In this programme, Rob and Yvonne are talking about seed banks – a place where the seeds from all kinds of plants are carefully stored. Unfortunately, researchers are warning that about one fifth of the world's plants are at risk of becoming extinct.
This week's question:
The Youtan Poluo is one of the rarest flowers and was recently found by a farmer in China.
How often does it bloom? Is it every:
a) 1,000 years
b) 3,000 years
c) 5,000 years
Listen out for the answer in the programme.
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doesn't exist anymore
flower or open up
different groups of plants or flowers. (It can also refer to groups of animals)
- urban centres
areas such as cities or towns where large numbers of people live, work and shop
- plant biodiversity
wide variety of plants that support a balanced environment
- botanical experts
people with specialist knowledge of flowers, plants and trees