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Several analogous types of eyes have developed independently through convergent evolution.
gaismas atklāšanas orgāns, redzes orgāns, vīzija, acs, evolūcija, slieku, Gliemezis, bišu, ūdrs, vezikulārā acs, savienojuma acs, gaismas jūtīga šūna, gaisma, redzamā gaisma, vizuālais attēls, radzenes, varavīksnene, sklera, tīklene, konusa šūnas, stieņu šūnas, skolēns, redzes nervs, kristālisks konuss, dzīvnieks, kukainis, zīdītājs, Mīkla, moluski, kukaiņi, zīdītāji, Posmtārps, annelīdu, Bioloģija
The eye is one of our most important sense organs. When stimulated by light, electric impulses are produced by its receptors.
The curvature of the lens of the eye changes when we look at a distant or at a near object, to ensure a sharp image.
Concave and convex lenses are used for the correction of short-sightedness and far-sightedness.
The cockchafer (or maybug) is a widespread bug in Europe. Its larvae, known as chafer grubs are considered a pest.
The inability to differentiate certain shades of colour is called colour vision deficiency.
Honeybees produce a sweet and nutritious substance, honey.
This animation demonstrates the design and operation of a traditional cinema projector.
The large white butterfly is a common species of butterflies, through which we demonstrate the anatomy of butterflies.
Larvae of this type of mayflies spend the first three years of their lives in water, their adult lives last for only one day which they use for mating.
One of the most common types of flatworms.
A widespread snail species, also popular as food.
An ant colony consist of a queen, male ants and workers.
With the example of the stag beetle we demonstrate how insects' muscles function, how insects fly and how they reproduce.
The life cycle of vertebrates starts with the production of the reproductive cells of an individual and ends with the production of the reproductive cells...
Based on their life cycle, insects can be grouped into three categories: ametabolous, hemimetabolous or holometabolous insects.
The position and acceleration of the head is detected by the inner ear.
An extinct group of Cephalopoda, with solid external skeletons. They are excellent index fossils.
Otters are semi-aquatic predatory mammals.