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3.12 Find the pairs of synonyms:

Vital processes, to estimate, main, country, enormous, to like, village, to think, to provide, living processes, to supply, principle, to account, help, to consider, to be fond of somebody, great.

3.13 Complete the sentences:

1. Carolus Linneus was born …

2. One of his father’s friends observed …

3. He suggested sending Carl …

4. His professor grew …

5. After Linneus had finished …

6. When he got back …

7. The main thing was …

8. Later this system was published …

9. It was the system …

10. According to Linneus system …

11. The first word …

12. The first addition …

13. Linneus is considered …

3.14 Work in pairs:

A. asks questions to text 3.11;

B. answers. Then turn the roles.

Example: Where was Carrolus Linneus born?

3.15 Read the text and answer the questions.

The present-day science of taxonomy or systematics has been recognized as a specialized branch of biology for over 200 years. During the century, a Swedish doctor and botanist Carl von Linneus traveled over most of Western Europe and England, collecting and studying the plants and animals of the region. He had a passion for classification and a genius for minute and accurate observation and for detaching the important from the trivial. His standards for describing and naming plants and animals and the criteria by which he estimated relationships and affinities were innovations for his time. His method of classification and the system he used for the comparatively limited number of organisms that were known to him is the foundations upon which the modern systematic groupings of biological systems have been built.

Linnean system of classification was founded on the concept of a basic natural grouping of like individuals, called a species. He conceived of the species as a fixed and unchangeable grouping of similar individuals. He based his comparisons principally on morphological features, and species was characterized, named, and filed away as an immutable entity. Such a system is essentially static and does not recognize the possibility of change. With the development of theories of evolution, the concept of species has changed. In the constant change and evolution, a species cannot be regarded as absolutely fixed.

  1. What is the science of taxonomy?

  2. What passion had Carl von Linneus?

  3. What innovations did he bring into science? Were they important?

  4. What was the Lennean system of classification founded on?

  5. Was the concept of species changed nowadays? Does it influence the Linnean system of classification?

3.16 Speak on the topics:

1 Carolus Linneus’ biography.

2 Carolus Linneus’ investigations in Biology.

3 Carolus Linneus – the founder of taxonomy.

3.17 Match the words in a with their meanings in b.

A

rodents

vertebrates

pinnipeds

carnivore

marsupial

monotreme

omnivore

micro-organisms

primates

B

a. Animals with backbones. The group includes fish, amphibians, reptiles, birds, mammals.

b. Mammal with no placenta, whose young are born atembryonic stage after short gestation period, then attach to a nipple, usually within a marsupium or under folds of skin.

c. Group of carnivores adapted to marine life, including seals and sea-lions.

d. Animal which eats plants and animals.

e. Group of mammals which includes tarsiers, monkeys, apes and humans.

f. Group of gnawing animals, including mice and rats.

g. Mammal which lays eggs and possesses a cloaca. It feeds its young on milk but lacks nipples.

h. Minute living creatures such as bacteria and protozoa.

i. Animal which eats other animals.