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The pericarp of real fruits develops from the carpel, while the pericarp of pseudofruits develops from other parts of flowers.
The withdrawal reflex is a spinal reflex that ensures moving away from potentially damaging stimuli.
A type of herbivorous dinosaur easily recognisable by its large frill and three horns which lived in the Cretaceous period.
The dentition of different species of mammals reflect their feeding habits.
A type of prehistoric reptile having bony plates on its back, which aided thermoregulation.
An extinct group of Cephalopoda, with solid external skeletons. They are excellent index fossils.
A mammal with features typical of reptiles: it lays eggs and has a cloaca.
The ancestors of Arachnida and Crustacea belonged to the class Trilobita.
A group of fish characterised by a cartilaginous skeleton, well-known species include the great white shark and the great hammerhead shark.
Several analogous types of eyes have developed independently through convergent evolution.
A prehistoric flying reptile, similar to birds. However, there is no direct evolutionary link between the two.
Concave and convex lenses are used for the correction of short-sightedness and long-sightedness.
Producing speech requires the synchronised operation of several cortical centres.
The archaeopteryx shows characteristics of both birds and reptiles. It is probably the ancestor of birds.
Extinct proboscidea closely related to today's elephants, often hunted by prehistoric man.
Smoking severely damages the respiratory system, it may cause COPD or lung cancer.
Penguins are birds living in the Antarctic and adapted to cold temperature and swimming.
This animation demonstrates the anatomy of tulips, daffodils and snowdrops.
A species of venomous snakes widespread in Europe. Its bite is rarely fatal to humans.
