2013年1月12日托福写作真题回忆
... help prevent water loss by reducing air flow close to the cactus and providing some shade. Cactus spines are produced from specialized structures called areoles, a kind of highly reduced branch. Areoles are an identifying feature of cacti. As well as spines, areoles give rise to flowers, which are u ...
... help prevent water loss by reducing air flow close to the cactus and providing some shade. Cactus spines are produced from specialized structures called areoles, a kind of highly reduced branch. Areoles are an identifying feature of cacti. As well as spines, areoles give rise to flowers, which are u ...
Cell Wall to Cell: Microscopic Forensic Botany
... Forensic botany includes a wide variety of subdisciplines, from ecology and limnology to palynology and molecular biology. Plant anatomy is especially pertinent to trace evidence. For our purposes, botanical materials will include any portion of higher and lower plants, algaes (including diatoms), a ...
... Forensic botany includes a wide variety of subdisciplines, from ecology and limnology to palynology and molecular biology. Plant anatomy is especially pertinent to trace evidence. For our purposes, botanical materials will include any portion of higher and lower plants, algaes (including diatoms), a ...
Lecture #7
... • vascular bundles: xylem and phloem cells running up and down the stem parallel to each other – unique arrangement depending on whether the plant is a dicot or a monocot – monocots – bundles are distributed as a complex network throughout the inner part of the stem • frequently described as “scatt ...
... • vascular bundles: xylem and phloem cells running up and down the stem parallel to each other – unique arrangement depending on whether the plant is a dicot or a monocot – monocots – bundles are distributed as a complex network throughout the inner part of the stem • frequently described as “scatt ...
ch 29-30 plant diversity notes-2007
... Adaptations Enabling the Move to Land • In charophyceans a layer of a durable polymer called sporopollenin prevents exposed zygotes from drying out • The accumulation of traits that facilitated survival on land may have opened the way to its colonization by plants ...
... Adaptations Enabling the Move to Land • In charophyceans a layer of a durable polymer called sporopollenin prevents exposed zygotes from drying out • The accumulation of traits that facilitated survival on land may have opened the way to its colonization by plants ...
Plum Delight Chinese Fringeflower
... fragrant hot pink strap-like flowers along the branches in early spring. It has plum purple foliage which emerges coppery-bronze in spring. The oval leaves remain plum purple through the winter. The fruit is not ornamentally significant. The smooth brown bark is not particularly outstanding. Landsca ...
... fragrant hot pink strap-like flowers along the branches in early spring. It has plum purple foliage which emerges coppery-bronze in spring. The oval leaves remain plum purple through the winter. The fruit is not ornamentally significant. The smooth brown bark is not particularly outstanding. Landsca ...
Double Pink Weeping Higan Cherry
... Double Pink Weeping Higan Cherry is blanketed in stunning clusters of fragrant pink flowers along the branches in early spring, which emerge from distinctive rose flower buds before the leaves. It has dark green foliage throughout the season. The pointy leaves turn yellow in fall. The fruits are bla ...
... Double Pink Weeping Higan Cherry is blanketed in stunning clusters of fragrant pink flowers along the branches in early spring, which emerge from distinctive rose flower buds before the leaves. It has dark green foliage throughout the season. The pointy leaves turn yellow in fall. The fruits are bla ...
Preliminary morphological and anatomical study of
... shows a general structure of this plant and its leaf. The leaves are simple, green, and arranged in opposite pairs. They are glabrous with a lanceolate leaf blade and a serrate margin. The leaf apice is acuminate with an acute leaf base. Leaves edges are dentate, and the venation is reticulate-pinna ...
... shows a general structure of this plant and its leaf. The leaves are simple, green, and arranged in opposite pairs. They are glabrous with a lanceolate leaf blade and a serrate margin. The leaf apice is acuminate with an acute leaf base. Leaves edges are dentate, and the venation is reticulate-pinna ...
Distinguish between the four main groups of land plants
... i. Once very diverse; fossil forms to 15 m ii. Reduced to 15 species; now found in swampy areas ii. Green jointed stems with tiny leaves iii. Stem tip cones harbor sporangia c. Pteridophytes i. Ferns, whisk ferns, and horsetails ii. Well-developed roots with lignified vascular tissue iii. Complex me ...
... i. Once very diverse; fossil forms to 15 m ii. Reduced to 15 species; now found in swampy areas ii. Green jointed stems with tiny leaves iii. Stem tip cones harbor sporangia c. Pteridophytes i. Ferns, whisk ferns, and horsetails ii. Well-developed roots with lignified vascular tissue iii. Complex me ...
Level 3 (2013 syllabus revision) plant tissues
... parts of the plant – leaves, stems, roots, flowers, etc. This thin layer of tissue protects the plant from water loss or disease, for example the epidermis of a plant's leaves secretes a coating called the cuticle that helps the plant retain water. It is the equivalent of skin in animals. In woody s ...
... parts of the plant – leaves, stems, roots, flowers, etc. This thin layer of tissue protects the plant from water loss or disease, for example the epidermis of a plant's leaves secretes a coating called the cuticle that helps the plant retain water. It is the equivalent of skin in animals. In woody s ...
BY 124 Worksheet 3 Which of the following adaptations is common
... e. is larger and more conspicuous than the haploid stage 16. Which types of angiosperms would most likely be wind-pollinated rather than animalpollinated? a. maize and wheat b. oak and maple trees c. roses and tiger lilies d. The first and second responses are correct. e. None of the listed response ...
... e. is larger and more conspicuous than the haploid stage 16. Which types of angiosperms would most likely be wind-pollinated rather than animalpollinated? a. maize and wheat b. oak and maple trees c. roses and tiger lilies d. The first and second responses are correct. e. None of the listed response ...
1 National Science Teachers Association Discovering Science
... plants? Discuss responses. See two kinds of root systems here Diagram of root systems. Instruction (I/Teacher’s role) Discuss key content words (plants, root systems, erosion, tap root system, fibrous root system). Plants are living organisms. (Trees, herbs, bushes, grasses, vines, and ferns are p ...
... plants? Discuss responses. See two kinds of root systems here Diagram of root systems. Instruction (I/Teacher’s role) Discuss key content words (plants, root systems, erosion, tap root system, fibrous root system). Plants are living organisms. (Trees, herbs, bushes, grasses, vines, and ferns are p ...
roots lesson plan - NSTA Communities
... plants? Discuss responses. See two kinds of root systems here Diagram of root systems. Instruction (I/Teacher’s role) Discuss key content words (plants, root systems, erosion, tap root system, fibrous root system). Plants are living organisms. (Trees, herbs, bushes, grasses, vines, and ferns are p ...
... plants? Discuss responses. See two kinds of root systems here Diagram of root systems. Instruction (I/Teacher’s role) Discuss key content words (plants, root systems, erosion, tap root system, fibrous root system). Plants are living organisms. (Trees, herbs, bushes, grasses, vines, and ferns are p ...
Chapter 6 Biology of Flowering Plants Anatomy
... The first structure to emerge from most seeds is the primary root, which enables the developing seedling to become anchored in the soil and to absorb water for metabolism. There are two major types of structural root systems 1, the taproot system (found in all seed plants except monocots) and the fi ...
... The first structure to emerge from most seeds is the primary root, which enables the developing seedling to become anchored in the soil and to absorb water for metabolism. There are two major types of structural root systems 1, the taproot system (found in all seed plants except monocots) and the fi ...
national unit specification: general information
... SQA acknowledges the valuable contribution that Scotland’s colleges have made to the development of Higher National qualifications. Additional copies of this Unit specification can be purchased from the Scottish Qualifications Authority. Please contact the Customer Contact Centre for further details ...
... SQA acknowledges the valuable contribution that Scotland’s colleges have made to the development of Higher National qualifications. Additional copies of this Unit specification can be purchased from the Scottish Qualifications Authority. Please contact the Customer Contact Centre for further details ...
Western Water Hemlock (Cicuta douglasii) is a wetland plant that is
... Clinical signs of poisoning occur when a threshold dose is reached after which grand mal seizures and death occur. Water hemlock has small, white flowers that grow in umbrella like clusters. Side veins of the leaves lead to notches, not to tips at the outer margin. The thick rootstalk of water heml ...
... Clinical signs of poisoning occur when a threshold dose is reached after which grand mal seizures and death occur. Water hemlock has small, white flowers that grow in umbrella like clusters. Side veins of the leaves lead to notches, not to tips at the outer margin. The thick rootstalk of water heml ...
Grass Growth and Response to Grazing
... summer. Leaves are most photosynthetically active when they reach full expansion. As they age, their capacity for photosynthesis declines. The excess carbohydrate produced through photosynthesis helps produce additional leaves, reproductive organs or roots. Thus, photosynthate produced by the plant ...
... summer. Leaves are most photosynthetically active when they reach full expansion. As they age, their capacity for photosynthesis declines. The excess carbohydrate produced through photosynthesis helps produce additional leaves, reproductive organs or roots. Thus, photosynthate produced by the plant ...
Document
... Move upward in xylem sap Signal axillary buds to grow Don’t act alone – act with Auxin to ...
... Move upward in xylem sap Signal axillary buds to grow Don’t act alone – act with Auxin to ...
Natural History of the Methow Valley 2014 Edition
... another individual, but there is also a random reorganization of the DNA on the chromosomes as well. This leads to much greater variability in offspring than occurs in asexual reproduction. Many of the showiest structures of plants exist to ensure successful sexual reproduction, including of course ...
... another individual, but there is also a random reorganization of the DNA on the chromosomes as well. This leads to much greater variability in offspring than occurs in asexual reproduction. Many of the showiest structures of plants exist to ensure successful sexual reproduction, including of course ...
Environmental Science - Plants
... Regular: symmetric (identical sections) or Irregular: not radially symmetric flowers Single: 1 flower or Inflorescences: many flowers Complete: sepals, petals, stamens and carpals Incomplete: lack one or more of these structures ...
... Regular: symmetric (identical sections) or Irregular: not radially symmetric flowers Single: 1 flower or Inflorescences: many flowers Complete: sepals, petals, stamens and carpals Incomplete: lack one or more of these structures ...
glossary
... A type of dried fruit that has a seed attached to a wing, which often causes the fruit to spin downward when it falls from a tree. Most Maples have paired samaras in clusters, while most Ashes and Tree-of-Heaven have single samaras in large clusters. The most common type of leaf, where a single leaf ...
... A type of dried fruit that has a seed attached to a wing, which often causes the fruit to spin downward when it falls from a tree. Most Maples have paired samaras in clusters, while most Ashes and Tree-of-Heaven have single samaras in large clusters. The most common type of leaf, where a single leaf ...
Bela Lugosi Daylily
... Bela Lugosi Daylily features bold deep purple trumpet-shaped flowers with yellow throats at the ends of the stems from early to mid summer. The flowers are excellent for cutting. It's grassy leaves remain green in colour throughout the season. The fruit is not ornamentally significant. ...
... Bela Lugosi Daylily features bold deep purple trumpet-shaped flowers with yellow throats at the ends of the stems from early to mid summer. The flowers are excellent for cutting. It's grassy leaves remain green in colour throughout the season. The fruit is not ornamentally significant. ...
Jersey Jewel Asparagus
... Jersey Jewel Asparagus is an open herbaceous perennial with an upright spreading habit of growth. It brings an extremely fine and delicate texture to the garden composition and should be used to full effect. This is a relatively low maintenance perennial, and is best cleaned up in early spring befor ...
... Jersey Jewel Asparagus is an open herbaceous perennial with an upright spreading habit of growth. It brings an extremely fine and delicate texture to the garden composition and should be used to full effect. This is a relatively low maintenance perennial, and is best cleaned up in early spring befor ...
Background Information on Monocots and Dicots There are many
... exposed on the upper surfaces of cone scales, such as in pinecones. A pollen grain is carried by wind to the egg where the growth of the pollen tubes brings the sperm to the egg. The female cones produce the eggs, or ovules. Female cones have a sticky resin that “catches” the pollen released by the ...
... exposed on the upper surfaces of cone scales, such as in pinecones. A pollen grain is carried by wind to the egg where the growth of the pollen tubes brings the sperm to the egg. The female cones produce the eggs, or ovules. Female cones have a sticky resin that “catches” the pollen released by the ...
Trees and Plants Glossary and General Information
... A type of dried fruit that has a seed attached to a wing, which often causes the fruit to spin downward when it falls from a tree. Most Maples have paired samaras in clusters, while most Ashes and Tree-of-Heaven have single samaras in large clusters. The most common type of leaf, where a single leaf ...
... A type of dried fruit that has a seed attached to a wing, which often causes the fruit to spin downward when it falls from a tree. Most Maples have paired samaras in clusters, while most Ashes and Tree-of-Heaven have single samaras in large clusters. The most common type of leaf, where a single leaf ...
Plant morphology
Plant morphology or phytomorphology is the study of the physical form and external structure of plants. This is usually considered distinct from plant anatomy, which is the study of the internal structure of plants, especially at the microscopic level. Plant morphology is useful in the visual identification of plants.