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Plant Responses to Internal and External Signals
Plant Responses to Internal and External Signals

... S 1. Reception: a signal binds to a receptor S 2. Transduction: The signal is relayed through the cell/body S 3. Response: Activation of cellular responses ...
Xerophytes and Hydrophytes
Xerophytes and Hydrophytes

... Significance: peripheral ‘cylinder’ of vascular bundles found in terrestrial plants gives strength/rigidity to stems which is not needed (in an aquatic environment); holds flowers above water allowing pollination/seed ...
Temperate Forest - Middletown Public Schools
Temperate Forest - Middletown Public Schools

... Differences between Spring and Winter ...
Rhododendron Rhododendron Common name Rhododendron
Rhododendron Rhododendron Common name Rhododendron

... ...
NARDIA HIROSHII AMAKAWA – A NEW SPECIES FOR NORTH
NARDIA HIROSHII AMAKAWA – A NEW SPECIES FOR NORTH

... in the alpine region” (Amakawa, 1959: 285). In Honshu, it is recorded up to 2400 m elev., in the colder Kurils it occurs from 60 to 1460 m elev. Nardia hiroshii prefers in general subalpine and alpine vegetation types, as well as lowered variants of tundroid communities (as a result of thermal inver ...
Chapter 31
Chapter 31

... --absorbs and transports minerals & water through root hairs-tiny projection or outgrowth of an epidermal cell,…it increases the amount of surface area --stores food ...
Bismarckia nobilis (Bismarck Palm) Size/Shape
Bismarckia nobilis (Bismarck Palm) Size/Shape

... Bismarckia nobilis (Bismarck Palm) Bismarck Palm slowly reaches 35-40 m or more in height and is topped with gorgeous 80 cm wide, stiff, waxy, blue/gray leaves. These palms cannot be missed in the landscape due to the very striking frond color and texture. The flower stalks are also 80 long and prod ...
The_Flowers_Of_TC.ppt
The_Flowers_Of_TC.ppt

... a pale green stem with spreading branches and is found world wide. All parts of Jimsonweed are poisonous, having a strong odor and unpleasant taste. In small quantities, it can have medicinal or hallucinogenic effects, but also can easily poison with misuse. A well known mass poisoning of soldiers o ...
Eichhornia crassipes
Eichhornia crassipes

... Botanical Description: Floating aquatic herb, rooting in mud if stranded, usually in dense mats with new plantlets attached on floating green stolons. Submersed roots blueblack to dark purple, feathery, dense near root crown, tips with long dark root caps. Leaves formed in rosettes; petioles to 30 c ...
Ligularia stenocephala "Little Rocket
Ligularia stenocephala "Little Rocket

... let us know if this is not the case. Please remove protective plastic bag as soon as possible and keep well watered until ready for planting. This plant is a shorter form than the species and has handsome indented heart shaped leaves from which arise spires of yellow flowers prefers semi shaded posi ...
sexual reproduction in flowering plants
sexual reproduction in flowering plants

... Sexual reproduction in flowering plants What you must be able to do: You need to be able to name all the parts of a flower (find different pictures of flowers on the internet to practice). You need to be able to label all the parts of a seed / bean What develops from the ovule, ovary and egg cell ...
Underground Stem Modifications
Underground Stem Modifications

... Tendrils develop as modifications of the stem in certain plants. The terminal bud gives rise to a tendril in Cissus quandrangularis and the axillary bud becomes modified into a tendirl in Passion fruit. ...
Grade 7-Chapter 9
Grade 7-Chapter 9

...  Do not have flowers or cones  Reproduce by spores- waterproof reproductive cell ...
No Slide Title - MrNoviasA-maze
No Slide Title - MrNoviasA-maze

... This is the time of day when a plant can not produce more sugar (food) and must use its stored sugar for energy. ...
Unit 13 Plants (Teacher) PPT
Unit 13 Plants (Teacher) PPT

... Cohesion-Tension Theory (most water movement) -transpiration (negative pressure/ tension in leaves) -cohesion (hydrogen bonds between water) -bulk flow (evaporation from leaf pulls the column) ...
Lecture2
Lecture2

... leaflets directly attached to the end of the petiole e.g. Centrosema pubescense or’ pinnately’ Compound when the petiole extends into a long slender structure with leaflets e.g. Clitoria ternatea. Some have leaflets modified to tendrils e.g. Lathyrus spp. Presence of pulvinus is the characteristic f ...
Parts of a Plant - The Lesson Locker
Parts of a Plant - The Lesson Locker

... active transport Water enters the phloem through osmosis increasing the pressure in the phloem tube. This pressure pushes the sugar through the phloem ...
Flora in National Park of Appennino Tosco-Emiliano
Flora in National Park of Appennino Tosco-Emiliano

... Large coniferous tree growing to 30m, called 'the prince of trees'. - Evergreen monoecious tree with separated unisexual flowers. - Branches are dense, regulalarly distributed along the bole. - Bark is smooth in young trees; scaly with resin blisters in mature trees. - Leaves are needle-like, flatte ...
Examining Plant Structures and Functions
Examining Plant Structures and Functions

...  The major vegetative parts of plants are stems, leaves, and roots.  The major reproductive parts of plants are flowers, seed, and fruit. ...
Presentation
Presentation

... Modified leaves – spines on cacti tendrils of peas and squash modified leaves bulbs of onions and tulips are modified leaves carnivorous plants – pitcher have modified leaves ...
Understanding Our Environment
Understanding Our Environment

... Floral Leaves (bracts) • At bases of flowers or flower stalks • Poinsettia - Flowers do not have petals, instead ...
31. Rue Anemone - Friess Lake School District
31. Rue Anemone - Friess Lake School District

... The one to two inch flowers on this plant are usually white or pink. The center is yellow, white, and green. Two to three flowers form at the top of each stalk and arise from the center of the whorl of leaves. The flowering period is from March through June. The six petals on each flower are really ...
vascular seed plants
vascular seed plants

... • Function in nutrient transport, leaf production & facilitating the acquisition of sunlight for leaves. • Nodes: Point of leaf attachment • Internodes: Area in between two nodes ...
Classifying Plants
Classifying Plants

... of the cortex are parenchyma. Cortical cells are photosynthetic in plants and often store starch. In dicots, the ground tissue with the parenchyma cells in the center of the stem is specialized for storage and is called pith. Pith cells are often lignified, arranged loosely, and the pith may ...
Plant Reproduction
Plant Reproduction

... 3. Production of plant clones by placing plant tissue on culture medium 4. Specialized leaves that form on the swollen tip of the floral branch 7. Green, dominant stage in moss plant’s life cycle 10. Female reproductive structure in plants that makes eggs 14. Whorl made up of the male reproductive s ...
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Leaf



A leaf is an organ of a vascular plant and is the principal lateral appendage of the stem. The leaves and stem together form the shoot. Foliage is a mass noun that refers to leaves collectively.Typically a leaf is a thin, dorsiventrally flattened organ, borne above ground and specialized for photosynthesis. Most leaves have distinctive upper (adaxial) and lower (abaxial) surfaces that differ in colour, hairiness, the number of stomata (pores that intake and output gases) and other features. In most plant species, leaves are broad and flat. Such species are referred to as broad-leaved plants. Many gymnosperm species have thin needle-like leaves that can be advantageous in cold climates frequented by snow and frost. Leaves can also have other shapes and forms such as the scales in certain species of conifers. Some leaves are not above ground (such as bulb scales). Succulent plants often have thick juicy leaves, but some leaves are without major photosynthetic function and may be dead at maturity, as in some cataphylls, and spines). Furthermore, several kinds of leaf-like structures found in vascular plants are not totally homologous with them. Examples include flattened plant stems (called phylloclades and cladodes), and phyllodes (flattened leaf stems), both of which differ from leaves in their structure and origin. Many structures of non-vascular plants, and even of some lichens, which are not plants at all (in the sense of being members of the kingdom Plantae), look and function much like leaves. The primary site of photosynthesis in most leaves (palisade mesophyll) almost always occurs on the upper side of the blade or lamina of the leaf but in some species, including the mature foliage of Eucalyptus palisade occurs on both sides and the leaves are said to be isobilateral.
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