2013年1月12日托福写作真题回忆
... malic acid, retaining it until daylight returns, and only then using it in photosynthesis. Because transpiration takes place during the cooler, more humid night hours, water loss is significantly reduced. ...
... malic acid, retaining it until daylight returns, and only then using it in photosynthesis. Because transpiration takes place during the cooler, more humid night hours, water loss is significantly reduced. ...
Pacific Ninebark (Physocarpus capitatus)
... upright or spreading, depending on how you prune the arching branches. Especially in a dry, sunny site, water it well for the first two growing seasons. ...
... upright or spreading, depending on how you prune the arching branches. Especially in a dry, sunny site, water it well for the first two growing seasons. ...
Fungi are part ofаа nature`s recycling system.ааThey break down
... The conifers thrive in a wide variety of habitats and can be the the longest living organisms on the planet They developed fine thin needles for leaves to preserve water, this works well with the waxy cuticle layer that covers these leaves. ...
... The conifers thrive in a wide variety of habitats and can be the the longest living organisms on the planet They developed fine thin needles for leaves to preserve water, this works well with the waxy cuticle layer that covers these leaves. ...
Seedless Vascular Plants
... vascular plants, consisting merely of evenly forking green stems without roots. The two or three species of the genus Psilotum do, however, have tiny, green, spirally arranged, flaps of tissue lacking veins and stomata. Another genus, Tmespiteris, has more leaflike appendages. The gametophytes of wh ...
... vascular plants, consisting merely of evenly forking green stems without roots. The two or three species of the genus Psilotum do, however, have tiny, green, spirally arranged, flaps of tissue lacking veins and stomata. Another genus, Tmespiteris, has more leaflike appendages. The gametophytes of wh ...
Quito, 30th January 1880
... Height up to three feet, more or less compact growing, leaves like Aerid.quinquevulnerum, sometimes longer flowering racemes longer than the leaves 12 – 18 inches long, densely flowered. Flowers very fragrant, sepals and petals tipped with a big blotch of violet, white, and thickly dotted with viole ...
... Height up to three feet, more or less compact growing, leaves like Aerid.quinquevulnerum, sometimes longer flowering racemes longer than the leaves 12 – 18 inches long, densely flowered. Flowers very fragrant, sepals and petals tipped with a big blotch of violet, white, and thickly dotted with viole ...
Pittosporum – Images - San Diego Master Gardeners
... • Coastal gardeners – Ideal for areas with salt water conditions – Esp. Japanese pittosporum (P. tobira) – Grows in a variety of soils – sand to clay • Alkaline to acid ...
... • Coastal gardeners – Ideal for areas with salt water conditions – Esp. Japanese pittosporum (P. tobira) – Grows in a variety of soils – sand to clay • Alkaline to acid ...
The Wildflowers of Jackson Morrow Park
... Red Clover Pea family (Leguminosae) Tall stem with rounded flower head at top Red to light purple colored petals surrounded by leaflets Toadshade Trillium Lily family (Liliaceae) 3 rounded leaves around flower lack their own stems Leaves may be maroon or purple-tinted ...
... Red Clover Pea family (Leguminosae) Tall stem with rounded flower head at top Red to light purple colored petals surrounded by leaflets Toadshade Trillium Lily family (Liliaceae) 3 rounded leaves around flower lack their own stems Leaves may be maroon or purple-tinted ...
Chapter 35
... There is gradual transition from one zone to the next. Some cells may begin to elongate and differentiate in the region of cell division whereas others do it the region of elongation. Primary tissues of the root. There are three tissue systems in the root: epidermis (dermal tissue system), cortex (g ...
... There is gradual transition from one zone to the next. Some cells may begin to elongate and differentiate in the region of cell division whereas others do it the region of elongation. Primary tissues of the root. There are three tissue systems in the root: epidermis (dermal tissue system), cortex (g ...
Native Water-milfoils Late fall and early spring identification characteristics
... turions form on the upper portion of the plant and/or on the plant’s side branches during the fall of the year. The turions are often still attached to plants that are found washing up along shorelines in late fall (October-November). These turions break away from the plant and free-float to new are ...
... turions form on the upper portion of the plant and/or on the plant’s side branches during the fall of the year. The turions are often still attached to plants that are found washing up along shorelines in late fall (October-November). These turions break away from the plant and free-float to new are ...
Vascular Plants
... Vascular plants have tubes that help to move water and nutrients through the stem and to the leaves to keep the plant alive and well. Vascular plants have two types of specialized tissues to move materials: Xylem: transports water and minerals Phloem: transport sugar ...
... Vascular plants have tubes that help to move water and nutrients through the stem and to the leaves to keep the plant alive and well. Vascular plants have two types of specialized tissues to move materials: Xylem: transports water and minerals Phloem: transport sugar ...
Newsletter - Sun and Black Flowers
... Marjoram (Origanum majorana)is an aromatic herb in the mint family which originated in Egypt and Arabia. It is also widely referred to as Oregano. Today, it is commonly found in the Mediterranean region or grown in gardens around the world. In its varied forms of: Marjoram essential oil, fresh or dr ...
... Marjoram (Origanum majorana)is an aromatic herb in the mint family which originated in Egypt and Arabia. It is also widely referred to as Oregano. Today, it is commonly found in the Mediterranean region or grown in gardens around the world. In its varied forms of: Marjoram essential oil, fresh or dr ...
Boulder County Noxious Weed List
... This biennial plant is a new invader in wetlands of Colorado. It was introduced as an ornamental for dried flower arrangements and for carding wool. Small infestations may be controlled by hand pulling. Large infestations may need to be controlled with an herbicide. ...
... This biennial plant is a new invader in wetlands of Colorado. It was introduced as an ornamental for dried flower arrangements and for carding wool. Small infestations may be controlled by hand pulling. Large infestations may need to be controlled with an herbicide. ...
Semi-tuberous notes A5FINAL
... near the coast of South Africa on shaded slopes in the Cape of Good Hope. The distinctive characteristic of this group is the thickening of the stem at the base, which then tapers away to slender branches. They are an interesting arty looking group, makes them ideal as a bonsai like plant as they re ...
... near the coast of South Africa on shaded slopes in the Cape of Good Hope. The distinctive characteristic of this group is the thickening of the stem at the base, which then tapers away to slender branches. They are an interesting arty looking group, makes them ideal as a bonsai like plant as they re ...
Embryo develops into the sporophyte Major groups of plants
... Haploid spores divide to become haploid gametophytes. Haploid gametophytes produce haploid gametes (eggs and sperm) Egg and sperm unite to form the diploid zygote. Zygote developes into the embryo. ...
... Haploid spores divide to become haploid gametophytes. Haploid gametophytes produce haploid gametes (eggs and sperm) Egg and sperm unite to form the diploid zygote. Zygote developes into the embryo. ...
Leaf polarity and meristem formation in Arabidopsis
... of the phb-1d mutant phenotype is variable. Some leaves are rod-like while others are shaped like trumpets. The latter have adaxial tissue on their outer surfaces and abaxial tissue on the inside of the ‘bell’ of the trumpet. phb-1d leaves grow nearly vertically rather than bending away from the pla ...
... of the phb-1d mutant phenotype is variable. Some leaves are rod-like while others are shaped like trumpets. The latter have adaxial tissue on their outer surfaces and abaxial tissue on the inside of the ‘bell’ of the trumpet. phb-1d leaves grow nearly vertically rather than bending away from the pla ...
Malus domestica L
... to the inhibition of cellular turgor, the reduction of total protein amount and to the generated free radicals by lipoperoxidation. As stated by Maximiec (2007), formation of lipid peroxides may be a prolonged consequence of heavy metal-induced oxidative stress and may act as an activation signal fo ...
... to the inhibition of cellular turgor, the reduction of total protein amount and to the generated free radicals by lipoperoxidation. As stated by Maximiec (2007), formation of lipid peroxides may be a prolonged consequence of heavy metal-induced oxidative stress and may act as an activation signal fo ...
What are herbs and spices?
... • Oils usually sequestered in specialized pockets or glands on plants; oils produced by plant as aSractants or repellants (some compounds both aSract some visitors and repel others) • We use small amounts mixed with food for pleasant, rather than deterrent effect • Compounds must be of fairly lo ...
... • Oils usually sequestered in specialized pockets or glands on plants; oils produced by plant as aSractants or repellants (some compounds both aSract some visitors and repel others) • We use small amounts mixed with food for pleasant, rather than deterrent effect • Compounds must be of fairly lo ...
Eriobotrya fulvicoma (Rosaceae), a new species from Guangdong
... The generitype E. japonica was described from Nagasaki, Japan, by Thunberg, who named it Mespilus japonica (Thunberg 1784, Soriano et al. 2005). In 1790, it was moved to Crataegus by J. Lindley and renamed Crataegus bibas (Morton 1987). Lindley (1822) observed that the species was very different fro ...
... The generitype E. japonica was described from Nagasaki, Japan, by Thunberg, who named it Mespilus japonica (Thunberg 1784, Soriano et al. 2005). In 1790, it was moved to Crataegus by J. Lindley and renamed Crataegus bibas (Morton 1987). Lindley (1822) observed that the species was very different fro ...
Ovary
... 1. Two classes of angiosperms: monocots and dicots . Monocots have one cotyledon and dicots have two. 2. Cotyledons (seed leaves) are the first leaves produced by plants. 3. They are found in the seed or plant embryo. 4. They provide stored food and nutrients for the growing plant until the true le ...
... 1. Two classes of angiosperms: monocots and dicots . Monocots have one cotyledon and dicots have two. 2. Cotyledons (seed leaves) are the first leaves produced by plants. 3. They are found in the seed or plant embryo. 4. They provide stored food and nutrients for the growing plant until the true le ...
important plants - Montana State University Extension
... There are several native and introduced clovers. Each clover leaf is composed of three leaflets. Top of leaflet marked with lighter green “V” on some species. White clover and alsike clover are two important forest clovers. White clover grows closer to the ground (creeping). Alsike clover ...
... There are several native and introduced clovers. Each clover leaf is composed of three leaflets. Top of leaflet marked with lighter green “V” on some species. White clover and alsike clover are two important forest clovers. White clover grows closer to the ground (creeping). Alsike clover ...
The Garden: Flavours and aromas of coriander and dill
... Pick the young leaves before the mature ferny ones develop. Sow seed every 10 days or so to maintain leaf production, making the last sowing in September if you are in an area with milder winters. As plants mature, the foliage changes and becomes finely cut, almost dill-like. At this stage, the foli ...
... Pick the young leaves before the mature ferny ones develop. Sow seed every 10 days or so to maintain leaf production, making the last sowing in September if you are in an area with milder winters. As plants mature, the foliage changes and becomes finely cut, almost dill-like. At this stage, the foli ...
Unit 11 Guided Reading Questions
... 12. How do we now know that monocot and dicot classification of angiosperms does not completely reflect the evolution of these plants? What is the newer classification system? ...
... 12. How do we now know that monocot and dicot classification of angiosperms does not completely reflect the evolution of these plants? What is the newer classification system? ...
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.