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1.18 Work in groups. Read the text and say what new information about plants and animals you have got from it:

Biology is the study of living things. In studying them we learn the relations of plants and animals to one another, with the world about them and how we can control them. Biology is commonly divided into two branches – botany and zoology. Both animal and plant life is continually changing and there are great differences and likenesses between them.

All organisms are capable of responding to changes in the environment by reacting to external stimuli. In animals this coordination and response to stimuli are accomplished by sense organs and the endocrine and nervous systems.

Plants lack a nervous system and specific sense organs but they respond to external stimuli and chemical coordination in somewhat analogous to that regulated by the endocrine system of animals.

Both plants and animals have hormones. Thus substances are produced in one part of the organism and in very small amounts influence specific physiological processes when transported to another part of the organism. Plant hormones, however, are not produced in specific glands as animal hormones are, and they differ chemically from the hormones of animals, being in general simpler substances. Other substances, which act like hormones but are not known to be produced by the plant, are called plant regulators. The study of plant hormones and these synthetic substances is one of active fields of plant physiological research, and their use in agriculture has become very important.

1.19 Complete the gaps in the following text with the words from

the list:

external, apparent, chemical, varied, variety, unit, animal

In (1)... appearance plants are usually green. Some plants have (2)... and colourful flowers and others have no (3)... blossoms. Among animals there is great (4)... of sizes, shapes and colours. The basic difference between plants and animals lays in the (5)... of structure and function of each, namely, the cell. Plant cells have a cell wall, which is actually non-living in (6)... nature. (7)... cells do not have this.

1.20 Match Russian sentences from part a (1–12) with their English equivalents from part b (a–I).

A

  1. Жизнь на Земле существует везде и в различных условиях.

  2. Но все живые существа должны быть приспособлены к окружающей среде.

  3. Биология изучает жизненные процессы как у животных, так и у растений.

  4. Эти два больших подразделения в биологии называются ботаникой и зоологией.

  5. Как растения, так и животные должны иметь определенные условия для существования.

  6. Как животные, так и растения не могут жить без воздуха, воды, пищи и света.

  7. Одинаковые жизненные процессы имеют место как у животных, так и у растений.

  8. Эти процессы называются дыханием, пищеварением, ростом и размножением.

  9. Очень важный принцип живых организмов – это способность реагировать на внешние раздражения.

  10. Животные реагируют на внешние раздражения через нервную систему и органы чувств.

  11. Растения также приспосабливаются к окружающей среде и реагируют на внешние воздействия.

  12. Однако механизм ответной реакции раздражения у растений сильно отличается от животных.

B

  1. Animals and plants must have certain necessary conditions to exist.

  2. Biology studies the living processes of both animals and plants.

  3. Both plants and animals can't live without oxygen, water, food and light.

  4. The two brunches in Biology are called Botany and Zoology.

  5. Plants also adapt to the environment and respond to the external stimuli.

  6. These processes are called respiration, digestion, growth and reproduction.

  7. The same living processes are in the plants and animals.

  8. The main principle of all living things is their ability to react to the external stimuli.

  9. Though the mechanism of reacting of plants differs greatly from that of animals.

  10. In animals this response to stimuli are accomplished by sense organs and nervous system.

  11. Life exists in many places on the earth and in different conditions.

  12. But all living things have to be adapted to the environment.

Grammar: Irregular plural nouns of Greek and Latin origin (revision).

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