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Cellulose
A naturally occurring polymer of glucose that forms cell walls in plants and gives them strength and rigidity. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual...
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Angiosperm
Flowering plants, or more precisely plants whose seeds are enclosed in a fleshy fruit, rather than being naked at pollination. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and...
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Fertilisation - Fusion of Sex Cells
The fusion of two sex cells to create a new organism. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science Glossary Films reinforce abstract...
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Tropism
When a plant grows in a particular direction in response to an external stimulus. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science Glossary...
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Omnivore
An animal that eats both meat and plant materials. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science Glossary Films reinforce abstract...
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Fossil fuels
Fuel formed over millions of years, in conditions of high heat and pressure, from the fossilised remains of dead organic matter such as plants and animals. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds...
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Tissue
A collection of cells in an organism that have similar appearance, structure and function. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science...
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Chlorophyll
A green pigment found in all plants and algae, that enables energy from sunlight to be converted to chemical energy through the process of photosynthesis. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds...
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Acid rain
Rain that is unusually acidic, with a pH less than 5. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science Glossary Films reinforce abstract...
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Hybridisation
The combining of genetic material from two variations within a species, or of different species, to create a hybrid individual. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and...
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Conception
Another word for fertilisation - when two sex cells combine to create a new organism. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science...
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Monomer
A small molecule that can chemically bond in chains or groups to other similar molecules, to form larger molecules called polymers. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and...
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Topsoil
The uppermost 5 to 20cm of soil, with a high concentration of organic matter and microorganisms, where almost all of the biological activity in soil takes place. A Twig Science Glossary Film. Key scientific terms defined in just 60...
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The Elements: Oxygen
One of the most abundant elements, oxygen is vital to all life on Earth. Chemistry - Periodic Table - Learning Points. Oxygen makes up 21% of Earth's atmosphere. Two-thirds of the human body is made of oxygen. Oxygen is essential for...
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Classification
The grouping of organisms into categories with similar features. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science Glossary Films reinforce...
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Active transport
The use of energy to move particles across a cell membrane from a lower concentration to a higher concentration. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual...
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Asexual reproduction
Reproduction involving just one parent, without the mixing of genetic material with another individual. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions....
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Artificial propagation
Producing new plants by human intervention and artificial methods. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science Glossary Films reinforce...
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Starch
A carbohydrate made of long chains of repeated glucose building blocks. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science Glossary Films...
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Autotroph
An organism that can make its own food, being able to produce complex organic compounds, such as proteins and carbohydrates. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise...
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Glucose
A simple sugar that plays a very important role in all living things. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science Glossary Films...
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Herbivore
An animal that gets its energy from eating plant materials. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science Glossary Films reinforce...
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Multicellular
Made up of more than one cell. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science Glossary Films reinforce abstract concepts and key...
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Sperm
Male reproductive cells, also referred to as the male gametes. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science Glossary Films reinforce...