Growing Plants

Page
5

Slide 43

tapioca root

Topinambour

Notes: Water chestnuts are delightfully sweet and crisp- if you buy them fresh. You need to peel off their brown jackets and simmer them for five minutes before stir-frying.

Tinned Water chestnuts are easily available but not nearly as good. If you use them, blanch them first in boiling water for thirty seconds.

Topinambour

Water chestnut

Chinese water chestnut

Slide 44

Bulbs

Bulbs are also underground food stores which work in the same way as tubers.

The difference is that bulbs have thick fleshy ‘leaves’.

Slide 45

Examples: snowdrop, crocus, daffodil, iris, lily, hyacinths, amaryllis, onion, garlic.

Slide 46

3. Dec. - Jan.Cooling Period Rest period. In order for bulbs to bloom in the spring they need weeks of at least 5oC. Frost at this time doesn’t harm them.

Slide 47

Runners

Runners are side shoots which grow out from the parent plant.

Buds form at points along the runner and eventually these buds form roots and grow into new plants.

Examples: spider plant (Anthericum), strawberry (Fragaria x ananassa)

Slide 48

Flame violet

(Episcia reptans)

Collect Information Card

“Asexual Reproduction”

Take short notes from it.

Slide 49

Activity

World of plants workbook

Read p20

“Advantages of asexual reproduction”

Read p32 & 33.

Copy and complete the table.

Summarising advantages & disadvantages of sexual versus asexual reproduction

Slide 50

Reproduction- advantages

Slide 51

Clones

A clone is the name given to the genetically identical plants produced from a single parent plant.

They are formed during asexual reproduction only.

Slide 52

Artificial Propagation

People can make use of plants’ ability to reproduce asexually (instead of using seeds) by using methods of artificial propagation such as:

- Cuttings

- Graftings

Again this produces genetically identical offspring (clones).

Slide 53