Study Set Content:
Before pollination (blank)produce a small tubular extension resembling the neck of a miniature bottle extending into the ai
Ephedra
Most of the remaining species in the division Gnetophyta are in the genus
Gnetum
Its members occur in the tropics of South America, Africa, and Southeast Asia. Most are vinelike, with broad leaves similar to those of flowering plants
Gnetum
division Gnetophyta the third genus has only one species
Welwitschia
confined to the temperate Namib and Mossamedes deserts of southwestern Africa
Welwitschia
What kind of photosynthesis does welwitschia do
CAM photosynthesis
Welwitschia plants usually produce only how many leaves
two leaves
is dioecious, with both male and female strobili being produced on axes that emerge from the axils of the leaves
Welwitschia
house the male and female flowers on different plants
dioecious
were used as masts for sailing vessels and for crates, furniture, flooring, paneling, and matchsticks. Western white pine is the source of most such lumber today
Eastern white pine stems
used as a solvent
Turpentine
is used by musicians and by baseball players
Rosin
Resin from pines consists of
turpentine and rosin
from kauri pines is used in colorless varnishes
Dammar
is fossilized resin
Amber
is also used in floor waxes, printer’s ink, paper coatings, perfumes, and the manufacture of menthol.
resin
is the chief source of newsprint
White spruce
was used for a type of chewing gum
. Spruce resin
are used for fence posts
Larch and juniper
are used in the construction, paper, ornament, and Christmas-tree industries
firs
