Fill in the gaps with the words and expressions from active vocabulary of the unit

UNIT VI. BOTANY AS A SCIENCE

In this unit:

· talking about the origin of botany

· describing the goals of the science

· discussing the problems of up-to-date science

· using the Article

1. Read the text and be ready to answer the following questions:

1. What can you name botany in other words?

2. What groups of plants are mentioned in the first paragraph of the text?

3. Why did early humans take an interest in different kind of plants?

4. What techniques were developed to study plants more accurately? When did it happen?

5. What is the sphere of scientific interests in modern botany?

BOTANY AS A SCIENCE

Botany, also called plant science(s) or plant biology, is the science of plant life and a branch of biology. A botanist or plant scientist is a scientist who specializes in this field of study. The term "botany" comes from the Ancient Greek word βοτάνη meaning "grass”. Traditionally, botany has also included the study of fungi and algae by mycologists and phycologists respectively. Nowadays, botanists study approximately 400,000 speciesof living organisms of which some 260,000 species are vascular plants and about 248,000 are flowering plants.

Botany originated in prehistory as herbalism with the efforts of early humans to identify – and later cultivate – edible, medicinal and poisonous plants, making it one of the oldest branches of science. Medieval physic gardens, often attached to monasteries, contained plants of medical importance. They were forerunners of the first botanical gardens attached to universities, founded from the 1540s. One of the earliest was the Padua botanical garden. These gardens facilitated the academic study of plants. Efforts to catalogueand describe their collections were the beginnings of plant taxonomy, and led in 1753 to the binomial system of Carl Linnaeus that remains in use to this day.

In the 19th and 20th centuries, new techniques were developed for the study of plants, including methods of optical microscopy and live cell imaging, electron microscopy, analysis of chromosome number, plant chemistry and the structure and function of enzymes and other proteins. In the last two decades of the 20th century, botanists exploited the techniques of molecular genetic analysis and other new scientific methods to classify plants more accurately.

Modern botany is a broad, multidisciplinarysubject which interacts with most other areas of science and technology. Research topics include the study of plant structure, growth and differentiation, reproduction, biochemistry and primary metabolism, chemical products, development, diseases, evolutionary relationships, systematics, and plant taxonomy. Dominant themes in 21st century plant science are molecular genetics and epigenetics, which are the mechanisms and control of gene expression during differentiation of plant cells and tissues. Botanical research has diverse applications in providing main foods and textiles, in modern horticulture, agriculture and forestry and plant propagation, breedingand genetic modification, in the synthesis of chemicals and raw materials for construction and energy production, in environmental management, and the maintenance of biodiversity.

VOCABULARY PRACTICE

1. Match the words and their definitions:

Fill in the gaps with the words and expressions from active vocabulary of the unit.

1. The organisms in kingdom __________________ include mushrooms, yeasts, molds, etc.

2. __________________ are a very large and diverse group of eukaryotic organisms, ranging from unicellular to multicellular forms that may grow up to 50 meters in length.

3.___________________ is a discipline in genetics that applies recombinant DNA, DNA sequencing methods, and bioinformatics to sequence, assemble, and analyze the function and structure of genomes (the complete set of DNA within a single cell of an organism).

4. The section of molecular genetics that studies genome and genes of living things is called ___________________.

5. The study or use of the medicinal properties of plants is known as _____________________.

6. Modern botany is a broad, ___________________ subject which interacts with most other areas of science and technology.

7. Histology is the study of the microscopic structure of ____________________.

8. The seas around northwest Europe support an exceptionally wide range of seabed habitats and rich ___________________.

9. We now live in a world where in-vitro fertilization is a usual procedure, and where _____________ _______________ food can be found in our shops.

10. European countries needed cheap ___________________ such as coal and iron ore that developing countries had plenty of.

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