Search results
quizlet.com
- The anther is usually at the end of a thin tube-like structure called the filament. Filament: The filament is a stalk that holds up the anther, making the pollen accessible to pollinators or wind.
sciencenotes.org/parts-of-a-flower-diagram-and-functions/Parts of a Flower - Diagram and Functions - Science Notes and ...
People also ask
What is the function of a flower?
Why are plant cells important?
What are the parts of a flower?
What is a plant cell?
What structures do plant cells have?
Why do plant cells have different structures?
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
Their cell structure is simpler than the cells of animals,...
- Plant and Animal Cells
Cell structure - AQA Plant and animal cells. Organisms are...
- Video
Cell structure - AQA Video. Organisms are made up of cells....
- Comparing Sizes
- Cell Wall
- Plastids
- Central Vacuole
- Cell Membrane Or Plasma Membrane
- Endoplasmic Reticulum
- Golgi Apparatus
- Microfilaments Or Actin Filament
- Microtubules
- Intermediate Filaments
- Mitochondria
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.
They are double membrane-bound organelles that have their own genetic material. Plastidsare mainly of three types: a) Chloroplasts: Found in the green parts of a plantand algae that contain the photosynthetic pigment, chlorophyll. b) Leucoplasts: Found in the non-photosynthetic tissues of plants. c) Chromoplasts: Colored plastics found in fruits an...
It is the large vesicle that make up almost 30 to 80% of the total plant cell volume. The central vacuoleis often the largest organelle in the cell that is filled with fluid, ions, enzymes, and other molecules. Apart from plants, they are also present in algae.
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. The plasma membrane is selectively permeable in nature, which is mainly composed of lipids and proteins, with some carbohydrates attached to them.
It is a series of membranes within the cytoplasm that forms connections with the nucleus on one side and cell membrane on the other. It is of two types: rough endoplasmic reticulum (RER) and smooth endoplasmic reticulum (SER). The surface of RER has ribosomesattached to it, while they are absent in SER.
Also known as Golgi body or Golgi complex, they are stacks of five to eight membrane-covered sacs called cisternae. The Golgi apparatus acts as the post office of the cell by packaging and transporting proteins from their source RER to their destination.The number of Golgi apparatus varies in cells according to their functions.
They are a network of long and thin protein fibers present in the cytoplasm of the cell having a diameter of 3-6 nm. Microfilamentsare composed of actin proteins that make them extremely strong and flexible.
They are fibrous hollow rods composed of proteins called tubulin. Microtubuleshave an outer diameter of 23-27 nm and an inner diameter of about 11-15 nm. They can grow to as long as 50 µm and thus are highly dynamic.
They are made up of two proteins forming a coiled-coil structure. Intermediate filaments have a diameter of 8-10 nm that are intermediate in size to microfilaments and microtubules. Microtubules, together with microfilaments and intermediate filaments, form the cytoskeletonof the cell.
It is a rod-shaped double membrane-bound organelle that contains its own DNA and ribosomes. Mitochondria are often called the ‘powerhouse of the cell‘, producing ATP that drives all cell-based metabolic activities.
May 24, 2023 · A flower is the reproductive structure of an angiosperm or flowering plant. Each of the parts of a flower has a unique function that contributes to the plant’s successful reproduction. Here are the different parts of a flower, their functions, and a look at how pollination takes place.
Structure: Function: Chloroplast: Contains the green pigment, chlorophyll, which absorbs light for photosynthesis, and the enzymes needed for photosynthesis. Cell wall: Made from cellulose...
- 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
Oct 20, 2024 · BiologyInsights Team. Published Oct 20, 2024. Plant cells, the building blocks of plant life, exhibit unique structures that distinguish them from animal cells and play roles in their survival and function. Understanding these structures is essential for grasping how plants grow, reproduce, and adapt to their environments.
Each structure in a plant cell has a specific function or job. And plant cells can vary in their shape and the structures they contain, depending on their role, because they are adapted to their role in the plant.
