What is the leaf apex of acute?
Leaf apex
| Rounded: the leaf apex is broadly rounded or blunt (obtuse). | Acute: the leaf apex ends in a short sharp point. |
|---|---|
| Acuminate: the leaf apex ends in a long drawn out point. | Apiculate/mucronate: the leaf apex ends in a short protruding point. |
What is acute leaf base?
Acute Leaf Base. An angle that is less than 90º with straight lines and is wider than cuneate. It is roughly equivalent to wide cuneate. The term acute is more commonly used for apices.
What is an obtuse apex?
Obtuse Leaf Apex. A leaf apex whose sides form an angle greater than 90º, but not quite as smooth or wide as a rounded leaf apex.
What is called leaf apex?
The green, flat and broad portion of the leaf is called lamina or leaf blade. The tip of the leaf blade is called leaf apex.
What is acute in plants?
Acute [ Botany ] Dictionary of botanic terminology – index of names. Any part of a plant part gradually tapering to a point. Sharply pointed.
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What is lamina and leaf apex?
Apex: The tip of the leaf is known as the apex. Midvein or Primary Vein: The main vascular bundle passing usually through the centre of the leaf is known as the midvein or primary vein. Secondary Vein: These are the extensions of the primary vein in the lamina plant leaf, covering the entire leaf blade.
What is Aristate leaf apex?
Aristate, awn-pointed, and bristle-pointed, are terms used when this mucronate point is extended into a longer bristle-form or other slender appendage. The first six of these terns can be applied to the lower as well as to the upper end of a leaf or otherother organ. The others belong to the apex.
What is Apex in plant?
In botany, apex refers to the highest point or vertex of a plant stem or root. The shoot apex is where fresh stems, leaves, and other parts of a plant grow after the old parts fall off or dry up. In some cases, such as monocot stems, the shoot apex tends to be more elongated.
What is cardiac apex?
The apex beat (lat. ictus cordis), also called the apical impulse, is the pulse felt at the point of maximum impulse (PMI), which is the point on the precordium farthest outwards (laterally) and downwards (inferiorly) from the sternum at which the cardiac impulse can be felt.
What is stem apex?
Shoot apex is the apical part of the stem. It contains multipotent stem cells, which produce leaf primordia and give rise to all the aerial parts of a plant such as leaves, branches, flowers, etc. It possesses apical meristem and continues to grow.
What is called lamina?
Lamina is a general anatomical term meaning “plate” or “layer”. It is used in both gross anatomy and microscopic anatomy to describe structures. Some examples include: The laminae of the thyroid cartilage: two leaf-like plates of cartilage that make up the walls of the structure.
What is margin of lamina?
The margin is the edge of the leaf lamina lying between the apex and base. Entire margins are smooth, without indentations or incisions. Revolute margins are rolled downward, toward the lower surface of the leaf. Involute margins are rolled upward, or toward the upper surface of the leaf.
What is the difference between Apex and apical?
The Apical pulse refers to the cardiac activity felt by palpation over the precordium. Apex beat is the outermost and lowermost point of maximum cardiac activity felt by palpation over the precordium.
What is normal apex beat?
The apex beat is the lowest and outermost point at which the cardiac pulse may be felt; it may be visible in thin subjects. The normal apex is located in the fifth intercostal space, in the midclavicular line.
What causes apex beat?
association with heartbeat …with heartbeat, is called the apex beat. It is caused by pressure exerted on the chest wall at the outset of systole by the rounded and hardened ventricular wall.
What is shoot apex in plants?
The shoot apex is the growing tip of the plant shoot and has a crucial role in morphogenesis: this is where new leaves or flowers emerge and rapidly expand (Fig. 1A, B) (Steeves and Sussex, 1989; Ha et al., 2010). The shoot apex comprises young organ primordia and the shoot apical meristem proper (Fig. 1C).
What is blade leaf?
Definitions of leaf blade. especially a leaf of grass or the broad portion of a leaf as distinct from the petiole. synonyms: blade. type of: foliage, leaf, leafage. the main organ of photosynthesis and transpiration in higher plants.
What is the difference between acute apex and apex of leaf?
Apex of Leaf: i. Acute: Ending into a sharp point in the form of an acute angle, e.g., Mangifera indica. ii. Acuminate: When apex is drawn out in the form of a long slender tail, e.g., Ficus religiosa.
What does acute leaf apices mean?
Acute Leaf Apex. An angle that is less than 90º with straight lines and having a point. The term acute is most often applied to apices, but it is sometimes used for bases where it refers to a wider base than cuneate. Botanical Terminology > Leaf Apices > Acute.
What are the different types of leaf apex shape?
Rounded: the leaf apex is broadly rounded or blunt ( obtuse ). Acute: the leaf apex ends in a short sharp point. Acuminate: the leaf apex ends in a long drawn out point. Apiculate / mucronate: the leaf apex ends in a short protruding point.
What is the meaning of aristate leaf apex?
Aristate leaf apex is the leaf ending in a bristle such spices are seen in leafy bract or glumes of wheat. In wheat the unit inflorescence is surrounded by two leafy glumes, which have aristate apices. Acute apex of China rose leaf. Acuminate leaf apex of peepal leaf. Glumes of wheat bearing aristate apices.