Seed Dispersal
What is seed dispersal?
When seeds are moved by abiotic or biotic forces from their parent plant
Name three plants that can be grown by asexual reproduction
scallions, onions, celery, lettuce, carrots, etc.
What does a seed need to germinate:
A: Water
B: Sunlight
C: Soil
D: All of the above
A
What is a hilum?
The mark on the seed coat where the seed was attached to the ovary.
What are four major kinds of seed dispersal?
Wind, water, fire, animal
How many parent plants are needed for sexual reproduction?
One
What three parts do all seeds have?
Embryo, seed coat, cotyledon
What is a bulb?
Underground stem covered with fleshy leaves
Explain wind dispersal
Light, fluffy seeds or seeds with a "helicopter" or other special shape are blown far away by the wind
What is the organ of reproduction in a tuber?
The eye
Food inside a seed is stored as...
Starch
What is a seed coat?
The outside covering of a seed
Give an example of animal dispersal
Answers will vary
What is vegetative propagation ?
A kind of asexual reproduction that uses parts of plants to grow new plants.
What is the job of the seedcoat?
To protect the seed embryo.
What does it mean to germinate?
To grom from a seed into an embryo plant
Describe fire dispersal
The heat of a forest fire melts the resin that holds the seeds inside the cone. When the resin melts the seeds drop out and can now grow in the barren land created by the forest fire
What is one benefit of vegetative propagation for farmers/gardeners?
It takes less time to grow a plant from an adult plant or cutting than to start from seed. Greater yield (multiple cuttings from one plant or multiple eyes from one tuber)
What is the job of the cotyledon?
They store food for the developing plant
Define asexual reproduction
Asexual reproduction is a form of reproduction needing only one parent.