Tagged: plant science

respiration; germination; fermentation; anaerobic & aerobic

When living things respire they use up oxygen. This can be monitored using an oxygen sensor. The living thing can be a plant, animal or microorganism. Maggots, locusts, or yeast are often used and so can pond-weed. If you use Elodea, its container should be kept in the dark or wrapped in foil.
It is also quite easy to show how temperature affects the rate of respiration
– however, in this example, the oxygen sensor should be able to compensate for its own response to temperature changes.

warm germinating seeds

When seeds germinate they use energy and give off heat. To test this, you can use temperature sensors which will continuously monitor any heat produced. You will set up some seeds in an insulated...

when do plants grow

It’s not easy to measure how fast a plant grows. You would probably not be too keen to take measurements every few hours – and especially not overnight. There are ways, however, of seeing...

changes in an aquarium

Life in any aquatic habitat has to be supported by oxygen. We are all too familiar with rivers and streams where the oxygen supply has been exhausted and the river dies. The production and...

scientist 70: the biotechnologist – biosciences for Africa BFA (2014)

A Cambridge project seeks to improve farming practices in Africa by sharing advances in biotechnology. They’re called Biosciences for Farming in Africa (www.b4fa.org). Chris Creese meets one of their founders Dr David Bennett. There’s a ‘demonstration...


scientist 37: the farmer – catchment sensitive farming (2013)

A government initiative to help farmers keep the water supply free of pollutants. We visit a farm in Duxford, England where Andrew Down from ‘Natural England’ explains what is meant by “Catchment Sensitive Farming”. Environment...


scientist 27: the conservation scientist – Andrew Balmford has Wild Hope (2012)

Speaking to The Science show’s Chris Creese, the author of “Wild Hope” explains what ecosystems do for us, and how we can help ourselves by helping the environment. Cambridge conservation scientist, Andrew Balmford, explains why there’s hope...