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The Plant Kingdom
Transcript of The Plant Kingdom
In order for a plant to live they need adaptations such as obtaining water and other nutrients, retaining water, transporting materials, support, and finally reproduction.
What is a Plant?
Adaptations for living on land
Obtaining water and other Nutrients
Origin of plants
What Is a Plant
A plant is an autotroph that is surrounded by a cell wall and is a eukaryote.
Obtaining food and other Nutrients
Every plant must be able to transport Water, Minerals, food, and other materials to other parts of the organism.The way it works is the water and minerals are taken up from the bottom part of the plant through the stem, and the food is made at the top. larger plants need a Vascular tissue to help transport from one part of the plant to another. Vascular tissue is a system of tubelike structures inside a plant through which water, minerals, and food move.
The Plant Kingdom
Organisms need water to survive. But for a plant to live on land they need a way to obtain water and food from the soil. One way plants obtain water and other nutrients from the soil is by their roots.
& Taha Alhadi
Plants need a way to keep the water they obtain, because without it they would dry up due to evaporation. When water in the cell is more than water in the air it leaves the cell and enters the air. The cuticle is one adaptation that helps the plant reduce water loss.
In order for a plant to live it needs support. Large plants must be exposed to as much sunlight as possible because they need many nutrients for their vascular tissue. They need nutrients because they need to have strong vascular tissues to support their bodies.
All plants undergo sexual reproduction that involves fertilization, the joining of a sperm cell with an egg cell. The fertilized egg is called a zygote. For some algae and some plants, fertilization can occur if there is water in the environment because the sperm cells of these plants through water to the egg cell.
Scientists informally group plants into two major group---Vascular and non-vascular plants.
Plants that lack a well-developed system of tubes for transporting water and other minerals are known as non-vascular plants. Non-vascular plants are low growing and do not have roots for absorbing water from the ground. Instead, they obtain water and materials directly from their surroundings. Non-vascular plants have only thin cell walls to provide support. This is one reason these plants cannot grow more a few centimeters tall.
Plants with true vascular tissue are called vascular plants.Thier well developed Vascular tissue solves the problem of transport, moving materials quickly and effectively throughout the plants body. Vascular tissue also provides strength, stability, and support to a plant. This is why these plants can grow so tall.
Origin of Plants
Better clues to the origin of plants came from comparing the chemicals in modern plants to those in other organisms. In particular, biologists studied the green pigment chlorophyll, found in the chloroplast of plant, algae, and some bacteria. Land plants and green algae contain some forms of chlorophyll. This evidence led biologists to infer that ancient green algae were the ancestors of today's plants.
Complex life cycles
Plants have complex life cycles that include tow different stages, the sprophyte stage and the gametophyte stage.
In the sporophyte stage, the plant produce spores, tiny cells that can grow into new organisms. A spore develops into a new organism in the other stage which is the gametophyte stage.
In the gametophte stage, the plant produces tow kinds of sex cells: sperm cell and egg cells