AP Biology 2006-2007 Plant Anatomy AP Biology Basic plant anatomy 1 root root tip root hairs.
-
Upload
yadiel-hazeltine -
Category
Documents
-
view
224 -
download
3
Transcript of AP Biology 2006-2007 Plant Anatomy AP Biology Basic plant anatomy 1 root root tip root hairs.
AP Biology 2006-2007
Plant Anatomy
AP Biology
Basic plant anatomy 1 root
root tip root hairs
AP Biology
Roots Roots anchor plant in soil, absorb
minerals & water, & store food fibrous roots (1)
mat of thin roots that spread out monocots
tap roots (2) 1 large vertical root also produces many small lateral,
or branch roots dicots
root hairs (3) increase absorptive
surface area
2
1
3
AP Biology
Stemshoot (stem) Support plant transport water through
xylem transport nutrients through
phloem a celery stalk soaked in food
coloring will absorb the food coloring, you can see the xylem
Two types of stems: herbacious and woody
AP Biology
Modified shootsstolons (strawberries) rhizome (ginger)
tuber (potato) bulb (onion)
AP Biology
Basic plant anatomy 3 root
root tip root hairs
shoot (stem) nodes
internodes buds
terminal or apical buds axillary buds flower buds & flowers
leaves mesophyll tissue veins (vascular bundles)
AP Biology
Leaves Function of leaves
photosynthesis energy production CHO production
gas exchange (stomata) Transpiration Cuticle: waxy covering of
leaf that prevents water losssimple vs. compound
AP Biologysucculent leaves
Modified leavestendrils (peas) spines (cacti)
colored leaves (poinsetta)
AP Biology
Flower•Reproductive organ of the plant •Flowers are usually both male and female •The male part of the flower is the STAMEN •The female part of the flower is the PISTIL •See your Flower Book for more detail on flower anatomy
AP Biology
Parts of the Flower• The receptacle (B) is the part
of the branch on which a flower forms.
• Sepals (C) are leaf like structures that surround and protect the flower before it blooms
• Petals (D) are the colorful part of the flower that attracts insects and even other small animals, such as mice, birds, and bats.
AP Biology
Parts of the FlowerThe flower has both male and female reproductive parts. • The female reproductive
structures are called carpels the carpels are fused together to form a pistil
The pistil (P) has three parts: 1. stigma (J) at the top is often sticky and is where the pollen attaches.2. Style (K) is the long tube that attaches the stigma to the ovary. 3. The ovules (O), or eggs, are stored in the ovary (L) until they are fertilized.
AP Biology
Parts of the FlowerThe flower has both male and female reproductive parts. The male reproductive structures are called the stamens.
Each stamen (H) consists of an anther (A), which produces pollen, and a filament (F), which supports the anther.
Pollen produced by the anther is carried by insects or other animals to the pistil of another flower where it may fertilize the eggs.
AP Biology
Plant ReproductionPlant ReproductionSexual reproduction in plants occurs when the pollen from an anther is transferred to the stigma. Plants can fertilize themselves: called self-fertilization. Self-fertilization occurs when the pollen from an anther fertilizes the eggs on the same flower. Cross-fertilization occurs when the pollen is transferred to the stigma of an entirely different plant.
When the ovules are fertilized, they will develop into seeds. The petals of the flower fall off leaving only the ovary behind, which will develop into a fruit. There are many different kinds of fruits, including apples and oranges and peaches. A fruit is any structure that encloses and protects a seed, so fruits are also "helicopters" and acorns, and bean pods. When you eat a fruit, you are actually eating the ovary of the flower.
AP Biology
Critical Parts of a Seed
BC The technical word for seed leaf is
cotyledon (A): you can find it on the coloring sheet; it is the first leaf to emerge from a developing seed.
The seed consists of the outside seed coat (B) and a large area called the endosperm (C) which functions as a source of reserve materials and food for the developing embryo. As germination occurs, the endosperm will be broken down and used by the plant.