Download Session 11 Handout

Botany – Session 11
I.
Sexual Reproduction
a. Steps in Fertilization
i. _____________________________________________
ii. ________________________________________________________
1. There are a number of ____________in the wall of the pollen
and stigma used for recognition - if the pollen is compatible it
will germinate
a. These proteins are often responsible for _____________
iii. ________________________________________________________
1. As the pollen tube grows it digest the stigma and the stile
iv. ___________________________________________________
v. Once in the ovary the sperm enters the ________________ of the ovule
vi. In the ovule – ______________________________
1. Sperm + Egg = Embryo
2. Sperm + Polar Nuclei + Polar Nuclei = Endosperm (Food)
vii. The endosperm provides ___________ for the developing _________
viii. The _____________ dries and hardens to make a ________________
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ix. ______________________________________
1. ______________________________________
x. _____________________________________________________
1. Fruit = _________________________
II.
Classifications of Flowering Plants
Monocots (more advanced)
Dicots (more simple)
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III. Seed Morphology
a. Importance of the seed
i. ________________________________________________
ii. Generally the seed is genetically different from the parent
1. ____________________________________________
iii. ___________________________________________________
iv. ___________________________________________________
b. A typical Dicot Seed
i. Ex. Bean Seed
ii. Cotyledons are a ___________________________________________
1. In the dicot there are two cotyledons
2. Provide nutrition for young seedling
iii. __________________________________________________________
__________________________________________________________
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c. Typical Monocot Seed
i. Ex. Corn
1. ______________________________________________
2. Has economic importance because monocots are part of animal diet
and the ______________ is what provides ___________________
3. Cotyledon does not provide nutrients to embryo
a. Interesting Fact: when grains are milled the pericarp and
some of the endosperm are removed to make the grain for
white rice or white bread
b. Brown rice and wheat bread are more nutritious because
________________________________________________
1. Scutellum is another name for cotyledon
2. Coleoptile __________________________________________
3. Coleorhiza___________________________________________
4. Pericarp ____________________________________________
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