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Friday, 25 April 2014

Stone Plants: A case of Batesian Mimicry



Lithops is a scientific name to a remarkable plant discovered by a group of scientists headed by the botanist William Burchell in South Africa in 1811. Firstly, they picked up a stone found to their surprise it was a plant. They called that plant stone faces or stone plants. This mimicry of the natural environment is really best described as a camouflage. 

Lithops are succulent plants adapted to drought-stressed environments. A majority of the leaf is held underground. As a result, these plants have some adaptations to photosynthesize underground. These plants are easily mistaken by herbivores for stones and thus overlooked.  

Look that video which shows these plants:



References


Book:
Scott, P. 2008, Physiology and Behaviour of plants, 1st edn, Wiley: USA

Video: 

Youtube: https://www.youtube.com/watch?v=ofmJaZZS0WM, viewed 25 April 2014



4 comments:

  1. Stone plants are among my favourite of all plants :) What adaptations do these plants have that allow them to photosynthesise underground?

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    1. ok, I'll try summarise that for you  These plants have a small upper visible surface above ground. That surface is pigmented and acts as a window for the rest of leaf. The centre of the leaf is made up of succulent cells that are crystal clear. These cells receive light. So, the light is scattered through these cells onto the photosynthetic cells. This scattering permits more of the photosynthetic cells to use light from a range of angles. That was a little bit difficult to explain so I used some (or a lot of) words from Scott, P. 2008, Physiology and Behaviour of plants, 1st edn, Wiley: USA.

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  2. Truly amazing! What sort of environment are they found?

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    Replies
    1. Hi Lola! These plants are adapted to drought-stressed environments such as deserts. They are found in South Africa!

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