Wednesday, 29 February 2012
Plant Parts
http://www.mbgnet.net/bioplants/parts.htmlPlant Parts
What Do Different Plant Parts Do?Plant parts do different things for the plant.RootsRoots act like straws absorbing water and minerals from the soil. Tiny root hairs stick out of the root, helping in the absorption. Roots help to anchor the plant in the soil so it does not fall over. Roots also store extra food for future use.StemsStems do many things. They support the plant. They act like the plant's plumbing system, conducting water and nutrients from the roots and food in the form of glucose from the leaves to other plant parts. Stems can be herbaceous like the bendable stem of a daisy or woody like the trunk of an oak tree.
LeavesMost plants' food is made in their leaves. Leaves are designed to capture sunlight which the plant uses to make food through a process called photosynthesis.FlowersFlowers are the reproductive part of most plants. Flowers contain pollen and tiny eggs called ovules. After pollination of the flower and fertilization of the ovule, the ovule develops into a fruit.FruitFruit provides a covering for seeds. Fruit can be fleshy like an apple or hard like a nut.SeedsSeeds contain new plants. Seeds form in fruit.
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Tuesday, 28 February 2012
Tuesday, 21 February 2012
Photosynthesis - Plants make their own food.
Photosynthesis for Kids
Going by the simplest possible definition, photosynthesis is the process by which plants convert the carbon dioxide into their food, with the help of the energy derived from the Sun. The most essential components of this process include direct sunlight, water, carbon dioxide and chlorophyll. Other than the plants, even some algae and bacteria species resort to this process in order to generate food. That, however, doesn't mean that only these plants and organisms benefit from this process. Various other living beings, including humans are either direct or indirect beneficiaries of the process of photosynthesis.
http://www.buzzle.com/articles/photosynthesis-for-kids.html
What's a plant?
What Makes a Plant?
What do they all have in common? The big thing that connects plants is photosynthesis. Photosynthesis is the process that allows plants to take energy from the Sun and create sugars. Not all plants go through the process of photosynthesis. As with all of biology, there are exceptions and you may learn about plant species that are parasites. Plants also have cell walls. In the cells tutorials we explained that all cells have a membrane. Only plants have an additional cell wall made from cellulose.Let's look at photosynthesis. Plants are able to turn sunlight into energy but not directly. Plants are actually able to store energy in some chemical bonds that can be used later. Before we get into details, we'll explain that there are two processes on Earth: Photosynthesis and Respiration. Photosynthesis stores the energy and respiration releases that energy. It all starts with the Sun.
http://www.biology4kids.com/files/plants_main.html
Shoots
SHOOTS ABOVE GROUND
Sure we said that there are some roots above the surface, but the majority of the plant you see is made up of stems and leaves. Think about a tree. The stems are the trunks and branches. Leaves are self-explanatory. Stems are all about transporting food and water and acting as support structures. Leaves are all about photosynthesis, creating food molecules and absorbing carbon dioxide for the plant. These parts are connected by the vascular system of xylem and phloem that spreads through the entire plant.http://www.biology4kids.com/files/plants_structure.htm
Roots
THE ROOTS BELOW GROUND
We'll start at the bottom with the roots. These structures are designed to pull water and minerals from whatever material the plant sits on. For water plants, the roots may be in the water. For traditional trees, the roots go deep into the soil. There are even plants called epiphytes that live in trees and their root system clings to branches. Humans often capitalize on the roots of plants for food.Carrots are just one big orange root.
Root systems also provide support for plants in the form of an anchor in the soil. If the wind blows hard, those roots keep the plant from falling over. Some plant species have roots above ground that provide support for the entire plant. Roots are further broken down into the primary root and lateral roots that each has apical meristem at their tips. Root hairs are also a common structure on roots. They make the roots look fuzzy and help in the absorption of water and nutrients.
http://www.biology4kids.com/files/plants_structure.html
Saturday, 4 February 2012
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