Home > Uncategorized > Introduction to Human Anatomy Lecture 81 Notes: Flowers

Introduction to Human Anatomy Lecture 81 Notes: Flowers

Overview

We’ll review the flower lecture again, today for 39 minutes. 

http://www.youtube.com/watch?v=lX7dmgjwYIg&feature=plcp

Details

Angiosperms are flowering plants.  Vegetative or non-sexual reproduction.  Roots and leaves grow from a potatoe’s eyes.  Strawberries have horizontal roots with runner that develop new plants. 

Outer leaves are sepals, petals, male parts or stamen, in the center is the female part the pistole.  Usually there is only one pistole.  The very top part is sticky and is called the stigma.  The style leads to the ovary inside.  Inside the ovary are eggs or ovules. 

Monocots have multiples of 3 stamen, dicots have multiples of 4 or 5 stamen.  The anther of the stamen is where the pollen is. 

Petals surround the stamen.  Bright colors if the plant is insect pollonated.  Sepals may be the same color as the petals.  All petals are called the corolla.  The corex is the sepals. 

In a monocot, the sepals are all in a line.  In a dicot, they branch. 

WHen the petals are all similar, the flower is regular.  There are irregular flowers.  All petals joined together is the corolla tube. 

Perfect flowers have both pistoles and stamen.  Imperfect has either or.  Stamanate, pistole imperfect. 

Ovary enlarges into a Fruit

Pollen transfered to sticky stigma is pollenation. 

An apple was a fruit.  The strange part on the bottom was the flower part.  The fleshy part is the ovary, that got big.  Seeds are inside.  A peach has one big seed.  String beans and bell peppers are fruits; they have seeds inside. 

Fertilization is when the macrogamete unites with the microgamete. 

ugamete + macrogametet = embryo = seed = ovary

The fruit of a rose is rose hips. 

Review

Electrophiles are positive, nucleophiles are negative

Activators donate electrons to the ring, deactivators take electrons from the ring

Cat hearing – 80 Hz to 80 kHz

NO2 meta director

CH3 OP director

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