Search results
Results from the WOW.Com Content Network
Plants that produce sporophylls include: Alaria esculenta, a brown alga which shows sporophylls attached near the base of the alga. [1] Lycophytes, where sporophylls may be aggregated into strobili (Selaginella and some Lycopodium and related genera) or distributed singly among sterile leaves . Sporangia are borne in the axil or on the adaxial ...
A strobilus (pl.: strobili) is a structure present on many land plant species consisting of sporangia-bearing structures densely aggregated along a stem.Strobili are often called cones, but some botanists restrict the use of the term cone to the woody seed strobili of conifers.
Diagram of flower parts. In botany, floral morphology is the study of the diversity of forms and structures presented by the flower, which, by definition, is a branch of limited growth that bears the modified leaves responsible for reproduction and protection of the gametes, called floral pieces.
Diagram showing the alternation of generations between a diploid sporophyte (bottom) and a haploid gametophyte (top) A sporophyte (/ ˈ s p ɔːr. ə ˌ f aɪ t /) is the diploid multicellular stage in the life cycle of a plant or alga which produces asexual spores.
The kidney-shaped (reniform) spore-cases contain spores of one kind only, (isosporous, homosporous), and are borne on the upper surface of the leaf blade of specialized leaves (sporophylls) arranged in a cone-like strobilus at the end of upright stems. [6] Each sporangium contains numerous small spores. [7]
The stipe may bear several sporophylls which are club-shaped and up to 20 cm long and 5 cm broad which bear the spores. It grows from a short cylindrical stipe attached to the rocks by a holdfast of branching root-like rhizoids and grows to about 20 cm long. The stipe is continued into the frond forming a long conspicuous midrib, all other ...
Leaves that bear sporangia are called sporophylls. If the plant is heterosporous, the sporangia-bearing leaves are distinguished as either microsporophylls or megasporophylls. In seed plants, sporangia are typically located within strobili or flowers. Clusters of sporangia on a fern
The leaves are 3–5 mm long and 0.7–1 mm broad, tapered to a fine hair-like white point. The branches bearing strobili or spore cones turn erect, reaching 5–15 cm (2.0–5.9 in) above ground, and their leaves are modified as sporophylls that enclose the spore capsules or sporangia. The spore cones are yellow-green, 2–3 cm (0.79–1.18 in ...