Advertisement Upgrade to remove ads

Herbs

never grow woody tissue. They are usually green-stemmed, often short-lived (annuals) and soft. Examples: Herb Robert, stinging nettle, buttercup

Shrubs

do grow woody stems and live for years (they're perennials.) They are relatively low in stature compared to trees, and they lack a central main trunk. A typical shrub will have several stems arising from the ground. Examples: blackberry, Oregon grape, willow

Trees

grow woody tissue and can live for centuries. They do have a central trunk. Examples: bigleaf maple, cottonwood, douglas fir

Cuticle

protects from (water getting soggy) and slows down transpiration ( the loss of water)

Epidermis (upper and lower)

provides the first layer of protection, protects against water loss, regulates gas exchange, and (especially in roots) absorbs water and mineral nutrients.

Palisade Mesophyll

has most of the chloroplasts and is where most photosynthesis takes place.

Spongy Mesophyll

has stomata and is the site transportation and gas exchange.

Stomata

special cells allow stomata to close to prevent water loss, or to open to allow air to move in and out.

Xylem

transport water, but it also transports some nutrients through the plant.

Phloem

carries the products of photosynthesis through the plant.

Please allow access to your computer’s microphone to use Voice Recording.

Having trouble? Click here for help.

We can’t access your microphone!

Click the icon above to update your browser permissions above and try again

Example:

Reload the page to try again!

Reload

Press Cmd-0 to reset your zoom

Press Ctrl-0 to reset your zoom

It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.

Please upgrade Flash or install Chrome
to use Voice Recording.

For more help, see our troubleshooting page.

Your microphone is muted

For help fixing this issue, see this FAQ.

Star this term

You can study starred terms together

NEW! Voice Recording

Create Set