here
... the basic unit of the female reproductive organ of a flower, the gynoecium. A flower may have zero, one, or more carpels. Multiple carpels may combine ...
... the basic unit of the female reproductive organ of a flower, the gynoecium. A flower may have zero, one, or more carpels. Multiple carpels may combine ...
Wax Myrtle - Lee County Extension
... branches. It has not been observed on foliage. In some areas, wax myrtle is especially prone to becoming heavily infested and dying from the effects of lobate lac scale. In Lee County, as of March 2011, infestations of lobate lac scale on wax myrtle has been relatively benign and rarely seen. Lobate ...
... branches. It has not been observed on foliage. In some areas, wax myrtle is especially prone to becoming heavily infested and dying from the effects of lobate lac scale. In Lee County, as of March 2011, infestations of lobate lac scale on wax myrtle has been relatively benign and rarely seen. Lobate ...
Monocot vs. Dicot Flowering Plants
... IB Assessment Statement • Outline three differences between Monocotyledons and Dicotyledons ...
... IB Assessment Statement • Outline three differences between Monocotyledons and Dicotyledons ...
Aquatic plants
... Water lily (Nymphaea ) also produces floating leaves. The flat leaves optimize exposure to light and are buoyant for floating. Plants are rooted in the saturated soil of a lake or pond. ...
... Water lily (Nymphaea ) also produces floating leaves. The flat leaves optimize exposure to light and are buoyant for floating. Plants are rooted in the saturated soil of a lake or pond. ...
2 - ncert
... axil of scale leaves. They are 2-3 cm long and bear a cluster of long, needle like leaves. (vi) The needle like green leaves are called acicular leaves. Fig. 2.11 Pinus tree (vii) The dwarf branch with its needles is known ...
... axil of scale leaves. They are 2-3 cm long and bear a cluster of long, needle like leaves. (vi) The needle like green leaves are called acicular leaves. Fig. 2.11 Pinus tree (vii) The dwarf branch with its needles is known ...
Aquatic plants
... Water lily (Nymphaea ) also produces floating leaves. The flat leaves optimize exposure to light and are buoyant for floating. Plants are rooted in the saturated soil of a lake or pond. ...
... Water lily (Nymphaea ) also produces floating leaves. The flat leaves optimize exposure to light and are buoyant for floating. Plants are rooted in the saturated soil of a lake or pond. ...
Diurnal and Light-Regulated Expression of AtSTP1 in Guard Cells of
... labeling of intact broad bean leaves with 14CO2 (Lu et al., 1997) showed that 14C-labeled Suc identified in guard cells resulted from fixation products synthesized in and secreted from the palisade parenchyma. However, the identity of the transported molecules (Glc, Fru, or Suc) had not been determi ...
... labeling of intact broad bean leaves with 14CO2 (Lu et al., 1997) showed that 14C-labeled Suc identified in guard cells resulted from fixation products synthesized in and secreted from the palisade parenchyma. However, the identity of the transported molecules (Glc, Fru, or Suc) had not been determi ...
3.02 Plant parts
... and minerals through the plant – The phloem moves food down from the leaves to the roots – The xylem moves water and nutrients up from the roots to the leaves ...
... and minerals through the plant – The phloem moves food down from the leaves to the roots – The xylem moves water and nutrients up from the roots to the leaves ...
Generation of triploids of hop (Humulus lupulus L.)
... Colchicine treatment was found to affect the survival rate of buds (Tab. 1). Vitality of buds decreased together with increasing concentrations of colchicine and prolonged exposure times. The highest mortality was observed after a 72h exposure with 0,1% colchicine exposure Flow cytometry analysis of ...
... Colchicine treatment was found to affect the survival rate of buds (Tab. 1). Vitality of buds decreased together with increasing concentrations of colchicine and prolonged exposure times. The highest mortality was observed after a 72h exposure with 0,1% colchicine exposure Flow cytometry analysis of ...
vascular cambium
... Concept 28.2: Meristems generate new cells for growth and control the developmental phases and life spans of plants A plant can grow throughout its life; this is called indeterminate growth Indeterminate growth is enabled by meristems, which are perpetually undifferentiated tissues Some plant ...
... Concept 28.2: Meristems generate new cells for growth and control the developmental phases and life spans of plants A plant can grow throughout its life; this is called indeterminate growth Indeterminate growth is enabled by meristems, which are perpetually undifferentiated tissues Some plant ...
Modified Roots
... Most plants produce either a taproot system in which there is a single large root with smaller branch roots, or a fibrous root system in which there are many smaller roots of similar diameter. Some plants, however, have intriguing root modifications with specific functions in addition to those of an ...
... Most plants produce either a taproot system in which there is a single large root with smaller branch roots, or a fibrous root system in which there are many smaller roots of similar diameter. Some plants, however, have intriguing root modifications with specific functions in addition to those of an ...
Nonvascular Plants - Life Sciences 4 All
... The prothallus starts the Gametophyte stage Gametophyte is heart shaped and short lived Male antheridia & female archegonia grow on gametophyte Sperm swims to egg to ...
... The prothallus starts the Gametophyte stage Gametophyte is heart shaped and short lived Male antheridia & female archegonia grow on gametophyte Sperm swims to egg to ...
Lecture 12: Gymnosperms and Angiosperms
... • Annual rings – xylem formed by the vascular cambium during one growth season • Early Spring wood – vessel diameter is large, xylem walls are thinner • Late Summer wood – vessel diameter is small, walls are thicker • Tropical trees: have no annual ...
... • Annual rings – xylem formed by the vascular cambium during one growth season • Early Spring wood – vessel diameter is large, xylem walls are thinner • Late Summer wood – vessel diameter is small, walls are thicker • Tropical trees: have no annual ...
Lecture 12: Gymnosperms and Angiosperms
... • Annual rings – xylem formed by the vascular cambium during one growth season • Early Spring wood – vessel diameter is large, xylem walls are thinner • Late Summer wood – vessel diameter is small, walls are thicker • Tropical trees: have no annual ...
... • Annual rings – xylem formed by the vascular cambium during one growth season • Early Spring wood – vessel diameter is large, xylem walls are thinner • Late Summer wood – vessel diameter is small, walls are thicker • Tropical trees: have no annual ...
Cistanche tubulosa (Schenk) R. Wight an important
... haustoria. Some thin roots are also formed at the junction of the host and parasite roots which remain thin (slender) and do not develop further. These might help in absorption of water, minerals etc., whenever available from the soil. The anatomical section of the host also reveals that haustoria f ...
... haustoria. Some thin roots are also formed at the junction of the host and parasite roots which remain thin (slender) and do not develop further. These might help in absorption of water, minerals etc., whenever available from the soil. The anatomical section of the host also reveals that haustoria f ...
Mycorrhiza
... containing a soil: sand mixture (5:2 by volume). There were three inoculation treatments (and one uninoculated control), each of them replicated nine times, giving a total of 36 pots. The pots were arranged completely randomly. The AM fungi tested were Glomus fasciculaturn, G. mosseae and G. deserti ...
... containing a soil: sand mixture (5:2 by volume). There were three inoculation treatments (and one uninoculated control), each of them replicated nine times, giving a total of 36 pots. The pots were arranged completely randomly. The AM fungi tested were Glomus fasciculaturn, G. mosseae and G. deserti ...
The Dirty Dozen and Beyond - Water Resources Education
... • rosette leaves large and erect with long petioles • basal and lower stem leaves are pinnately compound with saw-toothed edges and not hairy • the leaflets are often mitten-shaped and the leaf petioles clasp the stems • the stem leaves much smaller with 2 to 5 pairs of leaflets ...
... • rosette leaves large and erect with long petioles • basal and lower stem leaves are pinnately compound with saw-toothed edges and not hairy • the leaflets are often mitten-shaped and the leaf petioles clasp the stems • the stem leaves much smaller with 2 to 5 pairs of leaflets ...
Vegetative Growth and Organogenesis
... molecular mechanisms that underpin these growth patterns. Like embryogenesis, vegetative organogenesis and secondary growth rely on local differences in the interactions and regulatory feedback among hormones, which trigger complex programs of gene expression that drive specific aspects of organ dev ...
... molecular mechanisms that underpin these growth patterns. Like embryogenesis, vegetative organogenesis and secondary growth rely on local differences in the interactions and regulatory feedback among hormones, which trigger complex programs of gene expression that drive specific aspects of organ dev ...
Layering - Middletown Public Schools
... The process typically involves wounding the target region to expose the inner stem and optionally applying rooting compounds. In ground layering, the stem is bent down and the target region buried in the soil. This is done in plant nurseries in imitation of natural layering by many plants such as br ...
... The process typically involves wounding the target region to expose the inner stem and optionally applying rooting compounds. In ground layering, the stem is bent down and the target region buried in the soil. This is done in plant nurseries in imitation of natural layering by many plants such as br ...
lnternal morphology and histology of the fish mite
... wall of the stomach (see Fig. 3) are of the columnar type. (T. Fig. z). They are tall with attenuated bases and with convex distal ends projecting well into the lumen. The cytoplasm though does not show much affinity towards stains is granular. The nuclei are spherical or spindle shaped and basally ...
... wall of the stomach (see Fig. 3) are of the columnar type. (T. Fig. z). They are tall with attenuated bases and with convex distal ends projecting well into the lumen. The cytoplasm though does not show much affinity towards stains is granular. The nuclei are spherical or spindle shaped and basally ...
BIO 104 - Jefferson State Community College
... phylogenetic relationships between the major animal phyla. 1. Identify the metazoa. 2. Discuss the syncytial and colonial flagellate theories of metazoan evolution including the pros and cons of each theory. 3. Describe the various types of symmetry and be able to recognize examples of each. 4. Desc ...
... phylogenetic relationships between the major animal phyla. 1. Identify the metazoa. 2. Discuss the syncytial and colonial flagellate theories of metazoan evolution including the pros and cons of each theory. 3. Describe the various types of symmetry and be able to recognize examples of each. 4. Desc ...
species by Van species was Drimys. In presently - UvA-DARE
... material of the Queensland species is ...
... material of the Queensland species is ...
Unit I – Grasslands and Grassland Plants
... Leaf parts – The basic parts of a leaf on legumes, forbs, and woody plants are the petiole, stipules, base, and blade. See Figure 3.11. The petiole is the stalk that connects the leaf to the stem. Stipules are small leaf-like structures sometimes found at the base of the petiole. They usually occur ...
... Leaf parts – The basic parts of a leaf on legumes, forbs, and woody plants are the petiole, stipules, base, and blade. See Figure 3.11. The petiole is the stalk that connects the leaf to the stem. Stipules are small leaf-like structures sometimes found at the base of the petiole. They usually occur ...
Meristem
A meristem is the tissue in most plants containing undifferentiated cells (meristematic cells), found in zones of the plant where growth can take place.Meristematic cells give rise to various organs of the plant and keep the plant growing. The shoot apical meristem (SAM) gives rise to organs like the leaves and flowers, while the root apical meristem (RAM) provides the meristematic cells for the future root growth. SAM and RAM cells divide rapidly and are considered indeterminate, in that they do not possess any defined end status. In that sense, the meristematic cells are frequently compared to the stem cells in animals, which have an analogous behavior and function.The term meristem was first used in 1858 by Karl Wilhelm von Nägeli (1817–1891) in his book Beiträge zur Wissenschaftlichen Botanik. It is derived from the Greek word merizein (μερίζειν), meaning to divide, in recognition of its inherent function.In general, differentiated plant cells cannot divide or produce cells of a different type. Therefore, cell division in the meristem is required to provide new cells for expansion and differentiation of tissues and initiation of new organs, providing the basic structure of the plant body.Meristematic cells are incompletely or not at all differentiated, and are capable of continued cellular division (youthful). Furthermore, the cells are small and protoplasm fills the cell completely. The vacuoles are extremely small. The cytoplasm does not contain differentiated plastids (chloroplasts or chromoplasts), although they are present in rudimentary form (proplastids). Meristematic cells are packed closely together without intercellular cavities. The cell wall is a very thin primary cell wall.Maintenance of the cells requires a balance between two antagonistic processes: organ initiation and stem cell population renewal.Apical meristems are the completely undifferentiated (indeterminate) meristems in a plant. These differentiate into three kinds of primary meristems. The primary meristems in turn produce the two secondary meristem types. These secondary meristems are also known as lateral meristems because they are involved in lateral growth.At the meristem summit, there is a small group of slowly dividing cells, which is commonly called the central zone. Cells of this zone have a stem cell function and are essential for meristem maintenance. The proliferation and growth rates at the meristem summit usually differ considerably from those at the periphery.Meristems also are induced in the roots of legumes such as soybean, Lotus japonicus, pea, and Medicago truncatula after infection with soil bacteria commonly called Rhizobium. Cells of the inner or outer cortex in the so-called ""window of nodulation"" just behind the developing root tip are induced to divide. The critical signal substance is the lipo-oligosaccharide Nod-factor, decorated with side groups to allow specificity of interaction. The Nod factor receptor proteins NFR1 and NFR5 were cloned from several legumes including Lotus japonicus, Medicago truncatula and soybean (Glycine max). Regulation of nodule meristems utilizes long distance regulation commonly called ""Autoregulation of Nodulation"" (AON). This process involves a leaf-vascular tissue located LRR receptor kinases (LjHAR1, GmNARK and MtSUNN), CLE peptide signalling, and KAPP interaction, similar to that seen in the CLV1,2,3 system. LjKLAVIER also exhibits a nodule regulation phenotype though it is not yet known how this relates to the other AON receptor kinases.