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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Question
What is the type of compound leaves in these figures?
Transcribed Image Text:There are two principal kinds of compound leaves, corresponding to the principal kinds of
division in simple leaves, pinnately compound and palmately compound Pinnate compound leaves
are those where the leaflets are attached along the sides of a main stalk or rachis, the leaflets
corresponding to the lobes of a simple, pinnately lobed leaf. When there is an odd or end leflet, such
kaves are termed odd-pinnate, uneven pinnate, or imparipinnate and when there is no odd terminal
leaflet they are called evenly or abruptly pinnate. Simple pinnate compound leaves are those with a
double row of leaflets along an unbranched rachis; bipinnate or twice pinnate or 2-pinnate leaves are
those where the rachis bears branches, the branches bearing the leaflets in which cases the branches
ae termed pinnae; the division may be carried still further and we may have 3- or tripinnate, 4- or
quadripinnate or pinnately decompounds leaves, etc.
A simple palmate compound leaf have the leaflets attached to the tip of the petiole and when
there are only three leaflets, the leaf is called a ternate leaf. The division may be carried further in
twice palmate or when the division is in three's, twice ternate or biternate; if the division goes still
firther the leaf is called palmately decompound.
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