Warm Up: Plant Science Part Two!!!

1. Of what value are tubers, a type of stem modification, to the survival of a plant species?

Tubers are a modified plant structure that are enlarged to store nutrients. They are used by plants to survive the winter or dry months, to provide energy and nutrients for regrowth during the next growing season.

2. When moving a plant from one place to another, why is it important to leave original soil around the roots?

It is important to leave original soil around the roots of a plant when moving its location because the original soil will allow the plant to have a nice transition to its new environment. It lets it slowly adapt and become situated in the new location. If it were to be moved without any original soil, the change may be too drastic or fast for the plant to be able to process it and adapt. This might lead to a very sad death. 

3. What is the usual cause when a plant wilts?

The cause for a plant wilting is usually a lack of water in the plant's cells, which is means it has a lower turgidity. This reduces its ability to remain rigid or erect. The poor guy sadly wilts from thirst!

4. Explain when a seed would be a sink and when it would be a source

Source: produces and stores carbohydrates
Sink: consumes those carbohydrates
 The movement of carbohydrates occurs from where carbohydrates are made or have been stored, called a source, to where they will be stored or used, called a sink.

5. Why is it necessary that veins are relatively close together in the leaves?

Distance between veins shows how well the veins are supplying resources to the leaf. Plants with denser vein networks -- veins that are closer together -- are able to withstand higher levels of water loss and absorb more carbon.