the endocrine system
... GROWTH HORMONE: SYNTHESIS, SECRETION, AND METABOLISM ABOUT 1/6 OF THE AP CELLS 5 - 10 MG STORED 10X ANY OTHER PITUITARY HORMONE TWO FORMS 22K AND 20K BOUND TO PROTEIN IN BLOOD (SAME COMPOSITION AS RECEPTOR) ...
... GROWTH HORMONE: SYNTHESIS, SECRETION, AND METABOLISM ABOUT 1/6 OF THE AP CELLS 5 - 10 MG STORED 10X ANY OTHER PITUITARY HORMONE TWO FORMS 22K AND 20K BOUND TO PROTEIN IN BLOOD (SAME COMPOSITION AS RECEPTOR) ...
Flowers - StudyChamp
... Question 2: Match the words in column A to the correct description in column C. Write only the corresponding letter in column B. ...
... Question 2: Match the words in column A to the correct description in column C. Write only the corresponding letter in column B. ...
Notes to Instructors
... Monocot leaves have parallel veins (vascular bundles); dicot leaves have netlike veins. Monocot floral parts are generally in multiples of three; dicot floral parts are in multiples of four or five. Monocots tend to have fibrous root systems; dicots usually have taproot ...
... Monocot leaves have parallel veins (vascular bundles); dicot leaves have netlike veins. Monocot floral parts are generally in multiples of three; dicot floral parts are in multiples of four or five. Monocots tend to have fibrous root systems; dicots usually have taproot ...
Document
... the pollen wall (containing sporopollenin) • This allows the male gametophyte to move via wind or animal to an egg, where it will produce sperm • Pollen is NOT dependent on water for spreading to eggs ...
... the pollen wall (containing sporopollenin) • This allows the male gametophyte to move via wind or animal to an egg, where it will produce sperm • Pollen is NOT dependent on water for spreading to eggs ...
Seed germination - Howard University > Plant Biotechnology
... Salinity in soil around the world • High salinity in soil is a common environmental problem in irrigated lands and in arid and semiarid regions, yielding poor crop production. • The problem is often associated with high water tables, caused by a lack of natural drainage ...
... Salinity in soil around the world • High salinity in soil is a common environmental problem in irrigated lands and in arid and semiarid regions, yielding poor crop production. • The problem is often associated with high water tables, caused by a lack of natural drainage ...
Comparing a Monocot to a Dicot Seed
... Both monocot and dicot seeds develop in similar ways and have the same parts. There are a few minor differences: monocots start out with one seed leaf, while dicots have two. The technical word for seed leaf is cotyledon: you can find it on the coloring sheet; it is the first leaf to emerge from a d ...
... Both monocot and dicot seeds develop in similar ways and have the same parts. There are a few minor differences: monocots start out with one seed leaf, while dicots have two. The technical word for seed leaf is cotyledon: you can find it on the coloring sheet; it is the first leaf to emerge from a d ...
CHAPTER 38
... Both sperm fuse with nuclei in the embryo sac. o One sperm fertilizes the egg to form the zygote. o The other sperm combines with the two polar nuclei to form a triploid (3n) nucleus in the central cell of the female gametophyte. o This large cell will give rise to the endosperm, a food-storing tiss ...
... Both sperm fuse with nuclei in the embryo sac. o One sperm fertilizes the egg to form the zygote. o The other sperm combines with the two polar nuclei to form a triploid (3n) nucleus in the central cell of the female gametophyte. o This large cell will give rise to the endosperm, a food-storing tiss ...
Diversity in the Plant Kingdom
... A sexually reproducing thallose liverwort has little umbrella-like structures growing up out of the ribbon (see Fig. 30.6 bottom, in your text (Levine and Miller, 1994, 600)); eggs and sperm are produced in the little umbrella tops; later, tiny bag-like sporophytic structures grow underneath the fem ...
... A sexually reproducing thallose liverwort has little umbrella-like structures growing up out of the ribbon (see Fig. 30.6 bottom, in your text (Levine and Miller, 1994, 600)); eggs and sperm are produced in the little umbrella tops; later, tiny bag-like sporophytic structures grow underneath the fem ...
Signs of nutrient deficiency
... leaf tip and along the midrib, whilst the edges remain green. The growth becomes stunted with spindly stalks. Flowers are produced. (Note: in sulfur deficiency yellowing occurs first in the younger leaves). Phosphorus deficiency results in slow growth and dull yellow-green foliage. Plants remain a v ...
... leaf tip and along the midrib, whilst the edges remain green. The growth becomes stunted with spindly stalks. Flowers are produced. (Note: in sulfur deficiency yellowing occurs first in the younger leaves). Phosphorus deficiency results in slow growth and dull yellow-green foliage. Plants remain a v ...
Comparing a Monocot to a Dicot Seed
... Both monocot and dicot seeds develop in similar ways and have the same parts. There are a few minor differences: monocots start out with one seed leaf, while dicots have two. The technical word for seed leaf is cotyledon: you can find it on the coloring sheet; it is the first leaf to emerge from a d ...
... Both monocot and dicot seeds develop in similar ways and have the same parts. There are a few minor differences: monocots start out with one seed leaf, while dicots have two. The technical word for seed leaf is cotyledon: you can find it on the coloring sheet; it is the first leaf to emerge from a d ...
Unit I-Plant Kingdom - Sakshieducation.com
... ∗ Spores are formed due to meiosis in spore mother cells of sporangia. In majority of them all the spores formed in a species are morphologically similar and described as homosporous (Lycopodium, Dryopteris). Some produce morphologically two different types of spores described as heterosporous as in ...
... ∗ Spores are formed due to meiosis in spore mother cells of sporangia. In majority of them all the spores formed in a species are morphologically similar and described as homosporous (Lycopodium, Dryopteris). Some produce morphologically two different types of spores described as heterosporous as in ...
Yellow Toadflax
... ends of stems and have a long spur extending from the base that is usually as long as the flower itself – in all, 2 to 3.5 cm long. The snapdragon-like flowers can have orange colouring on the throat. They flower at different times depending on site conditions. In high elevations they could flower a ...
... ends of stems and have a long spur extending from the base that is usually as long as the flower itself – in all, 2 to 3.5 cm long. The snapdragon-like flowers can have orange colouring on the throat. They flower at different times depending on site conditions. In high elevations they could flower a ...
Flower Dissection
... which are the leaves between the petals, come in an arrangement of three each. The petals and sepals have similar color and texture, so the sepals actually resemble the petals much more closely than they resemble most green leaves. ...
... which are the leaves between the petals, come in an arrangement of three each. The petals and sepals have similar color and texture, so the sepals actually resemble the petals much more closely than they resemble most green leaves. ...
Herbaceous Cuttings - NAAE Communities of Practice
... - In addition to the different concentration levels, the length of time that the growth regulator remains in contact with the base of the cutting can also have an effect on rooting, which will be demonstrated in this laboratory project. ...
... - In addition to the different concentration levels, the length of time that the growth regulator remains in contact with the base of the cutting can also have an effect on rooting, which will be demonstrated in this laboratory project. ...
Strawberry Plant Structure and Growth Habit
... are open – strawberry leaves have large numbers of stomata, and water consumption can be very high in warm periods in April and May. For tissue sampling in late winter and early spring, fully expanded, recently mature trifoliates are selected for tissue sampling starting in early March. The petioles ...
... are open – strawberry leaves have large numbers of stomata, and water consumption can be very high in warm periods in April and May. For tissue sampling in late winter and early spring, fully expanded, recently mature trifoliates are selected for tissue sampling starting in early March. The petioles ...
Life Cycle Patterns
... under optimal growing conditions. At the end of 4 months this would result in about 1 nonillion plants (1 followed by 30 zeros) occupying a total volume roughly equivalent to the planet earth. Some of these methods are discussed under vegetative terminology at the ...
... under optimal growing conditions. At the end of 4 months this would result in about 1 nonillion plants (1 followed by 30 zeros) occupying a total volume roughly equivalent to the planet earth. Some of these methods are discussed under vegetative terminology at the ...
Evolution of the Flower
... The gynoecium (from the Greek gyne, “woman,” + oikos, “house”) is a collective term for all the female parts of a flower. In most flowers, the gynoecium, which is unique to angiosperms, consists of a single carpel or two or more fused carpels. Single or fused carpels are often referred to as simple ...
... The gynoecium (from the Greek gyne, “woman,” + oikos, “house”) is a collective term for all the female parts of a flower. In most flowers, the gynoecium, which is unique to angiosperms, consists of a single carpel or two or more fused carpels. Single or fused carpels are often referred to as simple ...
Secretory Structures
... secretion by nectaris. Vascular tissue occurs more or less close to the secretory tissue, some nectaries have their own vascular bundles, often consisting of phloem only. Nectaries secrete sugar-containing liquid (nectar), the sugar is not as derived from phloem but modified by enzymes of nectaries ...
... secretion by nectaris. Vascular tissue occurs more or less close to the secretory tissue, some nectaries have their own vascular bundles, often consisting of phloem only. Nectaries secrete sugar-containing liquid (nectar), the sugar is not as derived from phloem but modified by enzymes of nectaries ...
Chapter 29 and 35 practice questions with answers
... A) They are all wind pollinated. B) They are heterosporous. C) They can reproduce asexually by producing gemmae. D) They require water for reproduction. Answer: D Bloom's Taxonomy: Application/Analysis Section: 29.2 25) Most moss gametophytes do not have a cuticle and are 1-2 cells thick. What does ...
... A) They are all wind pollinated. B) They are heterosporous. C) They can reproduce asexually by producing gemmae. D) They require water for reproduction. Answer: D Bloom's Taxonomy: Application/Analysis Section: 29.2 25) Most moss gametophytes do not have a cuticle and are 1-2 cells thick. What does ...
CHAPTER 39
... Auxin rapidly alters gene expression, causing cells in the region of elongation to produce new proteins within minutes. Some of these proteins are short-lived transcription factors that repress or activate the expression of other genes. Auxin stimulates a sustained growth response of making the addi ...
... Auxin rapidly alters gene expression, causing cells in the region of elongation to produce new proteins within minutes. Some of these proteins are short-lived transcription factors that repress or activate the expression of other genes. Auxin stimulates a sustained growth response of making the addi ...
Plant tissue culture Plant tissue culture may be defined as
... Development of haploids through anther and pollen culture for the first time ...
... Development of haploids through anther and pollen culture for the first time ...
The Unique Plant: Mimosa Plant
... seeds that are oval, flat, light brown and 3–4 mm in diameter. There are about 145 seeds/g. In the Southern Hemisphere, the fruit ripens from February to April. The tree's bark is dark brown to gray. It splits lengthwise and the inside is reddish brown. The tree's wood is dark reddish brown with a ...
... seeds that are oval, flat, light brown and 3–4 mm in diameter. There are about 145 seeds/g. In the Southern Hemisphere, the fruit ripens from February to April. The tree's bark is dark brown to gray. It splits lengthwise and the inside is reddish brown. The tree's wood is dark reddish brown with a ...
No Slide Title
... • Species are classified according to their root systems – Fibrous – Rhizomatous – Tuberous (but all species have fibrous roots) ...
... • Species are classified according to their root systems – Fibrous – Rhizomatous – Tuberous (but all species have fibrous roots) ...
2. Dendrology Gymnosperms
... phloem) of their vascular tissues (i.e. they produced wood), and some grew to be tall trees. ...
... phloem) of their vascular tissues (i.e. they produced wood), and some grew to be tall trees. ...
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.