Vegetative Propagation Flashcards
Give two features of vegetative propagation?
No gametes
Variations
One parent
Suggest a benefit of artificial vegetative propagation
Rapid
More reliable
Cheap
How can you tell a plant is a stem from external observation and through a microscope
External observation - buds
Microscope - vascular bundles
Would you expect the daughter plant to be haploid or diploid of a runner and why?
Diploid - mitosis
What evidence is there in a diagram of a runner that sexual reproduction has taken place?
Fruit
Give two differences between vegetative propagation and sexual reproduction
No gametes
Quick
No outside agent required
Distinguish between tuber and bulb
Tuber- stem
Bulb -bud
Give four examples in nature of asexual reproduction in plants
Stem
Root
Leaf
Buds
How does asexual reproduction occur?
Part of the plant becomes separated from the parent plant and divides by mitosis to grow into a new, genetically identical plant
What is vegetative propagation?
Asexual reproduction in plants
Give an example of a modified stem above ground
Runners [strawberries]
Give an example of a modified stem below ground
Stem tubers eg, potato
Give two features of runners
Horizontal stems
Long internodes [buds formed at each node]
Above ground
Give an example of a modified root
Root tuber eg, dahlia
Give two features of root tubers
Swollen fibrous roots
Tuber stores food
Remains dormant over winter
Give an example of modified leaves
Plantlets eg, lily
Give an example of modified buds
Bulbs eg, onion
Give two features of a modified bud
Underground stem
Leaves are swollen stored with food
Main bud [apical] grows into new shoot
Side buds [lateral] grow into new shoots too
Diagram of onion!!
Check hardback!
[6 labels]
Give four examples of artificial asexual reproduction
Cuttings, Grafting, Layering, Micropropagation
Give an example of a plant that is reproduced by cuttings
Busy Lizzie
Explain cuttings
Parts of plant [usually shoots] removed from plant and rooted in rooting powder [growth promoter]
Give an example of a plant that is reproduced by grafting
Rose flower
Explain grafting
Part of one plant [scion] is removed and attached to a healthy rooted part of a second plant [stock]
Give an example of a plant that is reproduced by layering
Blackberry
Explain layering
A branch of a plant is a bent over so that when roots develop, the branch is separated from the parent plant
[useful for propagation of Woody plants]
