So what is pollinationfertilizationgermination Pollination Transfer of pollen

So what is pollination/fertilization/germination ? ? ?

Pollination: Transfer of pollen from anther to the stigma

How many methods of pollination do you know?

Ways in which pollination occurs • Rain

• Wind

• Insects

Manually

Gravity

Fertilization: • Joining of two gametes (male + female cells) to form a new organism.

Germination: When a seed changes from a dormant to an active condition.

What is required for germination?

Varies depending upon plant

General Requirements • Adequate moisture • Favorable Temperatures • Presence of oxygen

Vernalization • Some seeds require cold to open the seed coat.

Scarification • Some seeds require abrasion to open the seed coat. • Freezing and thawing. • Pass through digestive tract of animal. • Manually

Your task is to make a flower model to illustrate pollination using the guide posted on my website.

Terms to know: Cotyledon First seed leaves Radicle First root Endosperm Initial nutrient source for seedling • Seed Coat • Provides Protection • • Germ • Embryonic plant

What is the difference between monocot and dicot plants? Monocot • • • Seed can not be split in two. Single cotyledon Parallel veins Fibrous roots Grass type plants Flower petals multiples of 3 Dicot • • • Seed can be split in halves Two cotyledons Net like veins in leaf Tap root Broadleaf type plants Petals multiples of 4 or 5

Take 5 monocot and 5 dicot seeds. “Plant” them in brown paper towel and watch the parts emerge over the next several days. Record your observations. Communicate with your instructor to identify the parts.

Monocot Germination Parts Single Cotyledon Coleoptile (Seeks out light) Radicle 21

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