Search results
How are cells structured? Learn about the size and function of plant and animal cells for GCSE Combined Science, AQA.
- Comparing Sizes
Sizes can be compared using a straightforward calculation....
- Eukaryotes and Prokaryotes
Eukaryotic cell: Prokaryotic cell: Size: Most are 5 μm – 100...
- Plant and Animal Cells
There are many different types of cells in animals. Each...
- Video
Cell structure - AQA Video. Organisms are made up of cells....
- Comparing Sizes
- Parts of The Flower and Their Functions
- The Function of A Flower
- Pollination Processes
- References
Flowers have two primary parts: the vegetative part, which includes the petals and the sepals, and the reproductive part, encompassing the stamen (male reproductive organ) and the pistil or carpal (female reproductive organ).
The primary function of a flower is reproduction, ensuring the survival of the species. Through the process of pollination and fertilization, flowers produce seeds. Each seed contains a new plant, waiting for the right conditions to grow.
Pollination is the act of transferring pollen grains from the male anther of a flower to the female stigma. This process can occur through self-pollination or cross-pollination: 1. Self-pollination: This occurs when the pollen from an anther deposits onto the stigma of the same flower or another flower on the same plant. Self-pollination is common ...
Ackerman, J. D. (2000). “Abiotic pollen and pollination: Ecological, functional, and evolutionary perspectives”. Plant Systematics and Evolution. 222 (1): 167–185. doi:10.1007/BF00984101De Craene, Ronse; P., Louis (2010). Floral Diagrams. Cambridge: Cambridge University Press. ISBN 978-0-511-80671-1. doi:10.1017/cbo9780511806711Esau, Katherine (1965). Plant Anatomy(2nd ed.). New York: John Wiley & Sons. ISBN 978-0-471-24455-4.Mauseth, James D. (2016). Botany: An Introduction to Plant Biology(6th ed.). Jones & Bartlett Learning. ISBN 978-1-284-07753-7.May 17, 2023 · Cell Wall: The cell walls of plant cells contain cellulose, while fungal cell walls mainly consist of chitin. Nutrition: Plant cells are autotrophic and produce their own food via photosynthesis. Fungal cells, on the other hand, are heterotrophic and obtain their nutrients through absorption.
- Sepals: The sepals form the outermost whorl of a flower and are usually green in color. Collectively known as the calyx, sepals act as protective covers for the developing flower bud before it blossoms.
- Petals: The colorful and often fragrant petals lie just above the sepals and form the corolla of the flower. Their vibrant hues and enticing scents attract pollinators such as bees, butterflies, and birds.
- Stamens: Stamens are the male reproductive organs of a flower and comprise the androecium. Each stamen typically consists of two parts: Anther: The anther is a yellowish sac-like structure located at the top of the stamen.
- Pistil: The pistil is the female reproductive organ of the flower and forms the gynoecium. It is usually located at the center of the flower and comprises three parts
- Cell Wall. It is the outermost, protective layer of a plant cell having a thickness of 20-80 nm. Cell walls are made up of carbohydrates such as cellulose, hemicellulose, and pectin and a complex organic polymer called lignin.
- Plastids. They are double membrane-bound organelles that have their own genetic material. Plastids are mainly of three types: a) Chloroplasts: Found in the green parts of a plant and algae that contain the photosynthetic pigment, chlorophyll.
- Central Vacuole. It is the large vesicle that make up almost 30 to 80% of the total plant cell volume. The central vacuole is often the largest organelle in the cell that is filled with fluid, ions, enzymes, and other molecules.
- Cell Membrane or Plasma Membrane. It is a thin, biological membrane having a thickness of 7.5-10 nm that separates the interior of the cell from the outside environment.
This film explores the different parts of the plant, including the stem, trunk, leaves, flowers and root. The function of each is explained through scientific enquiry and comedy, to give pupils a...
People also ask
What is the function of a flower?
How do different types of cells work together in plants?
What are the characteristics of a plant cell?
What is the difference between plant and fungal cells?
Jul 31, 2022 · In plants, just as in animals, similar cells working together form a tissue. When different types of tissues work together to perform a unique function, they form an organ; organs working together form organ systems. Vascular plants have two distinct organ systems: a shoot system, and a root system.
