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🌿5 Biology > 🟢40 Vegetative Propogation > Flashcards

🟢40 Vegetative Propogation Flashcards

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1
Q

Explain what is meant by vegetative proppgation

A

Asexual reproduction in plants that results in genetically identical offspring

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2
Q

Explain what is meant by Asexual reproduction

A

Reproduction with only one parent cell
All offspring are genetically identical
Doesnt involve union of sex cells
Egs: Binary Fission
Spore formation
Budding

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3
Q

What is natural vegetative propogation

A

Forming new plants from a stem,root,bud, or leaf

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4
Q

Name the type of cell division involved in vegetative reproduction

A

Mitosis

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5
Q

Give three examples of natural vegetative propogation

A

Strawberrie runners (stem)
Sweet potato root tuber (root)
Cactus (leaf)
Onion bulb (buds)

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6
Q

Suggest one advantage and one disadvantage of artificial propogation

A

Advantage:
Can take desired traits from 2 plants and produce one plant.
Fast

Disadvantage:
Diseases can be passed from parent to offspring
Plants may lack vigour if carfied out repeatedly

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7
Q

Define runners

A

Horizontal stems that run above ground and from which new plants grow
Long internodes where buds are formed. New plant grows from buds
Strawberries Buttercup

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8
Q

Define Root Tuber

A

Swollen underground root that remains dormant during winter and from which new plants grow
New shoots grow from buds at base of old stem which has withered away
Dahlia sweet potato yam

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9
Q

Define natural vegetative propogation from leafs

A

Leaves of some plants will grow into new plants if theyre detached from parent plant and land in soil
Cactus

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10
Q

What is a BULB

A

modified bud

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11
Q

Define natural vsegetative propogation of buds

A

Bulb contains underground stem thats small. Leaves are attached, swollen with stored food.Centre of bulb has apical bud which can produce leaves nd young flower. Lateral buds located between stem and each leaf. These can form new shoots in spring. Old leaves then become dry nd scaly nd protect nee bulb inside
Daffodil Onion Tulip

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12
Q

What is a cutting

A

portion of a plant thats removed from parent plant and grown into a new independent plant

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13
Q

How can u speed up formation of artificial vegetative propogation method: cuttings

A

Cut the shoot at an angle and treat with rooting powder

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14
Q

How does artificial vegetative propogation CUTTING happen

A

Cut a shoot of a plant at an angle from aprent plant
Treat with rootimg powder
Place in soil
Cheap and simple
Busy Lizzie, Willow Geranium

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15
Q

What is graftting

A

The joining and uniting of part of one plant with a second plant

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16
Q

Examples of reasons for graftting

A

Take the large flowers from roses and graft with the large roots from wild roses
Well rooted plants with big flowers

17
Q

How does artificial vegetative propogation GRAFTING occur

A

Remove part of onne plant and attach it to a healthy rooted part of a second plant
Must be good contact between meristems and vascular tissue of both plants

18
Q

What is Layering

A

The growth of a new plant from a stem that is still attached to the parent plant

19
Q

How does artificial vegetative propogation LAYERING occur

A

Branch of a parent plant is bent down
Covered in soil except roots
Peg to hold in place
Two plants will separate
Blackberries

20
Q

What is micropropogation

A

the growth of plants from small pieces of tissue under sterile conditions on a specially selected medium

21
Q

What is another name for micropropogation

A

Tissue culturing

22
Q

When is micropropagation usually used and why

A

Often used to produce large numbers of newly developed plants
or
plants that dont reproduce from seeds
As its very expensive and specialised

23
Q

Advantages of Vegetative Propogation

A

Simple and reliable
New plants form fast
Offspring are identical to parent
No waste

24
Q

Disadvantages of vegetative propogation

A

Lack of variation
diseases can be passed from parent to offspring
Plants may lack vigour if carried out repeatedly
Could be overcrowding and competition

25
Q

Secual Plant reproduction advantages

A

Offspring show variation(=evolution)
Some r resistant to disease
Less competition due to seed dispersal
Some seefs may remain dormant

26
Q

Disadvantages of sexual reproduction in plants

A

Complex process
May depend on outside agents (for pollination and dispersal)
Slow growth
Wasteful (nectar pollen petals fruit)

🌿5 Biology (29 decks)

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