The Digestive Tract of the Cod Eleutheroembryo ("Yolk
... This phase is the last part of the embryonic period, during which the embryo is free-living (eleutheros=free), but still depends mainly on its yolk-sac for food, and lasts from hatching to the start of exogenous feeding. No mouth is present just after hatching, but it is perforated one day after hat ...
... This phase is the last part of the embryonic period, during which the embryo is free-living (eleutheros=free), but still depends mainly on its yolk-sac for food, and lasts from hatching to the start of exogenous feeding. No mouth is present just after hatching, but it is perforated one day after hat ...
Chapter 16 Lecture Outline A. gustation
... consists of 3 cell layers: photoreceptor cells (rods and cones) - tips embedded in pigmented layer, sensitive to light bipolar cells - superficial to photoreceptors, connect photoreceptors to ganglion cells ganglion cells - surface of nervous layer; axons form cranial nerve II (optic nerve) anterior ...
... consists of 3 cell layers: photoreceptor cells (rods and cones) - tips embedded in pigmented layer, sensitive to light bipolar cells - superficial to photoreceptors, connect photoreceptors to ganglion cells ganglion cells - surface of nervous layer; axons form cranial nerve II (optic nerve) anterior ...
20.1 Origins of Plant Life
... water vapor through leaves. – water vapor exits leaf stomata – helps pull water to the top ...
... water vapor through leaves. – water vapor exits leaf stomata – helps pull water to the top ...
Boy Plant Parts - BirdBrain Science
... Pollen may seem magical because it lets plants move from place to place while standing still, but it does not come from thin air. Look around the center of most flowers, and you will find where the plant makes this magic dust. Here you will see a group of several parts that look like they could be t ...
... Pollen may seem magical because it lets plants move from place to place while standing still, but it does not come from thin air. Look around the center of most flowers, and you will find where the plant makes this magic dust. Here you will see a group of several parts that look like they could be t ...
Basic Botany
... May break bud and seed dormancy in plants usually needing light or low temps. to break dormancy • May induce flowering in long-day plants • Gibberellins often work in concert with auxin ...
... May break bud and seed dormancy in plants usually needing light or low temps. to break dormancy • May induce flowering in long-day plants • Gibberellins often work in concert with auxin ...
Plant Anatomy2
... Bulbs such as onions, garlic, tulips, and lilies Tubers such as potatos Rhizomes such as grasses, iris, and orchids Corms such as crocus stolons such as in strawberries ...
... Bulbs such as onions, garlic, tulips, and lilies Tubers such as potatos Rhizomes such as grasses, iris, and orchids Corms such as crocus stolons such as in strawberries ...
VEGETATIVE ANATOMY AND FAMILIAL
... in the cloud-forest zones of Peru. It can be an erect shrub where plants are solitary; where it occurs on steep slopes among other vegetation, it often leans outward and downward. Study of these plants revealed some features different from those ascribed to Tovaria above. These can be used as new ev ...
... in the cloud-forest zones of Peru. It can be an erect shrub where plants are solitary; where it occurs on steep slopes among other vegetation, it often leans outward and downward. Study of these plants revealed some features different from those ascribed to Tovaria above. These can be used as new ev ...
Chapter 8: Plants
... plants • Largest and most diverse of the gymnosperms • Ginkgoes- only one living tree today called Ginkgo biloba • Gnetophytes- live in dry areas • Can be either trees, shrubs, or vines • The plant Welwitschia can live for 1,000 years ...
... plants • Largest and most diverse of the gymnosperms • Ginkgoes- only one living tree today called Ginkgo biloba • Gnetophytes- live in dry areas • Can be either trees, shrubs, or vines • The plant Welwitschia can live for 1,000 years ...
Technology Review (Cambridge, Mass
... Website for Rost et al/Plant Biology 2e, ISBN: 0534495958 Objectives Chapter #13 ...
... Website for Rost et al/Plant Biology 2e, ISBN: 0534495958 Objectives Chapter #13 ...
FIVE PETALS: THE MYSTERIOUS NUMBER “5”
... In the formation of flowers, a reproductive shoot apex generates the primordiums of a floral leaf, usually in the order of the primordium of sepals, petals, and carpels. When carpel primordiums are made up, a reproductive shoot apex completes its division and becomes a part of carpels to end it (Kak ...
... In the formation of flowers, a reproductive shoot apex generates the primordiums of a floral leaf, usually in the order of the primordium of sepals, petals, and carpels. When carpel primordiums are made up, a reproductive shoot apex completes its division and becomes a part of carpels to end it (Kak ...
Access Study Guide 6
... List some reasons why coevolution between plants and animals is very important. ...
... List some reasons why coevolution between plants and animals is very important. ...
Canna flaccida Introduction October, 1999 Fact Sheet FPS-102
... directly planted in the ground in late spring and into the summer. They can be planted directly in shallow water at the edge of a pond. Some staking may be necessary as is the removal of dead blooms in order to provide for a neat appearance. In southern climates, rhizomes are left in the ground to g ...
... directly planted in the ground in late spring and into the summer. They can be planted directly in shallow water at the edge of a pond. Some staking may be necessary as is the removal of dead blooms in order to provide for a neat appearance. In southern climates, rhizomes are left in the ground to g ...
Pre-lab homework Lab 3: Reproduction Across the Kingdoms
... Primary growth: Plants exhibit a growth pattern that is very different from those seen in most animals. In primary growth undifferentiated groups of cells called primary meristems divide and differentiate into the basic tissues of a plant. These meristematic regions are found at the tips of growing ...
... Primary growth: Plants exhibit a growth pattern that is very different from those seen in most animals. In primary growth undifferentiated groups of cells called primary meristems divide and differentiate into the basic tissues of a plant. These meristematic regions are found at the tips of growing ...
Course Specifications
... endosperm development, life cycle phase changes, secondary growth, trichome development, miRNA mediated control on development, hormonal control on development, leaf and shoot development, root development. ...
... endosperm development, life cycle phase changes, secondary growth, trichome development, miRNA mediated control on development, hormonal control on development, leaf and shoot development, root development. ...
Chapter 2 – Plant Structures and Functions
... minerals up from roots to the stem – phloem: carries sugar from leaves down the stem and into roots ...
... minerals up from roots to the stem – phloem: carries sugar from leaves down the stem and into roots ...
Life of Plants
... _____ A seed develops. _____ The pollinator flies to another flower and brushes against the pistil, leaving pollen on it. _____ A new plant begins to grow. _____ A pollinator flies to a flower to taste its ...
... _____ A seed develops. _____ The pollinator flies to another flower and brushes against the pistil, leaving pollen on it. _____ A new plant begins to grow. _____ A pollinator flies to a flower to taste its ...
Botany basics
... DNA) necessary to develop into a complete plant. This characteristic is the main reason that vegetative (asexual) reproduction works. For example, the cells of a small leaf cutting from an African violet have all of the genetic information necessary to generate a root system, stems, more leaves, and ...
... DNA) necessary to develop into a complete plant. This characteristic is the main reason that vegetative (asexual) reproduction works. For example, the cells of a small leaf cutting from an African violet have all of the genetic information necessary to generate a root system, stems, more leaves, and ...
Roots - Missouri State University
... • Roots Grow From Meristems Near the Tip of Roots • Root Cap Is at Tip • Being Regenerated By the Root Tip It Protects – Cells Deposited to the Sides, Leaving Thin Gel-Like Coating on Soil ...
... • Roots Grow From Meristems Near the Tip of Roots • Root Cap Is at Tip • Being Regenerated By the Root Tip It Protects – Cells Deposited to the Sides, Leaving Thin Gel-Like Coating on Soil ...
17.3 What Are The Tissues And Cell Types Of Plants?
... Flowering plants have a root system and a shoot system (continued). • The part of the plant above ground is the shoot system, and consists of leaves, buds, flowers, and fruit born on stems. • The functions of shoots include photosynthesis, reproduction, and transport between different parts of the ...
... Flowering plants have a root system and a shoot system (continued). • The part of the plant above ground is the shoot system, and consists of leaves, buds, flowers, and fruit born on stems. • The functions of shoots include photosynthesis, reproduction, and transport between different parts of the ...
Chapter 2 – Plant Structures and Functions
... minerals up from roots to the stem – phloem: carries sugar from leaves down the stem and into roots ...
... minerals up from roots to the stem – phloem: carries sugar from leaves down the stem and into roots ...
Plant Reproduction 2 Not involving gamete formation. No sex
... A method of artificial/vegetative propagation where a branch of a plant is bent over and pinned to the earth at a node. When roots develop the branch is separated from the parent plant. The cell that undergoes meiosis to produce the megaspore. Also called the embryo sac mother cell. The growing of a ...
... A method of artificial/vegetative propagation where a branch of a plant is bent over and pinned to the earth at a node. When roots develop the branch is separated from the parent plant. The cell that undergoes meiosis to produce the megaspore. Also called the embryo sac mother cell. The growing of a ...
class a noxious weeds
... Crupina in Okanogan County at this time. Meadow Clary (salvia pratensis) ...
... Crupina in Okanogan County at this time. Meadow Clary (salvia pratensis) ...
class a noxious weeds
... Common Crupina (Crupina vulgaris) This Class A noxious weed is an annual that reproduces by seeds. It is a prolific seed producer, but the seeds only stay viable in the soil for about two years. It has purple flowers and can grow up to four feet tall. Stiff hairs can be found along the leaf margins ...
... Common Crupina (Crupina vulgaris) This Class A noxious weed is an annual that reproduces by seeds. It is a prolific seed producer, but the seeds only stay viable in the soil for about two years. It has purple flowers and can grow up to four feet tall. Stiff hairs can be found along the leaf margins ...
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.