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The base of the leaf may be cordate or heart-shaped when the outline of its rounded base is tErned in forming a sinus where the petiole is attached; auricled or eared, when with a pair of small projections at the base; sagitate or arrow-shaped when the ears or lobes are acute and turned downwards; hastate when the acute basal lobes point outwards and oblique or inequilateral when the two sides of the base are unequal or not at the same level A peltate or skield-shaped leaf has the petiole attached to the lower surface and towards the center of the blade some distance from the base, the ribs or veins of the leaf radiating from the point of insertion, the leaf appearing somewhat like an umbrella.

The base of the leaf may be cordate or heart-shaped when the outline of its rounded base is tErned in forming a sinus where the petiole is attached; auricled or eared, when with a pair of small projections at the base; sagitate or arrow-shaped when the ears or lobes are acute and turned downwards; hastate when the acute basal lobes point outwards and oblique or inequilateral when the two sides of the base are unequal or not at the same level A peltate or skield-shaped leaf has the petiole attached to the lower surface and towards the center of the blade some distance from the base, the ribs or veins of the leaf radiating from the point of insertion, the leaf appearing somewhat like an umbrella.

Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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According to the text, What is the leaf base are in these figures?

The base of the leaf may be cordate or heart-shaped when the outline of its rounded base is tErned in forming a sinus where the petiole is attached; auricled or eared, when with a pair of small projections at the base; sagitate or arrow-shaped when the ears or lobes are acute and turned downwards; hastate when the acute basal lobes point outwards and oblique or inequilateral when the two sides of the base are unequal or not at the same level A peltate or skield-shaped leaf has the petiole attached to the lower surface and towards the center of the blade some distance from the base, the ribs or veins of the leaf radiating from the point of insertion, the leaf appearing somewhat like an umbrella.
Transcribed Image Text:The base of the leaf may be cordate or heart-shaped when the outline of its rounded base is tErned in forming a sinus where the petiole is attached; auricled or eared, when with a pair of small projections at the base; sagitate or arrow-shaped when the ears or lobes are acute and turned downwards; hastate when the acute basal lobes point outwards and oblique or inequilateral when the two sides of the base are unequal or not at the same level A peltate or skield-shaped leaf has the petiole attached to the lower surface and towards the center of the blade some distance from the base, the ribs or veins of the leaf radiating from the point of insertion, the leaf appearing somewhat like an umbrella.
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