Голосеменные

2. Зарисовать и подписать стадии мегаспорогенеза и мегаметпгенеза

3. Зарисовать и подписать стадии микроспорогенеза и микрогаметпгенеза

4. Зарисовать цикл развития сосны в целом, подписать стадии спорофита и гаметофита.

Cycad diversity (Zamiaceae)
A. Macrozamia moorei
B. Bowenia spectabilis
C. Lepidozamia peroffskyana
D. Stangeria eriopus
E. Encephalar-tos ebomboens

Ginkgophyta— Ginkgo
Female
Male

Ginkgo biloba. A,B. Vegetative growth. Note fan-shaped leaves, clustered into short shoots. C. Leaf close-up, showing dichotomous venation. D. Male tree bearing male cones. E. Male cone. F,G. Close-up of male sporangia, born in pairs on stalk arising from central axis of male cone. H. Female plant bearing stalk with pair of ovules. I. Close-up of ovule pair. Note pollination droplet from micropyle.

Conifers diversity

In some conifers the leaves are clustered into short shoots, in which adjacent internodes are very short in length.

Male and female cones of pine

A. Shoot with young fascicles.
B. Branch, showing scale leaves and fascicles.
C. Apex of branch with fascicles and male cones.
D. Male cones, close-up.
E. Male sporophylls of male cones, each with two male sporangia.
F. Male strobilus, longitudinal section, showing microspo-rangia and subtending micro-sporophylls.
G. Close-up of microsporan-gium, full of mature pollen grains.

Cordaits
Araucaria
Pine

A. Young female cone, at time of pollination.
B. Close-up, showing ovuliferous scales and bracts. Note pollen grains.
C. One-year-old female cone.
D. Pinus coulteri, coulter pine, mature female cone (most massive of any species).
E. Female pine cones, right in section.
F. Close-up of longitudinal section, showing bract and ovuliferous scale.
G. Pseutotsuga sp. female cone. Note elongate bracts and wide ovuliferous scales.
H. Immature ovuliferous scale, top view, showing two winged seeds.
I. Pinus, mature winged seed.

ATHROTAXIS and CUNNINGHAMIA has prevailing bracts in cones. Ovuliferous scales are reduced very much.
ATHROTAXIS

CUNNINGHAMIA

Araucariaceae

Cupressaceae

Podocarpaceae

Taxaceae
Taxus baccata

Pinaceae

Gnetales:
Gnetaceae
Welwitschiaceae
Ephedraceae
Ephedra

Gnetales
Ephedra

Gnetaceae

Welwitschiaceae,
Welwitschia mirabilis

Bennettitales