice

The plant tissue that carries water and minerals up from the roots to the leaves is called:

• xylem

• phloem

Multiple Choice

The plant tissue that carries glucose from the leaves to the rest of the plant is called:

• xylem

• phloem