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Parts of Plants

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by

Kevin Nguyen

on 12 December 2013

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Transcript of Parts of Plants

Leaf Divisions
Simple- Not divided into parts (leaflets)
Pinnate- Resembles a feather, with leaflets on each side of an axis
Bipinnate- Leaf with pinnate leaflets, like ferns, which are divided further into pinnates
Tripinnate- Leaf divided into smaller pinnae which is subdivided into smaller leaflets or lobes
Palmate- Resembles an open hand, with lobes coming out of a common point
Bipalmate- Palmately branched with the branches palmated once more
Biternate- having leaflets or other parts that are subdivided into a ternate arrangement
Unifoliolate- single leaflet with a basal joint
Trifoliate- divided into 3 leaflets
Parts of Plants
Complete Flower- has sepal, petal, stamen, and pistil
Incomplete Flower- missing sepal, petal, stamen, or pistil
Leaves
Stems
Functions:
Contains vascular tissue that transports water, food, and nutrients
Helps support leaves and flowers

Roots
Function:
Anchors plant
Stores food
Takes in Water and Nutrients
Examples
2 Types of Roots:
Tap root- Root that grows deeply into the ground; Can better anchor; Obtain water better
Ex: Carrot
Fibrous root- Many roots that spread shallowly on the ground surface; Susceptible to drought
Ex: Grass
2 Types:
Woody- Made of cells with thick cell walls that support the body
Ex: Dichotomous Trees
Herbaceous- Smoother, more flexible
Ex: Flowers
Leaf Margins
Smooth- smooth, non-serrated, all around
Serrate (saw-toothed)- sharp, "saw-like" teeth around edges
Double serrate- with large and small serrations
Spinose- teeth point-tiped
Lobed- deep, rounded edges
Leaf Arrangements
Opposite- pair of leaves are attached at a node
Alternate- single leaf is attached at a node
Whorled- 3 or more leaves are attached at a node
Unifoliolate example
Biternate
Simple
Serrated
Spinose
Lobed
Flower
Complete Flower
China Rose
Incomplete Flower
Rue Anemone
Photoperiodism
Short-day plant
: Plant needing less than 12 hours of daylight in order for flowering
Long-day plant
: Plant needing a minimum amount of hours of sunlight to flower
Day-neutral plant
: Plant that flowers regardless of day length
Short-day
Long-day
Day-neutral
Ponsettia
Spinach
Cotton
Tripinnate
Bipalmate
Full transcript