Kingdom: Plants

Notes on Seeds!

Phylum Vascular

Angiosperms What are these?!

Network of veins Xylem carries

water___(up or down?)

Phloem carries down food

Important Prefixes

Epi Means up

Hypo Means down

That’s right: Scientists still use Greek all the time!

Seeds

Made up of three main parts!

1) Embryo (tiny plant)A. Consists of

Radicle Another word for

roots

First part of the seed to emerge during germination

3 Parts of Embryo

B. Hypocotyl The stem

Found above the radicle

In some plants, this becomes enlarged as a storage organ

Seeds

C. Epicotyl The leaf

In monocot plants, the first thing to appear coming out of the ground is the epicotyl

Main Parts of Seeds

2. Cotyledon Food supply for the

embryo Until the embryo

can produce food for itself through roots and leaves

Depends on the size of the seed

Larger seeds have food supply that can last 2 weeks!

Main Parts of Seeds

3. Seed Coat Protective Coat The tiny plant is

called an embryo because it cannot survive on its own!

Germination

When the seed starts to grow!

Depends on: Moisture levels Gases Temperature.

Some seeds lie dormant for many years!

Types of Seeds

Monocotyledon (Monocot)Dicotyledon

(Dicot)

Monocotyledon-(Monocot)

A seed with one seed leaf (cotyledon Does not naturally break

into two parts Examples:

Lilies Onions Garlic Grass Corn Rice Oats Barley

Monocots

Characteristics On the flowers, the

stamen and petals come in multiples of 3’s.

Leaves have parallel veins

Vascular tissue (Xylem and Phloem) are spread evenly throughout the stem.

Monocot Seed!

Draw the diagram and look at your previous notes to fill in the missing labels!

A. ______________.B. ______________.C. ______________.D. ______________.

Dicotyledon-(Dicot)

A seed with two seed leaves Naturally breaks into two parts 190,000 of the 260,000 species of plants are

dicots! Examples: peas, beans, peanuts, apples,

tomatoes, potato

Dicots

Characteristics Flowers

Stamen and petals are in multiples of 4 or 5.

Leaves Have branching

veins Stem

Vascular tissue grows on the outside ring. Trees making a

ring!

Dicot Seed (please draw)

Monocot or Dicot?

Monocot or Dicot?

Monocot or Dicot?

Monocot or Dicot?

Monocot or Dicot?

Monocot or Dicot?

Monocot or Dicot?

Monocot or Dicot?

Monocot or Dicot?

Monocot or Dicot?

Parts of a seed and embryo Differences between Monocot and Dicot Characteristics of them both

What we learned today