Mystery #2Tier 1plants / defences
Why are so many plants covered in sharp thorns and spikes?
A rose looks soft and gentle, yet its stem is armed with sharp thorns. Cacti bristle with spines, brambles grab at your jumper, and holly leaves are tipped with prickles. None of these plants can run, hide or bite. So why have so many of them bothered to grow their very own set of weapons?
Your guess
What do you reckon all those spikes and thorns are for?
There's no single magic word to type, have a go in your own words, then reveal the answer to see how close you got.
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