• Study Resource
  • Explore Categories
    • Arts & Humanities
    • Business
    • Engineering & Technology
    • Foreign Language
    • History
    • Math
    • Science
    • Social Science

    Top subcategories

    • Advanced Math
    • Algebra
    • Basic Math
    • Calculus
    • Geometry
    • Linear Algebra
    • Pre-Algebra
    • Pre-Calculus
    • Statistics And Probability
    • Trigonometry
    • other →

    Top subcategories

    • Astronomy
    • Astrophysics
    • Biology
    • Chemistry
    • Earth Science
    • Environmental Science
    • Health Science
    • Physics
    • other →

    Top subcategories

    • Anthropology
    • Law
    • Political Science
    • Psychology
    • Sociology
    • other →

    Top subcategories

    • Accounting
    • Economics
    • Finance
    • Management
    • other →

    Top subcategories

    • Aerospace Engineering
    • Bioengineering
    • Chemical Engineering
    • Civil Engineering
    • Computer Science
    • Electrical Engineering
    • Industrial Engineering
    • Mechanical Engineering
    • Web Design
    • other →

    Top subcategories

    • Architecture
    • Communications
    • English
    • Gender Studies
    • Music
    • Performing Arts
    • Philosophy
    • Religious Studies
    • Writing
    • other →

    Top subcategories

    • Ancient History
    • European History
    • US History
    • World History
    • other →

    Top subcategories

    • Croatian
    • Czech
    • Finnish
    • Greek
    • Hindi
    • Japanese
    • Korean
    • Persian
    • Swedish
    • Turkish
    • other →
 
Profile Documents Logout
Upload
Lecture 8: Plant Evolution
Lecture 8: Plant Evolution

... 5. Asexual reproduction involves production of gemmae that disperse via raindrops or small animals a. Liverworts may also reproduce asexually by thallus branching D. Characteristics of Antherocerophyta 1. Members of phylum Antherocerophyta resemble liverworts but may not be closely related to them ...
Plant Structure and Function 2014using
Plant Structure and Function 2014using

... Anchors plant in soil Takes up water and minerals from soil ...
UMass Dartmouth Tree Guide
UMass Dartmouth Tree Guide

... consist of two outer pointed scales folded over 2 inner scales so that flower buds are weakly 4sided. They are short stalked. Probably the most conspicuous characteristic of flowering dogwood can be seen in May when the white bracts of the flower clusters develop. These look superficially like white ...
Assiut university researches Pharmacognostical Study Of Juglans
Assiut university researches Pharmacognostical Study Of Juglans

... monoecious, decidious tree. The male inflorescence occurs as drooping catkins, while female flowers are erect. The fruit is a large drupe like nut. The plant prefers temperate temperature, alluvial soil with moderate moisture content. I. Macromorphological study of Juglans nigra L.: a.The leaves : T ...
Large-Flowered Penstemon - Minnesota Board of Water and Soil
Large-Flowered Penstemon - Minnesota Board of Water and Soil

... millimeters long, dark brown, angular and irregularly shaped. Penstemon grandiflorus seeds are included in Minnesota state seed mix 35-221 “Dry Prairie General” and 35-621 “Dry Prairie Southeast.” As the seed requires cold stratification, it is most common to spread the seed in the fall to allow it ...
Broccoli - Portland Nursery
Broccoli - Portland Nursery

... seed beds with floating row cover.  Spray with Bt to stop infestation.  *Aphid damage often appears as curled, deformed or yellow leaves.  You may find colonies of green or  grey aphids on the undersides of the leaves and growing tips.  Also, sticky sap on leaves and stems and white  aphid skeletons ...
Leaf micromorphology and anatomy of Myrceugenia rufa
Leaf micromorphology and anatomy of Myrceugenia rufa

... waxes, which are highly sinuous and give to the leaf a rough and rugged appearance. The adaxial epidermal cells are irregularly rounded and the anticlinal cell walls are strongly sinuous. On this surface, some scattered hairs are observed growing through wax (Fig. 1 A). Hairs are 125 ± 15.2 μm long. ...
Photosynthesis Worksheet_Intro
Photosynthesis Worksheet_Intro

... ____________________________________________________________________ ____________________________________________________________________ 2. Where does photosynthesis occur? _________________________________________________________________ 3. What are chloroplasts and where are they found? _________ ...
Xanthorrhoea australis
Xanthorrhoea australis

... flowering, promotes earlier flowering and the production of more flowers. However, it is unusual, even with burning, for plants to produce flowers in two successive years. The capacity to flower directly after a fire before most other species have time to recover not only ensures a food source for m ...
Handbook for Identifying Prairie Plants
Handbook for Identifying Prairie Plants

... Grows 1.5 m tall and unbranched; stout central stem is usually covered with stiff short hairs; can be light green, but often red in the presence of bright sunlight; composite yellow flowers appear at the top of the plant, resembling small sunflowers; each flower is about 7-13 cm across, consisting o ...
VEGETATIVE ANATOMY AND FAMILIAL
VEGETATIVE ANATOMY AND FAMILIAL

... small green stipules, irregular in shape and with erose margins, may be found at least on younger plants at the base of each petiole (Fig. 7). These are consistently present, and do not contain any of the features of petiolar glands and thus must be considered stipules. ...
Chapter 18 Gymnosperms
Chapter 18 Gymnosperms

... 2. Microstrobili (male cones) are relatively small and they dry up and wither away shortly after shedding their pollen. The strobili consist of a central axis with pairs of microsporangia on the underside of microsporophylls. Within the immature microsporangia microsporocytes (microspore mother cel ...
Note that fungi are more closely related to animals than to plants.
Note that fungi are more closely related to animals than to plants.

... remain dormant for extended periods of time without germinating. • In seed plants, the gametophyte has become even more reduced -often tiny -- and cannot perform photosynthesis on its own. It is therefore completely dependent on the sporophyte phase. ...
a. characteristics of plants
a. characteristics of plants

... Plants photosynthesize, produce cellulose cell walls, are non-motile, have specialized tissues and organs, and can produce sexually. The aerial parts of most plants – stems and leaves – are coated with a waxy cuticle that prevents desiccation. Gas exchange occurs very slowly across the waxy surfaces ...
Micro Lab Unit 1 Flashcards
Micro Lab Unit 1 Flashcards

... Which tissues function in food storage, wound repair and structural support? Hemp is and example of which tissue cells bundled together to form very strong fibers for structural support? What tissue has protective layers? What tissue functions to transport water, minerals and food throughout the pla ...
State Grass and State Flower - California Native Grasslands
State Grass and State Flower - California Native Grasslands

... Upper early elementary: Students read the paragraph and complete the lesson. Lesson Objectives: Students will be able to identify and compare the roots, stems, leaves, and flowers on two different types of plants. Lesson Background: Additional background is included in the answer key. Purple needle ...
Planting and Identifying your Plants
Planting and Identifying your Plants

... young and becomes elongated with age. This cactus flowers after it reaches 15 inches in diameter, a process that can take more than 20 years; the plant will ultimately grow to four feet high and three feet wide. Native Americans used the hollowed out barrels of this cacti for cooking devices. The st ...
CHAPTER 1 Plants Grow and Change
CHAPTER 1 Plants Grow and Change

... The roots begin to grow down and the stem grows up. What are some ways plants may change? Plants change as they grow. They get larger, grow more stems and leaves, get thicker, and produce flowers or fruits that make seeds. ...
Diversity in the Plant Kingdom
Diversity in the Plant Kingdom

... 2. ☛Examine a Sphagnum leaf Sphagnum is known for its ability to hold large amounts of water--four times as much water as cotton can hold. (That’s why natives used Sphagnum in diapers, and why bogs are good natural flood-control areas.) There is something special about the leaf structure that enable ...
shining club moss bristly club moss crow’s foot
shining club moss bristly club moss crow’s foot

... like onion when crushed and they only occur in spring fruit cluster occurs on separate stem ...
2014 MG Core Course Plant Structure and Function
2014 MG Core Course Plant Structure and Function

... Angiosperms may be herbaceous (all vegetative tissue) like lettuce, woody like lindens or both like alfalfa. They may be deciduous (lose the vegetative foliage in autumn) as with maples, or evergreen where foliage remains on the plant for 2-3 years commonly as with pine trees. Botanically, conifers ...
Eucalypts of the Southern Tablelands Ecosystems Park
Eucalypts of the Southern Tablelands Ecosystems Park

... have been planted. The trees on Forest 20 are arranged in bands that represent an approximation to their landscape position in the Southern Tablelands. Dry forest species are grouped on the higher parts, open woodland species are in the middle and species found in areas that receive cold air drainag ...
A plant is a(an)
A plant is a(an)

... In bryophytes, haploid reproductive cells are produced by the 1. haploid stage. 2. diploid stage. 3. gametophyte and sporophyte. 4. all of the above ...
Hybridizing Lotuses
Hybridizing Lotuses

... lack of susceptibility to insects such as aphids, and adaptation to small containers. After a further 2 years of trial and propagation I have named some of the superior performers. Noteworthy New Hybrids ‘Embolene’ This is an intermediate sized plant which bears pink and white bicolor flowers that f ...
- The Aquila Digital Community
- The Aquila Digital Community

... 18 mm, the average ones being about 9 mm. The internode length may vary from a millimeter or less to over a centimeter. The rhizome bud is formed periodically in the axil of a scale leaf which arises on the lower surface of the rhizome (Figure 1B-E). The division of the rhizome apex is almost dichot ...
< 1 ... 119 120 121 122 123 124 125 126 127 ... 316 >

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.
  • studyres.com © 2026
  • DMCA
  • Privacy
  • Terms
  • Report