Free Printable MG03 Plant Propagation

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MG03 Plant Propagation

Total questions: 20

Worksheet time: 10mins

Name

Class

Date

Which of the following plant parts is not used in asexual propagation?

stems

roots

leaves

seeds

Hybrid plants are:

more prone to disease than open pollinated varieties

genetically diverse

more productive than open-pollinated varieties

true-to-type when grown from seed

When storing seeds, it is important to:

keep seeds in a cool, dry place

maintain temperatures at 70°F

provide humidity above 50°F

place seeds in a plastic zip-lock bag

The process of breaking, scratching, or softening the seed coat so that water can enter and initiate germination is called:

initiation

scarification

forcing

sprouting

Seed starting media:

should contain freshly dug garden soil for proper nutrition

must not be allowed to dry out once germination begins

should have fertility levels

should be tightly packed arounds seeds to force out any air

What is the process used to break dormancy that involves placing seeds in a container with moist perlite and refrigerating it for 10-12 weeks?

hardening

scarification

pre-germination

stratification

Medium sized seeds are best sown:

on the surface of the medium

in rows

at a depth three times the diameter of the seed

by broadcasting

The ideal time to transplant seedlings to cell packs or other containers is when the:

seeds germinate

first true leaves appear

seedlings have 6-8 leaves

seedlings get tall and leggy

Hardening can be accomplished by all of the following except:

lowering temperatures

decreasing relative humidity

giving less water

applying half-strength, high nitrogen fertilizer

10.

Stem cuttings taken in fall or early winter when the plant is dormant are called:

softwood

hardwood

herbaceous

semi-hardwood

11.

Root cuttings are usually taken in 2-3 year old plants:

during the summer when they are in full leaf

during the dormant season when they have a large carbohydrate supply

after flowering

in the spring as leaves are emerging

12.

The method of plant propagation that involves bending an attached stem of a parent plant to the ground and covering part of it with soil to encourage rooting is called:

simple layering

stem cutting

bark grafting

tissue culture

13.

Removing the entire basal plate of a true bulb in order to encourage the formation of offsets is called:

scooping

separation

scoring

scaling

14.

Crocus and gladiolus are propagated from:

rhiomes

stolons

corms

tubers

15.

Dahlias are best propagated by:

cutting the tuber into sections with at least one eye

separating cormels from the old corm

cutting the crown of the tuberous root into pieces so that each contains a shoot bud

cutting the rhizome into sections with each pieace containing one bud

16.

In grafting, the scion is the:

tool used to cut plants apart

term used to describe the dried wax surrounding a graft

underground portion of a grafted plant

shoot with dormant buds that is grafted onto a rootstock

17.

The necessary conditions for a successful graft include all of the following except

the scion and rootstock must be compatible

the cambial layer of the scion and the rootstock must meet

the graft union must remain dry until the wound has healed

the scion and the rootstock must eachbe at the proper physiological stage

18.

Whip or tongue grafting is generally used:

to change the cultivar of a young tree

on large tree limbs

for plant material that is 1/4 to 1/2 inch in diameter

on herbaceous plants

19.

Fern spores that are clustered in small dors or stripes on the undersurfaces of the frond are called :

sori

pinnae

indusia

prothalli

20.

Orchids and other plants that are difficult to propagate are commonly grown by:

budding

layering

seed propagation

tissue culture

100 %

MG03 Plant Propagation

Total questions: 20

Worksheet time: 10mins

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