Plants Review
... Root cap: protects meristem as it pushes through soil; also secretes polysaccharide lubricant ...
... Root cap: protects meristem as it pushes through soil; also secretes polysaccharide lubricant ...
Warm-Up
... Root cap: protects meristem as it pushes through soil; also secretes polysaccharide lubricant ...
... Root cap: protects meristem as it pushes through soil; also secretes polysaccharide lubricant ...
The Plant Body
... vascular and ground tissue systems These tissue systems are continuous throughout the plant and connect the organs The dermal tissue system is the outer protective covering of the plant – usually a single layer of tightly packed cells called the epidermis The vascular tissue system contains xylem & ...
... vascular and ground tissue systems These tissue systems are continuous throughout the plant and connect the organs The dermal tissue system is the outer protective covering of the plant – usually a single layer of tightly packed cells called the epidermis The vascular tissue system contains xylem & ...
AP Biology
... apical root meristem growth in length primary growth lateral meristem growth in girth secondary growth AP Biology ...
... apical root meristem growth in length primary growth lateral meristem growth in girth secondary growth AP Biology ...
Growth and development
... • Plant need to coordinate their growth and development and tune their development to that of their environment. • In order to do this, they produce chemicals which are effective at low concentration which are moved around the plant. • This definition is characteristic of animal hormones. A better p ...
... • Plant need to coordinate their growth and development and tune their development to that of their environment. • In order to do this, they produce chemicals which are effective at low concentration which are moved around the plant. • This definition is characteristic of animal hormones. A better p ...
BIOC31 H3 Plant Development and Biotechnology Winter 2015
... (http://www.governingcouncil.utoronto.ca/policies/behaveac.htm) outlines the behaviours that constitute academic dishonesty and the processes for addressing academic offences. Potential offences include, but are not limited to: IN PAPERS AND ASSIGNMENTS: Using someone else’s ideas or words without a ...
... (http://www.governingcouncil.utoronto.ca/policies/behaveac.htm) outlines the behaviours that constitute academic dishonesty and the processes for addressing academic offences. Potential offences include, but are not limited to: IN PAPERS AND ASSIGNMENTS: Using someone else’s ideas or words without a ...
Plant Review - cloudfront.net
... 23. Name and write the equation of the process that plants are a part of that exchanges two types of gases in the leaf of a plant. ...
... 23. Name and write the equation of the process that plants are a part of that exchanges two types of gases in the leaf of a plant. ...
3U 4.1 Vascular Plant Structure and Function PDF
... into tissues, tissue systems, organs, and organ systems that enable the plants to carry out the basic processes of life such as photosynthesis, distribution and storage of carbohydrates, growth, and reproduction. ...
... into tissues, tissue systems, organs, and organ systems that enable the plants to carry out the basic processes of life such as photosynthesis, distribution and storage of carbohydrates, growth, and reproduction. ...
The Shoot System
... Stems and branches could be hard and woody e.g. coconut trees, mango trees, avocado trees, orange trees. They can also be herbaceous (soft) e.g. rice, beans, tomatoes, sweet peppers, cucumber, sweet potatoes. ...
... Stems and branches could be hard and woody e.g. coconut trees, mango trees, avocado trees, orange trees. They can also be herbaceous (soft) e.g. rice, beans, tomatoes, sweet peppers, cucumber, sweet potatoes. ...
Asexual Reproduction in Plants
... formation and budding It involves only one parent and offspring are genetically identical (have the same genetic content) to the parent ...
... formation and budding It involves only one parent and offspring are genetically identical (have the same genetic content) to the parent ...
Chapter 5 Vocabulary- From Bacteria to Plants
... Phloem: the vascular tissue through which food moves in some plants (pg. 141) Xylem: the vascular tissue through which water and nutrients move in some plants (pg. 141) Seed: the plant structure that contains a young plant inside a protective covering (pg. 142) Embryo: the young plant that develops ...
... Phloem: the vascular tissue through which food moves in some plants (pg. 141) Xylem: the vascular tissue through which water and nutrients move in some plants (pg. 141) Seed: the plant structure that contains a young plant inside a protective covering (pg. 142) Embryo: the young plant that develops ...
Chapter 9 - biology4friends
... elements that have pores at their ends to allow continuous movement. Companion cells are alive and provide the ATP necessary for the active transport that occurs in the phloem tissue. 17 Plants show indeterminate growth because of their meristematic tissue. Apical meristems occur at the tips of root ...
... elements that have pores at their ends to allow continuous movement. Companion cells are alive and provide the ATP necessary for the active transport that occurs in the phloem tissue. 17 Plants show indeterminate growth because of their meristematic tissue. Apical meristems occur at the tips of root ...
Plant architecture
... later flowers (Figure 2A). This growth behaviour is referred to as monopodial (Schmitz and Theres, 1999). In contrast, the SAM of plants from the Solanaceae family (e.g. tomato) is determinate, i.e. it terminates in a single flower, and development continues from lateral meristems. This growth behav ...
... later flowers (Figure 2A). This growth behaviour is referred to as monopodial (Schmitz and Theres, 1999). In contrast, the SAM of plants from the Solanaceae family (e.g. tomato) is determinate, i.e. it terminates in a single flower, and development continues from lateral meristems. This growth behav ...
Plant Tissues
... •Secretes polysaccharide slime that lubricates the soil •Constantly sloughed off and replaced Apical Meristem •Region of rapid cell division of undifferentiated cells •Most cell division is directed away from the root cap Quiescent Center •Populations of cells in apical meristem which reproduce much ...
... •Secretes polysaccharide slime that lubricates the soil •Constantly sloughed off and replaced Apical Meristem •Region of rapid cell division of undifferentiated cells •Most cell division is directed away from the root cap Quiescent Center •Populations of cells in apical meristem which reproduce much ...
Table of Contents - Milan Area Schools
... Plant Tissues and Tissue Systems • The dermal tissue system is the outer covering of the plant. • The epidermis contains epidermal cells and other specialized cells such as guard cells. • The shoot epidermis secretes a layer of waxcovered cutin, the cuticle, which helps retard water loss from stems ...
... Plant Tissues and Tissue Systems • The dermal tissue system is the outer covering of the plant. • The epidermis contains epidermal cells and other specialized cells such as guard cells. • The shoot epidermis secretes a layer of waxcovered cutin, the cuticle, which helps retard water loss from stems ...
Plant Science HL
... • Happens when male and female sex cells unite to make a gamete. • The loss of water vapor from leaves and other openings. • The outer most layer that protects against water loss and insect invasion. • The three female part of an angiosperm. • Plants that flower without regard to day length. • The c ...
... • Happens when male and female sex cells unite to make a gamete. • The loss of water vapor from leaves and other openings. • The outer most layer that protects against water loss and insect invasion. • The three female part of an angiosperm. • Plants that flower without regard to day length. • The c ...
I Love Plants!
... – Those who die in two years are called biannuals. – Those who live many years are called perennials. ...
... – Those who die in two years are called biannuals. – Those who live many years are called perennials. ...
Parts of a Plant
... root cap - a structure at the ends (tips) of the roots. It covers and protects the apicalmeristem (the actively growing region) of the root. stem - (also called the axis) is the main support of the plant. tap root - the main root of some plants; the tap root extends straight down under the plant. te ...
... root cap - a structure at the ends (tips) of the roots. It covers and protects the apicalmeristem (the actively growing region) of the root. stem - (also called the axis) is the main support of the plant. tap root - the main root of some plants; the tap root extends straight down under the plant. te ...
Seed Plant Structure and Function
... • In plants, the formation of new cells, tissues and organs is restricted almost entirely to regions known as meristems ...
... • In plants, the formation of new cells, tissues and organs is restricted almost entirely to regions known as meristems ...
Vegetative Parts
... – Spongy cells are rounded and irregular and loosely packed with a lot of air spaces for movement of gases. Less photosynthesis ...
... – Spongy cells are rounded and irregular and loosely packed with a lot of air spaces for movement of gases. Less photosynthesis ...
Diversity of Plants
... Vascular: have vessels to transport food and water. They have roots, stems and leaves. Example: Grass, corn, trees, flowers, bushes ...
... Vascular: have vessels to transport food and water. They have roots, stems and leaves. Example: Grass, corn, trees, flowers, bushes ...
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.