Uploaded August 2023 | Updated September 2026, 12 hours ago

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You can find all my A Level Biology videos fully indexed at freesciencelessons.co.uk/a-level-revision-videos/a-level-biology

In this video, we look at the adaptations of living organisms. First we explore what is meant by anatomical, behavioural and physiological adaptations, giving examples of each. We then explore what is meant by convergent evolution and look at how this is seen in placental moles and marsupial moles.

Image credits:

Butterfly fish
commons.wikimedia.org/wiki/File:Chaetodon_capistratus_14zz.jpg
Photo by David J. Stang, CC BY-SA 4.0 creativecommons.org/licenses/by-sa/4.0, via Wikimedia Commons

Polyphemus Moth
commons.wikimedia.org/wiki/File:Antheraea_polyphemus_-_Polyphemus_Moth.jpg
Ilona Loser, CC BY-SA 4.0 creativecommons.org/licenses/by-sa/4.0, via Wikimedia Commons

Automeris io
commons.wikimedia.org/wiki/File:Automeris_ioPCCA20040704-2975AB1.jpg
Patrick Coin (Patrick Coin), CC BY-SA 2.5 creativecommons.org/licenses/by-sa/2.5, via Wikimedia Commons

Mycalesis patnia
commons.wikimedia.org/wiki/File:Mycalesis_patnia.jpg
L. Shyamal, CC BY-SA 2.5 creativecommons.org/licenses/by-sa/2.5, via Wikimedia Commons

Sand lizard
commons.wikimedia.org/wiki/File:Zauneidechse_1469.jpg
Pelz, CC BY-SA 3.0 creativecommons.org/licenses/by-sa/3.0, via Wikimedia Commons

Dolphin
commons.wikimedia.org/wiki/File:Dolphind.jpg
sheilapic76, CC BY 2.0 creativecommons.org/licenses/by/2.0, via Wikimedia Commons

Marram Grass
commons.wikimedia.org/wiki/File:Marram_Grass,_Goswick_Sand_Dunes_-_geograph.org.uk_-_2135294.jpg
Marram Grass, Goswick Sand Dunes by Mick Garratt, CC BY-SA 2.0 creativecommons.org/licenses/by-sa/2.0, via Wikimedia Commons

Bonobo using stick
commons.wikimedia.org/wiki/File:A_Bonobo_at_the_San_Diego_Zoo_%22fishing%22_for_termites.jpg
Mike Richey, CC BY-SA 3.0 creativecommons.org/licenses/by-sa/3.0/, via Wikimedia Commons

Spider web
commons.wikimedia.org/wiki/File:Spider_and_his_web._(49532089713).jpg
DAVID S. FERRY III from PLANT CITY,FL., U.S.A., CC0, via Wikimedia Commons

Myoxocephalus scorpius PAQ
commons.wikimedia.org/wiki/File:Myoxocephalus_scorpius_PAQ.jpg
upload.wikimedia.org/wikipedia/commons/b/b8/Myoxocephalus_scorpius_PAQ.jpg

Myoxocephalus scorpius 01
commons.wikimedia.org/wiki/File:Myoxocephalus_scorpius_01.jpg
TinoStrauss, CC BY-SA 3.0 creativecommons.org/licenses/by-sa/3.0, via Wikimedia Commons

Southern marsupial mole
commons.wikimedia.org/wiki/File:Notoryctes_typhlops,_Southern_Marsupial_Mole,_mount._Registration_no._C_28198_(cropped_4-3).jpg
Heath Warwick, CC BY 4.0
creativecommons.org/licenses/by/4.0, via Wikimedia Commons

Placental mole
en.wikipedia.org/wiki/File:ScalopusAquaticus.jpg#file
Kenneth Catania, CC BY-SA 3.0
creativecommons.org/licenses/by-sa/3.0, via Wikimedia Commons

Pregnant woman
commons.wikimedia.org/wiki/File:Baby_belly.jpg
David Roseborough from Los Angeles, United States, CC BY 2.0 creativecommons.org/licenses/by/2.0, via Wikimedia Commons

Joey in pouch
commons.wikimedia.org/wiki/File:Joey_in_pouch.jpg
Geoff Shaw, CC BY-SA 3.0 creativecommons.org/licenses/by-sa/3.0/, via Wikimedia Commons

Kangaroo and joey
commons.wikimedia.org/wiki/File:Kangaroo_and_joey06.jpg
jenny-bee, CC BY 2.0 creativecommons.org/licenses/by/2.0, via Wikimedia Commons

Large Ground Finch
commons.wikimedia.org/wiki/File:Large_ground_finch_(4229035966).jpg
Peter Wilton, CC BY 2.0 creativecommons.org/licenses/by/2.0, via Wikimedia Commons

Medium Ground Finch
commons.wikimedia.org/wiki/File:Female_Gal%C3%A1pagos_medium_ground_finch.jpg
Charles J. Sharp, CC BY-SA 3.0 creativecommons.org/licenses/by-sa/3.0, via Wikimedia Commons

Small Tree Finch
commons.wikimedia.org/wiki/File:Camarhynchus_parvulus.jpg
Mike Comber, CC BY-SA 2.0 creativecommons.org/licenses/by-sa/2.0, via Wikimedia Commons

Green Warbler Finch
commons.wikimedia.org/wiki/File:Certhidea_olivacea_-_Green_Wabler_Finch.jpg
2000 - Paul McFarling, Charles Darwin Foundation, CC BY-SA 3.0 creativecommons.org/licenses/by-sa/3.0, via Wikimedia Commons

Charles Darwin
commons.wikimedia.org/wiki/File:Charles_Darwin_aged_51.jpg
Messrs. Maull and Fox, Public domain, via Wikimedia Commons