Im selling a super informative book that I used last year in my zoology class....actually the prof only had us read one excerpt which was disappointing cause I read the rest on my own (pleasure reading I know!) but anyways its good for inciting biology related debates and in class, an excellent source for research papers!
1. Name of textbook-The Nature of Life-Readings in Biology
2. Student or Instructor's book? student
3. Author(s) forward by Lynn Margulis and Dorian Sagan (its a compilation of bio essays)
4. Publisher Great Books Foundation
5. Edition n/a
6. ISBN # 1-880323-86-9
7. Condition of book new
8. Any supplimental materials (i.e., study guides, code cards, MyLab, CDs)n/a
9. Price I bought it for 80 but will sell it for 35 (price is negotiable)
10. Links to your auctions n/a
The cover of the book is green with a monkey on it.....
Any questions or offers please AIM me at doremimanda or email me at doremimanda@aol.com or comment here
we're dead.
WE'RE DEAD !!!!!
huffpuffhuffpuff.
-
- Current Mood
-
auuguhhhhg
Hey you guys so yes the ap exam is soooo soon about 60 days i believe and omg what chapter is everyone on? i am afriad i wont pass!
Part E yucca
12. The guard cells and stomata of the Yucca leaf are significantly smaller to reduce water loss. Since Yucca leaves are found mostly in dry, desert areas, they need to conserves water to survive.
13.) Air spaces are absent because of the yucca plant’s reduced size. (Leaves in dry areas tend to be smaller), also since the stomata are smaller, less air is let in, which results in smaller air spaces.
Monocot/dicot leaves
15.) Monocots do not have palisade or spongy layers. Monocot leaves are not as complex or organized as the dicot, and are without specific cells and layers.
Formulating generalizations
1.) Palisade cells are used primarily for photosynthesis, so the length or size of the palisade cell is directly related to amount of photosynthesis the cell does. If the plant that contains the palisade cell is highly photosynthetic, it will have larger palisade cells in order to increase the area to which sunlight can hit. Size of palisade cells is dependent on the location of the cells (i.e. The cell could be a part of the leaf or the stem. In that case, the palisade cells would be larger in the leaf, since that is where most photosynthesis occurring.) It also depends on the amount of sunlight that the cell is exposed to, and the environment that the plant is located.
1. The length of the palisade depends of the amount of photosynthetic activity in the cell. For example, the pear leaf in the shade has a much smaller palisade layer then leaf in the sun. The lager cells in the palisade layer have more chloroplasts which elongate the cell. A larger layer is probably necessary to accumulate the light being absorbed by the plant. Also, plant in water tend to have smaller palisade layers because they only absorb a weak sunlight. The palisade layer in the yucca is also smaller, because on the intensity of light in desert causes the plant to not want to absorb a lot of sunlight. The sunlight triggers photosynthesis and water is released, so the yucca probably does not want to do as much photosynthesis to keep the water.
Water Lily Question
9. The water lily has a very think palisade layer that is many cells thick instead of just one of two.
10. The air spaces may give the water lily buoyancy in the water to stay afloat and not sink. They possibly undergo a lot of cell respiration.
11. The guard cells and stomata are found on the top of the leaf to absorb sunlight and exchange gases because gas exchange is severely limited under water.
tired