Endosperm and Embryo Development
True/False
Seeds
Fruit Form and Function
Structure of the Mature Seed
100
How many cotyledons are in monocots?
One
100
Fires can trigger the end to seed dormancy
True
100
What triggers the end of seed dormancy?
Environmental Conditions
100
What does the ovary of a flower develop into?
A fruit
100
Name a monocot.
Corn, grass, etc.
200
What is the function of the endosperm?
It stores nutrients for after germination begins.
200
Coconuts are dispersed by wind
False
200
What triggers the straightening of the hypocotyl, separation of the cotyledons and the exposition of the epicotyl?
Light
200
What part of a plant do seeds develop from?
Seeds develop from the ovules.
200
What is the radicle?
Where the hypocotyl terminates, embryonic root.
300
What is the function of the seed coat?
It protects the seed.
300
The cotyledon is the first part to emerge
False
300
The uptake of water due to the low water potential of the dry seed is the definition for what?
Imbibition
300
If a flower has not been pollinated does a fruit usually develop?
No
300
What is one example of a seed with thin cotyledons?
Castor bean.
400
What is the function of the suspensor?
It anchors the embryo to the parent plant and transfers nutrients to the embryo.
400
Aggregate Fruit results from a single flower that has more than one separate carpel, each forming a small fruit
True
400
What is the embryotic root of the seed and the first organ to emerge?
Radicle
400
What kind of fruits are derived from a single carpel or several fused carpels?
Simple Fruits
400
What is the hypocotyl?
The embryonic axis, below where the cotyledons are attached.
500
What process partitions the cytoplasm of the endosperm?
Cytokinesis
500
An accessory fruit develops from an inflorescence
False: A multiple fruit develops from an inflorescence. An accessory fruit has other floral parts contribute to what is the fruit.
500
What shrivels up and falls during the last stage of seed germination?
Cotyledon
500
Give an example of a multiple fruit
Pineapple, fig, mulberry
500
A seed's water content is only about what percent when it enters dormancy?
5-15%
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