morphological description of Vitaceae Description? How are the leaves arranged? What is the shape of the...

morphological description of Vitaceae Description?

How are the leaves arranged?

What is the shape of the leaf?

Leaf type? pinnately compound. palmately compound or simple

What other leaf characteristics are important? leaf margins Is the leaf is petiolate, sessile, or clasping?

Inflorescence type ? spike raceme panicle corymb umbel helicoid cyme

Reproduction? Any information ?

synapomorphies of this plant family are?

Solutions

Expert Solution

The Vitaceae are a family of dicotyledonousflowering plants, with 14 genera and ca 910 known species,including the grapevine and Virginia creeper. The family name is derived from the genus Vitis.

****The roots form the plant–soil interface, while the trunk, cordons, and shoots of a vine form its stem. The shoots carry the leaves, buds, tendrils, and clusters. Leaves are arranged in spiral phyllotaxy in juvenile vines and in alternate phyllotaxy in mature vines

**** leaf shape can be quantified using digital approaches which indicate phylogenetic signal

****

Petiolate

Leaf stalk or petiole is present at the leaf angle with stem. Example: Hibiscus rosaninensis, Quercus sps.

Sessile

Leaf is attached to the stem without any petiole. Example: Podocarpus macrophyllus

Peltate

Petiole is present at the bottom surface of the leaf and not at the base or leaf margin. Example: Tropaeolum majus.

Clasping

Partial encircling of leaf around the stem is clasping. Example: Calendula officinalis.

An inflorescence is a group or cluster of flowers arranged on a stem that is composed of a main branch or a complicated arrangement of branches. Morphologically, it is the modified part of the shoot of seed plants where flowers are formed. The modifications can involve the length and the nature of the internodes and the phyllotaxis, as well as variations in the proportions, compressions, swellings, adnations, connations and reduction of main and secondary axes. Inflorescence can also be defined as the reproductive portion of a plant that bears a cluster of flowers in a specific pattern.

gladiator answered 1 year ago

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