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WorksheetsPlant Propagation Review
Total questions: 40
Worksheet time: 20mins
Producing plants from seed is a type of ________________ propagation.
Asexual
Bisexual
Sexual
Unsexual
When two separate parent plants are involved in the pollination process, it is known as ________________________________.
Cross - pollination
Self - pollination
Bisexual pollination
Asexual pollination
The first part of the new plant to emerge from the seed is the ______________________.
Hypocotyl
Epicotyl
Radicle
All of the above
Hybrid seeds are developed because they ____________________________________________.
Provide greater vigor
Produce better crops
Are more uniform
All of the above
The label in a flat of seeds should include the ________________________________.
Name or type of plant, cultivar, and date seeded.
Date seeded and the selling date.
Percent of germination listed on seed pack.
All of the above
All of the following are required for germination to occur EXCEPT _____________________________.
Water
Light
Oxygen
Proper Soil Temperature
Which part of the seed develops into the seedling’s stem?
Hypocotyl
Radicle
Epicotyl
All of the above
A tissue in a seed that provides stored food for the embryo is __________.
endosperm
zygote
seed coat
hypocotyl
_________ is the process of softening or breaking a seed coat in order to overcome seed dormancy.
Scarification
Stratification
Ratification
Augmentation
The top portion of a graft union is referred to as a _________________.
Rootstock
Graft union
Hypocotyl
Scion
The main difference between grafting and budding is ________________________.
Graft unions are treated with rooting hormone to stimulate rooting and bud grafts are not.
Grafting uses budstock as the scion instead of a mature shoot.
Budding only occurs during the dormant season(s).
The scion in grafting is a mature shoot, while the scion in budding is a bud (budstock).
In grafting, great care must be used to match which layer of the scion and rootstock?
Woody
Cambium
Bark
Outside
The bottom portion of the graft union is known as the _____________________________.
Rootstock
Cambium
Scion
Splice
Which grafting technique is displayed in this image?
Cleft
Whip & Tongue
Saddle
Splice
Which grafting technique is displayed in the image?
Cleft
Whip & Tongue
Tip
Saddle
Which grafting technique is displayed in this image?
Splice
Cleft
Whip & Tongue
Slice
Which of the following plants can be propagated via grafting?
Wandering Jew
Peaches
Golden Pothos
Clematis
All of the following are required for successful graft unions EXCEPT _________________________________.
Scion wood and rootstock must be compatible.
Graft union must be wrapped and protected from drying out (desiccation).
The base of graft cuts must be made at a 45 degree angle.
Rootstock and scion wood must be dormant.
What time of year are bud grafts typically taken?
When scion wood and rootstock are dormant.
Winter
Summer through early Fall
Winter through early Spring
What is the advantage of budding in comparison to grafting?
It allows growers to propagate plants during the dormant season.
It requires less expertise to perform successfully.
It allows the grower to propagate plants during the growing season and they take quicker than grafts.
All of the above
The development of roots on a stem while the stem is still attached to the parent plant is a propagation method known as _____________________________________________.
Herbaceous cuttings
Separation
Grafting
Layering
All of the following are examples of layering techniques EXCEPT __________________________.
Herbaceous
Air
Simple
Serpentine (Compound)
Which layering technique is displayed in this image?
Air
Mound
Simple
Serpentine (Compound)
Which layering technique is displayed in this image?
Air
Serpentine (Compound)
Simple
Mound
In air layering, cutting the bark off the stem, known as girdling, ____________________________.
Stimulates root formation
Helps in breaking off the stem when it is rooted.
Gradually starves the stem.
All of the above
How are air layering wounds protected from drying out?
They are wrapped in soaked sphagnum moss and wrapped with foil or grafting tape.
They are treated with rooting compound and heavily drenched.
They are treated with nitrogen - based fertilizers.
All of the above
Indolebutyric acid (IBA) is commonly used to:
control insects
control diseases
raise soil pH
promote rooting of cuttings
When taking stem cuttings, it is paramount to include the node. What is a node?
A growing point
An underground stem specialized in storing food.
The plant part that contains the above ground physical properties.
A horizontal stem that grows underground.
Bulbs and corms reproduce by a process known as ___________________.
Air Layering
Separation
Grafting
Budding
The main difference between separation and division is that ________________________________.
Separation is a natural method of propagation; in division, plants must be cut apart.
Division is a natural method of propagation; in separation, plants must be cut apart.
Separation is done in the spring of the year; division is done in the fall.
There is no real difference.
While auxins / rooting compounds promote rooting, in excess they can lead to ____________________________.
Root initiation
Formation of roots
Yellowing and dropping of leaves
All of the above
Rooting compounds are typically applied to cuttings to promote rooting. Which class of hormones do most commercially available rooting compounds belong to?
Auxins
Gibberellins
Cytokinins
Abscisic Acid
High ___________________ is crucial to prevent water loss and promote rooting of cuttings.
Light intensity
Humidity
Heat
Ventilation
What types of roots form on nodes from cuttings?
Horizontal
Adventitious
Fibrous
Perennial
Which type of cutting does NOT require a humidity dome in the beginning of propagation to reduce water loss?
Hardwood
Semi - hardwood
Softwood
Herbaceous
When are hardwood cuttings taken?
March
Summer
August
Winter ---- on mature, dormant wood
When are semi - hardwood cuttings taken?
Spring ---- on new early growth
Summer
December
Winter ---- on mature, dormant wood
What are the FOUR types of cuttings?
Softwood, Oak, Pinus, and Herbaceous
Adventitious, Mesophyllic, Hardwood, and Semi - Hardwood
Herbaceous, Softwood, Semi - Hardwood, Hardwood
Semi - Hardwood, Division, Rhizomatic, and Hardwood
Which of the following best describes asexual plant propagation?
A form of plant reproduction that involves the fertilization of flower parts that results in the production of fruit / seed.
A form of plant reproduction that bypasses the seed cycle and instead uses vegetative plant parts to produce new plants.
A form of plant reproduction that forms involves seeds, high humidity, and light.
All of the above
When are herbaceous cutting typically taken?
Spring
Summer
Fall
All of the above
