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How are cells structured? Learn about the size and function of plant and animal cells for GCSE Combined Science, AQA.
- Comparing Sizes
GCSE; AQA Trilogy; Cell structure - AQA Comparing sizes....
- Eukaryotes and Prokaryotes
Eukaryotic cell: Prokaryotic cell: Size: Most are 5 μm – 100...
- Plant and Animal Cells
GCSE; AQA Trilogy; Cell structure - AQA Plant and animal...
- 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.Oct 21, 2021 · Structure and Characteristics of a Plant Cell. A model of a typical plant cell is found to be rectangular in shape, ranging in size from 10 to 100 µm. Under the microscope, it shows many different parts. Each part, known as an organelle, works together to keep the cell functional.
- 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
A film looking at the various parts of a flower and their functions. Suitable for Key Stage 1, Key Stage 2, Early and 1st Level and 2nd level and Foundation level.
The diagram below shows the same plant cell, as viewed with the light microscope, and with the transmission electron microscope. Animal and plant cells have certain structures in common. Cell...
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Dec 7, 2023 · Chloroplasts are the organelles in plant cells where photosynthesis occurs. Each chloroplast is surrounded by a double-membrane envelope. Each of the envelope membranes is a phospholipid bilayer. Chloroplasts are filled with a fluid known as the stroma. The stroma is the site of the light-independent stage of photosynthesis.
