1. Anatomy of a pine.
a) Place your open seed cone into a cup of tap water.
b) Record: Time into water _2200________
Cone appearance _pine cone ________________________
c) Let the cone sit in the water for at least 30 minutes.
d) Record: Time out of water _2230______
Cone appearance ___cone appeared moist and started to open ______________________
2. Vascular transport.
a) Examine the top of the celery stalk. Record your observations:
The top of the celery had blue stains. The top seemed to have many little blue dots.
b) Make a cross-section cut where the celery stalk has not been split. Record your observations:
3. Answer the following questions about seed dispersal.
It is important for a parent plant to disperse its seed for many reasons. The ability for the plant to grow near the parent plant may be unfavorable for the plant. Also this may help increase the plants chance for survival. Seed may land on surfaces that provide better nutrients for it. Weather can also damage the seeds, therefore being dispersed to a place that can protect it from the elements can also increase its survival.
Gymnosperm such as (pine, spruce, and douglas fir) have winged seeds dispersed by wind. Other gymnosperms have nuts which are spread by nut-eating animals such as squirrels.
Angiosperm such as ( willows, apple trees, and mangroves adapt and use the environment around them to disperse their seeds.
Redwoods may only release their seeds during a fire due to them adapting to an environment where fires have become part of their life cycle. Fresh nutrients and low competition for direct sunlight are the product of a fire, giving seeds a better survival.
4. Which direction does xylem flow? What about phloem?
Water enters thru the roots of a plant and flows upwards to the rest of the plant.
Water flows down from the leaves to the steam to the roots.
5. Use Figure 5.4 to answer this question. What is the function of:
Is the embryonic root inside of the seed. It is the first thing to emerge out of a seed and down into the ground to allow the seed to suck up water and send out its leaves so that it can start photosynthesizing.
The hypocotylis is like a stem of a germinating seed. Hypocotyls