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When leaf lamina is incised and incisions do not touch midrib, it is known as
1. Simple leaf.
2. Half compound leaf
3. Pinnately compound leaves.
4 Palmately compound leaf

Last updated date: 13th Jul 2024
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Hint: leaves that are never divided into leaflets or there is no division in the lamina so only a single lamina is present and the leaf blade does not reach the midrib which is directly attached to the stem.

Complete answer:-
To solve this question you must know all about the morphology of the leaf.
All trees, whether grown ornamental or in the wild, have a leaf structure that can be classified as either a simple and compound leaf.
Simple leaf is a single leaf that is never divided into smaller leaflet units so a simple leaf has a single lamina (leaf blade) and the incision of the leaf blade does not reach the midrib or the petiole directly attached to the stem.
Compound leaves are those in which the leaf blade or lamina is divided into a number of segments or leaflets because the incision of leaf blade reaches the midrib.
Pinnately compound leaf is divided into smaller leaflets and leaflets are present laterally on a common axis called rachis, which represents the midrib of the leaf.
Palmate compound leaf is a type of compound leaves attached to the common point, i.e. the tip of the petiole, like the finger of the palm.

Thus the correct answer is (1) simple leaf because only the lamina of a simple leaf does not touch the midrib .

Note :-
The blades of a simple leaf are completely undivided, simple leaves have more surface area for absorbing sunlight, so sunlight can get to the chloroplasts in the cells to help in the regulation of carbon dioxide, oxygen and water vapour exchange with the atmosphere. Examples of simple leaves are pear, Hibiscus, mango, orange, guava etc.