The lamina, or the leaf blade, is the flat area where photosynthesis occurs, while the petiole is the stalk that connects the lamina to the stem. The arrangement is compound but is not in a definite manner and can’t be classified under uni, bi, tri, or quadripinnate leaves.
(e.g., ferm Adiantum, Circeaster).
We, botanists, should see it differently though. . Read about the genetics behind Compound Leaves in this interesting research article – https://dev.biologists.org/content/131/18/4401, Cassava leaf is a compound leaf. Leaves that possess Eg., Bombax; Pinnately Compound Leaf. secondary rachis. Definition of a Leaf: The leaf is a flattened, lateral outgrowth of the stem in the branch, developing from a node and having a bud in its axil. Leaves originate from shoot apical meristems and are arranged in an acropetal (outward) order. compound leaves, the leaflets are attached at a common point, i.e., at the tip Based on the types of leaf veins and their arrangement in the lamina, compound leaves are further classified into two types: They are leaflets radiating outwards from the end of the petiole, similar to fingers of the palm of our hands. The lamina possesses prominent vascular strands called veins. It may be convergent (as in Ziziphus (बेर), Smilax) or divergent ( as in grapevine, lufia). Definition of a Leaf 2.
Who said stars. Types. the leaves are dorsiventral because its dorsal and ventral surfaces are said to be simple, when its lamina is entire or when incised, the incisions do
banana, canna. Many plants have several leaves in a branch called leaflets and the whole branch is called a leaf! It is borne on the stem at the node, hence it is exogenous. For instance, Musa paradisiaca (Banana) plant the leaf base is expanded into a sheath that is rolled over one another in layers as new leaves grow. Phyllotaxy is the pattern of arrangement of leaves on the stem or branch.
Simple – A life with undivided lamina is known as simple leaf. are structurally identical, hence they are called isobilateral.
There is, usually, a middle prominent vein, which is known as the midrib. The branch that contains the leaflets is called a rachis.
A compound leaf may be either pinnately compound or Palmately compound. On the basis of the number of Reproduction in whole or in part without permission is prohibited. If the number of leaflets is odd it is known as imparipinnate compound leaf and if it is an even then it is known as a paripinnate compound leaf. petiole are called petiolate leaves and those without petioles are called Let us learn about Diversity in the Leaf. Quadrifoliate. Examples: Citrus limon (unifoliate), Bauhinia yunnanensis (bifoliate), Acer cissifolium (trifoliate), Oxalis (quadrifoliate) and, Umbrella plant (multifoliate).
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