INTRODUCTION TO ASCLEPIAS CALIFORNICA The terrestrial plant‚ Asclepias californica‚ is the primary food source for Monarch butterflies. It can only germinate and produce seeds if provided with the proper environmental influence. The California milkweed’s population is spread out in the southern and coastal areas of California where there are flat lands and grassy slopes. It can also grow up to three feet tall and have clumps consisting of multiple stems that are a couple of feet in width. Unlike
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I’m Looking Over a White-Striped Clover: A Case of Natural Selection by Susan Evarts‚ Department of Biology‚ University of St. Thomas Alison Krufka‚ Department of Biological Sciences‚ Rowan University Chester Wilson‚ Department of Biology‚ University of St. Thomas Case Objectives By the end of this case‚ you will: • Understand the process of natural selection and the importance of environment-specific adaptations. • Be able to use the terms variation‚ adaptation‚ natural selection‚ and evolution
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Do Radish Seedlings Produce Allelopathic Chemicals? Do you ever feel that you need your own space? When you feel you want to get away from other people‚ you can walk away or leave the room. Plants and trees need their own space in order to obtain sufficient amounts of nutrients from the soil and sunlight. Plants‚ of course‚ are unable to move away. However‚ some plants use chemicals to keep other plants from growing too close. This process is called allelopathy. Some scientists believe that germinating
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THE BASICS OF SUPPLYING NUTRIENTS TO YOUR PLANTED AQUARIUM The environment within the aquarium and condition of the aquatic plant is not constant but changes over time. The aquatic plants will grow beautifully if you carefully select and add liquid fertilizer according to their condition. We will talk about what and when we should add to our planted aquarium in coming weeks. Part 1. Daily Supply Right after setup‚ the aquarium water contains excessive amounts of nitrogen and phosphorus. 2-3
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Xerophytes A xerophyte is a plant which has adaptations which allows it to live in an environment with little available moisture (the opposite being a hydrophyte). There are some adaptations that are typical of xerophytes‚ usually to reduce the rate of transpiration: A thick waxy cuticle: By having this‚ the plant can limit the amount of water lost through evaporation. If there is little available; why lose what you have? Its shiny surface is also reflective with regards to light‚ keeping the
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I hear birds chirping and twittering‚ singing a song. This makes me wonder about birds and where their songs come from. How ancient the song I am hearing really is. As I take a step into the forest‚ I notice at first the trees‚ stretching high above the ground‚ as if in competition with one another‚ to see who will reach the sky first. Their roots are long and strong‚ going deep under the ground‚ indicating that they have lived in the area for a long time‚ for centuries. As I look up
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Investigating Question: Does the concentration of salt in the water‚ affects the germination of the seed? Purpose: To see if the salinity of the water affects the germination of the seed‚ before its put into the soil. Back Ground Information: Seed germination is the sprouting or growth of a seed into the start of a plant. When environmental factors such as moisture‚ temperature‚ oxygen‚ and sometimes light are appropriate‚ a viable seed will begin to germinate. Salinity (salt-affected)
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Organic mulches help reduce erosion and conserve water. They also help moderate soil temperatures and discourage weeds‚ helping tomato plants grow larger and healthier. While it’s possible to buy commercial material for this purpose‚ converting fallen leaves into natural homemade mulch is both more environmentally friendly and less costly. Papaya leaves are an especially good choice due to their large size and potential insect-repellent abilities. Collection The average papaya leaf stays on the
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Purpose: In this experiment‚ the purpose was to have found out how different chemical solutions help or harm radish plant growth when the seeds of the radish plant are soaked in said solutions prior to planting. Background: The IRP project I am doing is based off the subject of seed germination. The seeds I will be planting are cherry belle radish seeds‚ freshly bought. Instead of planting the seeds in soil like it is normally done‚ the plant seeds will be placed on paper towels to grow for better
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Fixed 1. A thin cuticle. Cuticles primarily discourage water loss; thus most hydrophytes have no need for cuticles. 2. Stomata that are open most of time because water is abundant and therefore there is no need for it to be retained in the plant. This means that guard cells on the stomata are generally inactive. 3. An increased number of stomata‚ that can be on either side of leaves. 4. A less rigid structure: water pressure supports them. 5. Flat leaves on surface plants for
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