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10 Cards in this Set

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  • Back
What is the suspensor?
The elongated structure that links the embryo with the nutrient tissue of the seed.
What are the three embryonic plant tissues and what do they become?
Protoderm (dermal tissue), ground meristem (ground tissue), and procambium (vascular tissue).
What are the four ways that seeds are important?
1. Seeds postpone development until conditions are favorable.
2. Seeds protect the young plant.
3. Seeds provide food for the young plant.
4. Seeds are adapted for dispersal.
What does the fruit develop from?
The ovary (carpel).
What are the different types of fruit?
Follicles (one split edge), Legumes (two split edges), Samaras (no split edges, wing), Drupes (pit with single seed), True Berries (multiple seeds, thin skin), Hesperidia (multiple seeds, leathery skin), Aggregate Fruits (multiple ovaries, single flower), Multiple Fruits (multiple flowers).
What is germination?
The resuming of embryonic growth in a seed. Often defined as the emergence of the radicle (first root) from the seed coat.
Many seeds will not germinate until they have been stratified. What does stratified mean?
Held for a duration of time at a low temperature.
What are amyloplasts?
Colorless plastids that store starch and that are used by early seedlings for energy.
What is the scutellum?
It is a conduit for nutrients from the endosperm to get to the embryo. It develops from the cotyledon of cereal grains.
What is the aleurone? It produces ________ when triggered by ________. What does the product enzyme do?
The outer layer of the endosperm. Alpha-amylase. Gibberellic acid. Convert endosperm starch into sugar.