☰ Contents · Biology

Laboratory work 2. Evolutionary ideas

Lessons 38–39 · 2 lessons · A. G‘afurov, A. Abdukarimov, J. Tolipova, O. Ishankulov, M. Umaraliyeva, I. Abdurahmonova. Biology, Grade 10, 1st edition. “Sharq” publishing and printing joint-stock company, Tashkent, 2017
39

The emergence of evolutionary ideas

Textbook: pp. 156–160
GoalExplain the development of views on nature and the living world from antiquity to the Renaissance and the emergence of evolutionary ideas.
New words
Aristotle · Aristotelsystematics · sistematikaal-Biruni · BeruniyIbn Sina (Avicenna) · Ibn Sino
Explanation

The first knowledge about nature was gathered in ancient Egypt, India and China: plants were sown, animals domesticated and medicinal plants studied. In Central Asia the worldview is reflected in ancient written sources (including the “Avesta”): rules on cleanliness, water, soil and livestock. In ancient Greece Aristotle (384–322 BC) classified living things, knew about 500 animal species, divided animals into “blooded” (vertebrates) and “bloodless” (invertebrates) and described embryo development; his pupil Theophrastus described over 400 plant species. The Roman writer Lucretius tried to explain nature by natural causes. Medieval Central Asian scholars – al-Farabi, al-Biruni, Ibn Sina, Babur – made large contributions to natural science and medicine: al-Biruni reflected on struggle among living things and the influence of the environment (these ideas cannot be called the modern theory of evolution), Ibn Sina in the “Canon of Medicine” suggested that infectious diseases spread by invisible creatures, and Babur observed and described plants and animals in the “Baburnama”. In medieval Europe the view that species are unchangeable was widespread. In the 15th–18th centuries the Great Geographic Discoveries revealed new species, and the microscope and classification developed, preparing ground for studying the diversity and history of life.

Worked examples
Aristotle said animals should be grouped by many traits, not one, and noted “zoophytes” (like jellyfish) as standing between animals and plants – the start of the systematic study of nature.
Ibn Sina’s “Canon of Medicine”, in five books, was taught in European universities for centuries. He suspected a role of invisible agents in spreading disease; microbes were proved later with the microscope.
Class activity

“Timeline”: place the periods of Aristotle, Theophrastus, al-Biruni, Ibn Sina and Babur on a line and write one contribution for each.

Practice
1
Into which groups did Aristotle divide animals and what do they correspond to now?
2
Write Ibn Sina’s contribution to biology and medicine.
3
In which centuries did al-Farabi, al-Biruni and Ibn Sina live? Put them in order of their lifetimes.
4
Why can al-Biruni’s ideas not be called the modern theory of evolution?