Study Set Content:
localized regions for plant growth
meristems and cambia
the most important ultimate source of food for birds and mammals, including humans.
angiosperms
the most economically important group of green plants, serving as a source of pharmaceuticals, fibre products, timber, ornamentals and other commercial products
flowering plants
less than 2 millimetres (0.08 inch)
watermea
watermeal
Wolffia; family: Araceae
about 100 metres (330 feet).
Australia's mountain ash tree
Australia's mountain ash tree
Eucalyptus regnas; family: Myrtaceae
The basic angiosperm form is
woody or herbaceous
s (generally trees and shrubs) are rich in secondary tissues
Woody forms
(herbs) rarely have any secondary tissues
herbaceous forms
are herbs that complete their growing cycle (growth, flowering, and death) within the same season
Annuals
beans
(Phaseolus genera; Fabaceae)
corn
maize, Zea mays, Poaceae
squashes
Cucurbita; Cucurbitaceae
poppies
(Papaver and other genera; Papaveraceae)
Buttercup
Ranunculus; Ranunculaceae
are also herbs, but, unlike annuals, their growing cycle spans two years; the vegetative (nonreproductive) plant growth takes place from seed during the first year, and flowers and fruit develop during the second.
Biennials
beet
Beta vulgaris; Amaranthaceae)
carrot
(Daucus carota, Apiaceae)
grows for many years and often flowers annually
perennial
