(rather than herbaceous) in that the sylem often displays secondary gr.pdf
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(rather than herbaceous) in that the sylem often displays secondary growth (widening of the trunk). They generelly have only tracheids for water conduction and lock vessel elements, which are characteristic of angiospems 1. Division: Cycadophyta Although there is only about 100 extant species of cycads, this phylum was significant during the Thassic period (248 million years ago). They are tropical and subtropical plants with trunk-fike stems and compound leaves and are popular as omamentals. These plants are dioecious in that seed cones and pollen cones are on two separate plants. Because of their palm-like structure, they are sometimes incorrectly descrbed as paim treces. However, lke other gymnosperms they produce oones and lack flowers. Examples of cycads include False king sago and Florida coonte (Zartia pumita). Zamia pumila is the only cycad native to the United States. ACTIVITY 1: Examine the live plant andior cones if available. (Use the atlas if necessary.) II. Division: Gnetophyta There are about 70 species of gnetophytes, which include tropical shrubs and vines. Some species (e.g. Ephedra, Wetwitschia) are found in deserts and other dry regions. Gnetophytes are believed to be the most closely related to flowering plants. They possess more efficient water-conducting cells (vessel elements) in their xylem, which is typical of angiosperms, but absent in the other gymnosperms. The leaves of gnetophytes are also similar to that of angiosperms and some species have flower-like structures. Gnetopytes are classified as gymnosperms primarily because their reproductive structures are cones (strobili)..
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10 major divisions of plants complete
This is a handout for our Bio 103: Fundamentals in Plant Biology. It enumerates the 10 major divisions of plant kingdom.
Mesozoic plants
The Mesozoic era saw changes in terrestrial vegetation, including the emergence of new plant genera. Gymnosperms like cycads and conifers dominated forests during this time. Ferns remained common but diversified. Angiosperms originated in the Mesozoic and began diversifying and replacing other plants. Cycads, ginkgo, and conifers were especially abundant during the Jurassic period. The Cretaceous saw the radiation and spread of angiosperms while other plants like ferns and gymnosperms continued to thrive.
Cp presentation christophe m af
Carnivorous plants have evolved specialized trapping mechanisms to obtain nutrients from the insects and small animals they capture. There are five main trapping types - pitfall traps like pitcher plants, flypaper traps with sticky secretions, snap traps that rapidly close like Venus flytraps, bladder traps that use suction, and lobster pot traps with inward-pointing hairs. Examples of carnivorous plants from around the world are described for each trap type, with details on their trapping mechanisms and habitats. Specific genera mentioned include Sarracenia, Nepenthes, Drosera, Utricularia, Dionaea, and Genlisea.
BIO
dctcufyvuuvvujxtctvjvthdnddtdtzx5ege5g 5 d dd gf y6cvrf ufyr y6th dy5dd 5ftyfcuyxdc dvr 6yf ugk iohlkhugjfghdgrszs sxbgfsxthdxhhyvb zsx rjtrjrtstzxc hd rd myjjhvjudhijshhsdxhygvjfghsgzxrtytxcufkydrjdfctfyggyyfgyftdfycfgugvhghcghgchgvghghcggcggcvhvgcgfxfzdsdsrdtdfygfguugffdftdtftygfgyycfdctuyvyvuvigghilcovvb iyu fyf fyf fy yfy f fkykhciv sdfukjfvfjvfhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh
Xerophytes
Xerophytes are plants adapted to survive in dry environments with low water availability. They have developed various morphological, anatomical, and physiological adaptations to either endure or avoid drought conditions. Their adaptations include extensive root systems to absorb water from deep in the soil, succulent stems and leaves that store water, reduced or absent leaves to minimize transpiration, and waxy coatings or hairs on leaves and stems to limit water loss. Xerophytes are classified into three main types - ephemeral annuals that complete their lifecycle rapidly to avoid dry periods, succulent xerophytes that store water in fleshy tissues to endure drought, and non-succulent perennials with adaptations like small leaves to resist dry conditions long
Cactus and succulents
This document provides information on cacti and succulents. It defines succulents and discusses their global distribution and ability to store water. It notes that cacti are succulents but not all succulents are cacti. The document outlines several succulent plant families and their taxonomic groups. It describes unique morphological features of cacti like tubercles, thorns, spines, prickles, areoles, ribs, cephaliums and fruit. It also discusses cactus shapes, propagation methods, uses for food and ornamentation, and psychoactive properties.
Kingdom Plantae
This document provides information on the classification of plants. It discusses the key characteristics of plants, including that they are multicellular organisms that can perform photosynthesis. Plants are classified into two main groups: non-vascular and vascular plants. Non-vascular plants like mosses lack transport tissues, while vascular plants have transport tissues and include seedless plants like ferns as well as seed-producing gymnosperms and angiosperms. The document goes on to describe several phyla of non-vascular and vascular plants.
1. Classification Of Weeds.pptx
The document classifies weeds in various ways:
1. By life span as annual, biennial, or perennial weeds. Annual weeds complete their life cycle in one year while biennials take two years and perennials live for more than two years.
2. By ecological affinities as wetland weeds that prefer wet areas, garden land weeds found in irrigated lands, and dry land weeds adapted to drought.
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dctcufyvuuvvujxtctvjvthdnddtdtzx5ege5g 5 d dd gf y6cvrf ufyr y6th dy5dd 5ftyfcuyxdc dvr 6yf ugk iohlkhugjfghdgrszs sxbgfsxthdxhhyvb zsx rjtrjrtstzxc hd rd myjjhvjudhijshhsdxhygvjfghsgzxrtytxcufkydrjdfctfyggyyfgyftdfycfgugvhghcghgchgvghghcggcggcvhvgcgfxfzdsdsrdtdfygfguugffdftdtftygfgyycfdctuyvyvuvigghilcovvb iyu fyf fyf fy yfy f fkykhciv sdfukjfvfjvfhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh
Xerophytes
Xerophytes are plants adapted to survive in dry environments with low water availability. They have developed various morphological, anatomical, and physiological adaptations to either endure or avoid drought conditions. Their adaptations include extensive root systems to absorb water from deep in the soil, succulent stems and leaves that store water, reduced or absent leaves to minimize transpiration, and waxy coatings or hairs on leaves and stems to limit water loss. Xerophytes are classified into three main types - ephemeral annuals that complete their lifecycle rapidly to avoid dry periods, succulent xerophytes that store water in fleshy tissues to endure drought, and non-succulent perennials with adaptations like small leaves to resist dry conditions long
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Kingdom Plantae
This document provides information on the classification of plants. It discusses the key characteristics of plants, including that they are multicellular organisms that can perform photosynthesis. Plants are classified into two main groups: non-vascular and vascular plants. Non-vascular plants like mosses lack transport tissues, while vascular plants have transport tissues and include seedless plants like ferns as well as seed-producing gymnosperms and angiosperms. The document goes on to describe several phyla of non-vascular and vascular plants.
1. Classification Of Weeds.pptx
The document classifies weeds in various ways:
1. By life span as annual, biennial, or perennial weeds. Annual weeds complete their life cycle in one year while biennials take two years and perennials live for more than two years.
2. By ecological affinities as wetland weeds that prefer wet areas, garden land weeds found in irrigated lands, and dry land weeds adapted to drought.
3. By soil type as weeds of black cotton soil, red soils, light/sandy soils, and laterite soils.
4. By place of occurrence as weeds of crop lands, pasture lands, and waste places.
Plant Phylogenetic Description
This document summarizes the major groups within the plant kingdom. It describes:
1) Non-vascular plants (bryophytes) including liverworts, hornworts, and mosses which were the earliest land plants but lacked tissues for transporting water and nutrients.
2) Vascular plants (tracheophytes) including lycophytes, horsetails, ferns and their allies which were the first to develop tissues allowing them to grow larger.
3) Seed plants (spermatophytes) including conifers, cycads, ginkgo, gnetae and flowering plants which advanced further with pollen and seeds, allowing for fertilization over long distances
Presentation2
Tracheophytes, or vascular plants, have specialized tissues called xylem and phloem that allow them to transport water and nutrients throughout the plant. They are divided into three classes: ferns, gymnosperms, and angiosperms. Ferns have vascular bundles and reproduce via spores, while gymnosperms like conifers and cycads reproduce using naked seeds. Angiosperms, which include flowering plants, have fruits containing seeds and complex vascular tissue.
Classification of Plants and Animals
This document provides classifications for various types of animals and plants. It divides animals into several phyla based on their characteristics, including chordates, molluscs, echinoderms, platyhelminths, nematodes, cnidarians, annelids, protozoa, arthropods, poriferans, and rotifers. It also describes key characteristics of classes within these phyla like reptiles, birds, mammals, fish, amphibians. Similarly, it categorizes plants into seedless vascular plants, non-vascular plants, and seeded vascular plants, outlining example types like ferns, horsetails, mosses, cycads, conifers, and flowering plants.
Liverworts
There are approximately 8,500 species of liverworts that reproduce via a gametophyte-dominant lifecycle and lack complex conducting tissue. Liverworts come in two main forms - thallose, which are ribbon-like, and leafy, with tiny leaves on hair-like stems. They are typically found in moist environments like damp soil, rotting logs, shaded stream banks, wet rocks, and along streams where water is generally available.
Evol and dist of woody plants
A woody plant is defined as a vascular plant that develops secondary xylem, also called wood. Wood is made of cellulose-reinforced cell walls in the xylem and provides strength. Woody plants evolved from seedless vascular plants and later gymnosperms in response to competition for light as plants colonized land. Today, all woody plants are seed plants, including both gymnosperms like conifers and angiosperm dicots. Woody plants are typically large perennials that develop wood, whereas non-woody plants are often herbaceous.
Ecology of bryophytes- Swapnil.pptx
This document summarizes the ecology of bryophytes. It discusses how bryophytes are found worldwide and occupy diverse habitats from soil, trees, rocks, and aquatic environments. It describes different life forms of bryophytes and their adaptations. Specific sections cover bryophyte ecology in different biomes and climates including tropical rainforests, deserts, polar regions, alpine areas, and their role as environmental indicators of pollution.
Hydrophytes
Plants can live in a wide variety of environments, from deep underwater to mountain tops. Hydrophytes, or aquatic plants, have adaptations that allow them to live fully or partially submerged in water bodies. These include thin cuticles, open stomata, increased stomata numbers, fewer structures due to buoyancy from water pressure, large flat leaves for flotation, air sacs for flotation and gas exchange, reduced roots as water can diffuse directly into leaves, and feathery or modified roots for oxygen uptake and anchoring. Cacti are succulent plants adapted to dry environments through water storage in stems, spines for protection and moisture retention, waxy cuticles, and CAM photosynthesis
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Weed classification Reproduction and dissemination
This document provides information on the classification, reproduction, and dissemination of weeds. It discusses various ways of classifying weeds based on morphology, life cycle, origin, and other factors. It also describes the sexual and asexual reproduction of weeds through seeds and vegetative structures. Finally, it mentions that weed seeds must disseminate to safe locations to germinate and establish as seedlings in order to pass on genetic material to future generations.
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Nonvascular plants lack true roots, stems, and leaves due to the absence of vascular tissue. They are called thallophytes and include mosses, liverworts, and hornworts. They must live in moist environments because they lack internal structures for transporting water and nutrients and generally only grow 1-2 cm tall. Vascular plants have specialized tissues for transport and include both spore-bearing plants like ferns and seed-bearing plants like gymnosperms and angiosperms. Gymnosperms produce naked seeds enclosed in cones while angiosperms produce seeds enclosed within flowers in an ovary.
Shoot System.pptx
This document discusses the morphology and modifications of plant stems. It describes the basic structure of stems and their functions of transport, storage, and vegetative propagation. Various stem modifications are outlined for different purposes like food storage (tubers, bulbs, corms), support (tendrils), protection (thorns), and climbing. Aerial modifications include climbers, phylloclades, cladodes, and thorns. Underground modifications are bulbs, corms, rhizomes, and tubers. The document also discusses stem branching patterns.
Who Said Plants Were Boring?
Plants are found everywhere on Earth except the arctic, most deserts, and deep ocean. There are over 250,000 known plant species that cannot move and must adapt to their environment through mechanisms like going dormant during unfavorable conditions. Plants reproduce through meristems at their tips and all plant cells are totipotent, allowing an entire new plant to form from a single cell. They utilize only water, light, and carbon dioxide to grow to immense sizes, with some trees over 100 meters tall and the oldest known plant being over 43,000 years old.
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The document summarizes many plant adaptations based on their environmental conditions. It discusses how desert plants store water and reduce water loss through waxy coatings, spines, and deep root systems. Grassland plants like those in savannas and prairies extend roots deep into the ground and have narrow leaves. Forest plants vary by region - tropical rainforest trees have buttresses and stilt roots, deciduous trees drop leaves, and coniferous trees have needle-like waxy leaves and shed snow well. Tundra plants are low-growing and have shallow roots to survive the harsh Arctic conditions. Overall, the document shows how plants have remarkably adapted to their environments to obtain water, sunlight, and reproduce.
B1.4 plants adaptation
Plants have developed various adaptations to survive in different environments. Some plants in cold climates are small, dark-colored, and have small waxy leaves or needles to minimize heat loss. Desert plants often have silver or hairy leaves to reflect sunlight, store water in stems or leaves, or have deep root systems to reach water underground. Adaptations help plants acquire resources and endure environmental stresses.
Survivaldesert2
Barrel cacti store water in their tissues that animals and some humans can access, though the cactus contains toxins. White-winged doves survive desert conditions through a plump body that reduces moisture loss and insulates from temperature extremes, and they can go several days without water. Saguaros provide shelter and food for other animals in the Sonoran Desert and can store large amounts of water in their tissues to last through dry periods.
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There are over 30,000 weed species worldwide that can be classified in various ways. Weeds can be classified based on their life span as annual, biennial, or perennial. They can also be classified based on their root system as shallow rooted or deep rooted perennials. Other classifications include how they reproduce, their place of occurrence, the nature of their stem, their origin, and more. Classifying weeds allows for adopting targeted weed management methods for particular weed groups.
plants adaptations
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Hydrophytes and xerophytes
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#2. Xerophytes develop thick cuticles, sunken stomata, hair coverage, rolling leaves, reduced leaf surface area, and water storage tissues.
#3. Hydrophytes have thin cuticles, air chambers for gas exchange and buoyancy, and absorb water through their entire surfaces.
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Plant Phylogenetic Description
This document summarizes the major groups within the plant kingdom. It describes:
1) Non-vascular plants (bryophytes) including liverworts, hornworts, and mosses which were the earliest land plants but lacked tissues for transporting water and nutrients.
2) Vascular plants (tracheophytes) including lycophytes, horsetails, ferns and their allies which were the first to develop tissues allowing them to grow larger.
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Tracheophytes, or vascular plants, have specialized tissues called xylem and phloem that allow them to transport water and nutrients throughout the plant. They are divided into three classes: ferns, gymnosperms, and angiosperms. Ferns have vascular bundles and reproduce via spores, while gymnosperms like conifers and cycads reproduce using naked seeds. Angiosperms, which include flowering plants, have fruits containing seeds and complex vascular tissue.
Classification of Plants and Animals
This document provides classifications for various types of animals and plants. It divides animals into several phyla based on their characteristics, including chordates, molluscs, echinoderms, platyhelminths, nematodes, cnidarians, annelids, protozoa, arthropods, poriferans, and rotifers. It also describes key characteristics of classes within these phyla like reptiles, birds, mammals, fish, amphibians. Similarly, it categorizes plants into seedless vascular plants, non-vascular plants, and seeded vascular plants, outlining example types like ferns, horsetails, mosses, cycads, conifers, and flowering plants.
Liverworts
There are approximately 8,500 species of liverworts that reproduce via a gametophyte-dominant lifecycle and lack complex conducting tissue. Liverworts come in two main forms - thallose, which are ribbon-like, and leafy, with tiny leaves on hair-like stems. They are typically found in moist environments like damp soil, rotting logs, shaded stream banks, wet rocks, and along streams where water is generally available.
Evol and dist of woody plants
A woody plant is defined as a vascular plant that develops secondary xylem, also called wood. Wood is made of cellulose-reinforced cell walls in the xylem and provides strength. Woody plants evolved from seedless vascular plants and later gymnosperms in response to competition for light as plants colonized land. Today, all woody plants are seed plants, including both gymnosperms like conifers and angiosperm dicots. Woody plants are typically large perennials that develop wood, whereas non-woody plants are often herbaceous.
Ecology of bryophytes- Swapnil.pptx
This document summarizes the ecology of bryophytes. It discusses how bryophytes are found worldwide and occupy diverse habitats from soil, trees, rocks, and aquatic environments. It describes different life forms of bryophytes and their adaptations. Specific sections cover bryophyte ecology in different biomes and climates including tropical rainforests, deserts, polar regions, alpine areas, and their role as environmental indicators of pollution.
Hydrophytes
Plants can live in a wide variety of environments, from deep underwater to mountain tops. Hydrophytes, or aquatic plants, have adaptations that allow them to live fully or partially submerged in water bodies. These include thin cuticles, open stomata, increased stomata numbers, fewer structures due to buoyancy from water pressure, large flat leaves for flotation, air sacs for flotation and gas exchange, reduced roots as water can diffuse directly into leaves, and feathery or modified roots for oxygen uptake and anchoring. Cacti are succulent plants adapted to dry environments through water storage in stems, spines for protection and moisture retention, waxy cuticles, and CAM photosynthesis
Kingdom plantae
Kingdom Plantae is further classified on the basis of characteristics like absence or presence of seeds, vascular tissues, differentiation of plant body, etc.
Plant Adaptation
Plants have developed many adaptations to survive in different environments such as deserts and rainforests. Cacti store water in their thick stems to survive dry desert conditions. Dandelions have deep taproots to access water underground, and their seeds are well-adapted to wind dispersal. Lianas are vines that climb trees in rainforests to reach sunlight, while epiphytes grow on trees to take advantage of the canopy. Desert plants like cacti and xerophytes reduce water loss through small or absent leaves and waxy coatings, and store water in thick tissues. They also have extensive root systems to draw water from deep underground or spread near the surface.
Weed classification Reproduction and dissemination
This document provides information on the classification, reproduction, and dissemination of weeds. It discusses various ways of classifying weeds based on morphology, life cycle, origin, and other factors. It also describes the sexual and asexual reproduction of weeds through seeds and vegetative structures. Finally, it mentions that weed seeds must disseminate to safe locations to germinate and establish as seedlings in order to pass on genetic material to future generations.
project in science
Nonvascular plants lack true roots, stems, and leaves due to the absence of vascular tissue. They are called thallophytes and include mosses, liverworts, and hornworts. They must live in moist environments because they lack internal structures for transporting water and nutrients and generally only grow 1-2 cm tall. Vascular plants have specialized tissues for transport and include both spore-bearing plants like ferns and seed-bearing plants like gymnosperms and angiosperms. Gymnosperms produce naked seeds enclosed in cones while angiosperms produce seeds enclosed within flowers in an ovary.
Shoot System.pptx
This document discusses the morphology and modifications of plant stems. It describes the basic structure of stems and their functions of transport, storage, and vegetative propagation. Various stem modifications are outlined for different purposes like food storage (tubers, bulbs, corms), support (tendrils), protection (thorns), and climbing. Aerial modifications include climbers, phylloclades, cladodes, and thorns. Underground modifications are bulbs, corms, rhizomes, and tubers. The document also discusses stem branching patterns.
Who Said Plants Were Boring?
Plants are found everywhere on Earth except the arctic, most deserts, and deep ocean. There are over 250,000 known plant species that cannot move and must adapt to their environment through mechanisms like going dormant during unfavorable conditions. Plants reproduce through meristems at their tips and all plant cells are totipotent, allowing an entire new plant to form from a single cell. They utilize only water, light, and carbon dioxide to grow to immense sizes, with some trees over 100 meters tall and the oldest known plant being over 43,000 years old.
Plant adaptations (teach)
The document summarizes many plant adaptations based on their environmental conditions. It discusses how desert plants store water and reduce water loss through waxy coatings, spines, and deep root systems. Grassland plants like those in savannas and prairies extend roots deep into the ground and have narrow leaves. Forest plants vary by region - tropical rainforest trees have buttresses and stilt roots, deciduous trees drop leaves, and coniferous trees have needle-like waxy leaves and shed snow well. Tundra plants are low-growing and have shallow roots to survive the harsh Arctic conditions. Overall, the document shows how plants have remarkably adapted to their environments to obtain water, sunlight, and reproduce.
B1.4 plants adaptation
Plants have developed various adaptations to survive in different environments. Some plants in cold climates are small, dark-colored, and have small waxy leaves or needles to minimize heat loss. Desert plants often have silver or hairy leaves to reflect sunlight, store water in stems or leaves, or have deep root systems to reach water underground. Adaptations help plants acquire resources and endure environmental stresses.
Survivaldesert2
Barrel cacti store water in their tissues that animals and some humans can access, though the cactus contains toxins. White-winged doves survive desert conditions through a plump body that reduces moisture loss and insulates from temperature extremes, and they can go several days without water. Saguaros provide shelter and food for other animals in the Sonoran Desert and can store large amounts of water in their tissues to last through dry periods.
2.weeds and weeds classification By Allah Dad Khan
There are over 30,000 weed species worldwide that can be classified in various ways. Weeds can be classified based on their life span as annual, biennial, or perennial. They can also be classified based on their root system as shallow rooted or deep rooted perennials. Other classifications include how they reproduce, their place of occurrence, the nature of their stem, their origin, and more. Classifying weeds allows for adopting targeted weed management methods for particular weed groups.
plants adaptations
Cacti and dandelions have adapted thick stems and deep taproots respectively to store water for long periods of time in arid environments. Lianas climb trees to reach sunlight, while epiphytes grow on trees to take advantage of sunlight and canopy cover. Desert plants like cacti and xerophytes have adapted through physical traits like thick cuticles and hidden stomata or behaviors like dropping leaves to reduce water loss. Phreatophytes draw water from deep underground, while some plants like the ocotillo go dormant during dry periods.
Hydrophytes and xerophytes
#1. Xerophytes and hydrophytes have anatomical adaptations to reduce water loss and absorb water efficiently.
#2. Xerophytes develop thick cuticles, sunken stomata, hair coverage, rolling leaves, reduced leaf surface area, and water storage tissues.
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proteinaria (in=1), and relocated (n=2). Adapted from: Project PrEPare (ATN082): The
Acceptability and Feasibility of an HIV PreExposure Prophylaxis (PrEP) Trial with Young Men
who Have Sex with Men (YMSM). Hosek et al. (2013). J Acquir Immune Defic Syndr.
Background: This study examined the feasibility of a combination prevention intervention for
young men who have sex with men (YMSM), an anticipated target population for Tenofovir
disoproxil fumarate/ emtricitabine (TDF/FTC) as HIV pre-exposure prophylaxis (PrEP).
Methods: Project PrEPare, a pilot study using a 3-arm design, compared an efficacious
behavioral HIV-prevention intervention (3MV) alone, 3MV combined with PrEP, and 3MV
combined with placebo. Eligible participants were 18-22-year-old HIV-uninfected men who
reported unprotected anal intercourse (UAI) in the past year. Participants were screened for
preliminary eligibility at youth venues and community organizations and were also referred
through social networks. Laboratory screening determined final eligibility. Behavioral and
biomedical data were collected at baseline and every 4 weeks thereafter for 24 weeks. a. Based
on the study diagram and description above, what type of study is this? Be as specific as you can
and explain why you chose your answer. b. What study procedure most clearly differentiates a
prospective cohort study from a randomized (experimental) trial in humans? c. If the eligibility
criteria for an experimental study exclude many individuals in the population with the disease or
risk factor of interest, what characteristic of the trial may be compromised? d. Name two
disadvantages of experimental studies. e. What are the two main reasons for randomization?.
(42) How does a monopoly maintain its monopoly 433- What is a natural.pdf
(42) How does a monopoly maintain its monopoly 433. What is a natural monopoly and what
does its long term cost curve do (4) What is the profit maximizing solution for a monopolist (find
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Know (graphically) consumer/producer/deadweight loss of a monopoly (46) What is price
discrimination.
(1) What is technology and how does it relate to a firm's PPF (or its.pdf
(1) What is technology and how does it relate to a firm's PPF (or its output of goods and
services) (12) Regarding a Firm What is its short-run What is its long-run (13) What are the
differences in economic and accounting profits (14) Understand the relationship between
marginal and average product (numeric and graphical).
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input will be 4 bits that can take the value from 0 to F . When you simulate use counter for the
input that counts from 0 to F . (Attach full screenshot for the codes) (Attach full screenshots for
the waveform).
- Study the sample financial statements document uploaded on Canvas- N.pdf
- Study the sample financial statements document uploaded on Canvas: NASDAQ STRL
2021.pdf - Pay special attention to Item 8. Financial Statements and Supplementary Data in the
document. - Based on the details in the document and the class presentation, find in the
document how the following line items' TOTALS have been calculated: 1. Assets 2. Liabilities 3.
Owner's Equity 4. Revenues 5. Expenses 6. Profit Dlease document your findings in a
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#include -sys-types-h- #include -stdio-h- #include -unistd-h- #define.pdf
#include <sys/types.h>
#include <stdio.h>
#include <unistd.h>
#define SIZE 5
int nums[SIZE] = {0,1,2,3,4};
int main()
{
int i;
pid_t pid;
pid = fork();
if (pid == 0)
{
for (i = 0; i < SIZE; i++)
{
nums[i] *= -i;
printf("CHILD: %d ",nums[i]); /* LINE X */
}
}
else if (pid > 0)
{
wait(NULL);
for (i = 0; i < SIZE; i++)
printf("PARENT: %d ",nums[i]); /* LINE Y */
}
return 0;
}
Briefly explain the result..
- 1- T or F-Current liabilities are separated from long term liabiliti.pdf
- 1. T or F-Current liabilities are separated from long term liabilities on the balance sheet? - 2. T
or F - Interest is payable on the entire line of credit regardless whether it is used? - 3. T or F-
GST, HST and PST are all recoverable taxes? - 4. T or F-You can combine HST payable and
recoverable when remitting your return? - 5. T or F-You include accrued interest payable in the
long term debt balance? - 6. T or F-Companies should accrue vacation pay when earned?.
(Stock dividends) In the spring of 2016- the CFO of HTPL Distributing.pdf
(Stock dividends) In the spring of 2016, the CFO of HTPL Distributing Company decided to distribute a stock dividend
to its shareholders. Specifically, the CFO proposed that the company pay 0.045 shares of stock to the holders of
each share of common stock such that the holder of 1,000 shares of stock would receive an additional 45 shares of
common stock..
(This task uses Strings-) A program that prompts the user for their pa.pdf
(This task uses Strings:) A program that prompts the user for their party affiliation (Democrat,
Republican, or Independent) and responds accordingly with a Donkey, Elephant, Person, or
Other. (i.e. "You get a Democratic Donkey.") Notes: create a menu so the user chooses D, R, or I
and assume that any other choice will be Other. Tests: just the four options D, R, I, Other. Use as
cascaded if structure not separate if statements! Test runs: (insert the output widow copies here
for the 4 test runs).
(Python) A variable defined inside a function is a local variable- oth.pdf
(Python)
A variable defined inside a function is a local variable; otherwise, it is a global variable.
If a local variable has the same name as a global variable, the local variable is used inside the
function.
What does this print?
def myFunc1 ():
one = -1
print (one, two)
one = 1
two = 2
print (one, two)
myFunc1 ()
print (one two).
(Python) Create a function that can take in either a list or a diction.pdf
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Create a function that can take in either a list or a dictionary
as its first parameter, and a searchTerm as its second parameter.
If the searchTerm is found inside of a list, print out the index of the searchTerm
If the searchTerm is found inside of a dictionary, print the result.
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(Python)
Create a function that prints the number of Keys and Values in a input parameter
representing a dictionary as follows: "There are <x> Keys, and <y> Values".
If any other type of object besides a dictionary is
passed in, print "You must pass in a valid dictionary object"..
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(In C++) In a linked list containing student names (string) and their.pdf
(In C++) In a linked list containing student names (string) and their individual ages (int):
1) Create a method that prints the student names in decreasing order (based on their ages)
2) Create another method that prints the student names in lexicographical order (For example,
the name James prints before John).
(Multiple answers) Choose all of the following that are considered ris.pdf
(Multiple answers) Choose all of the following that are considered risk factors for CVD: LDL
160 mg / dL or higher total blood cholesterol above 200 mg / dL . triglycerides greater than 150
mg / dL vigorous exercise HTN HDL higher than 60 mg / dL.
(Multiple answers) Choose all that are risk factors for CVD- HTN famil.pdf
(Multiple answers) Choose all that are risk factors for CVD: HTN family history blood
cholesterol > 200 HDL > 60 vigorous exercise.
(ii) There were 500 insects in the total population- In this populatio.pdf
(ii) There were 500 insects in the total population. In this population, 300 insects had the
genotype C M C M , 150 had the genotype C M C N and 50 had the genotype C N C N .
Calculate the actual frequency of the allele C N by using these figures. Show your working.
Answer (iii) Use your answer to (c) (ii) and the Hardy-Weinberg equation to calculate the
number of insects that would be expected to have the genotype C N C N ..
(i) When the savings rate is 1-3- what is the fiscal multiplier (you c.pdf
(i) When the savings rate is 1/3, what is the fiscal multiplier (you can ignore taxes)? What is the
multiplier when the savings rate is 1/5? Explain what this means for an increase in government
spending (G).
(ii) In general, how does an increase in savings affect the effectiveness of fiscal policy and the
recovery?
(iii) What are the opportunities and threats?
Fiscal policy that the marginal propensity to save is linked to the fiscal multiplier..
(In java) Create a method to delete a node at a particular position i.pdf
(In java)
Create a method to delete a node at a particular position in the linked list AND
Create a method to insert a node at the tail/end of a linked list.
I have these methods that should be manipulated to achieve the methods above:
- Method for inserting a node at a particular position:
public listnodes insertAtPosition(listnodes head,int data,int position){
listnodes newnode=new listnodes(data,null);//create the newnode
listnodes previous=head;
int count=1;
while(count<=position-1) {//reach to a particular position count<position(nodeadded before)
previous=previous.link; /*if the condition in while is true that means not the
position where ypu want to add the node so go to next position*/
count++;
}
//when the condition is false, position is found
listnodes current=previous.link;
newnode.link=current;
previous.link=newnode;
return head;
}
- Method to delete the last node in a linked list:
public listnodes deletelast(listnodes head){
listnodes cur=head;
listnodes previouscur=head;
while(cur.link!=null){//traverse till the last node
previouscur=cur;
cur=cur.link;
}
previouscur.link=null;//disconnect the last node
return cur;
}
- Method to insert a node at the beginning of a linked list:
public listnodes insertnode(int data,listnodes head){
//create a new node to be added in the beginning of the linked list
listnodes newnode=new listnodes(data,null);
//link the new node to the head node
newnode.link=head;
//make the new node as the front node
head=newnode;
return head;
}.
(Exercise 3-- See pages 24+40 of Interpreting earth History (A manual.pdf
(Exercise 3., See pages 24 + 40 of Interpreting earth History (A manual in Historical Geplogyi) 1
I point Match the teins with the ir defiritions. sitictastic shape Mortine: i leavie.
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