*Botany. About plants. Classification of plants. Roots and rhizomes. Types of roots *3*22*1*

#897

*!Botany (derived from the Greek “Botany” for a herb or a plant) is the science which deals with plants, living and extinct. Botany holds its place as a science parallel with zoology, physics, geology and other concrete sciences.There are many subdivisions of Botany.

Which title is the most suitable one to this passage?

*living plants

*science place

*extinct plants

*concrete science

*+science of plants

#898

*!The scope of Botany, as a pure and as an applied science may be summarized by the main broad subdivisions: systematic Botany or Taxonomy, a study of the arrangement and classification of plants; plant morphology is a study of the plant structure. Plant Physiology is the study of life processes and functions of the plant and its organs.

Which title is the most suitable one to this passage?

*plant Physiology

*science of plants

*plant Morphology

*systematic Botany

*+Botany subdivisions

#899

*!In addition to the three broad fields of Botany there are many specialized ones such as plant Pathology or Phytopathology (study of plant disease), Paleobotany (study of fossil plants), Genetics (study of bacteria), Mycology ( study of fungi), Algology (study of algae) Bryology

(studyof mosses), Agrostology ( study of grasses) and others.

Which title is the most suitable one to this passage?

*Genetics

*Mycology

*Paleobotany

*Phytopathology

*+fields of Botany

#900

*!Most plants are green because they contain the substance chlorophyll. They use it to trap light energy; this is used during photosynthesis to make food. Plants are usually anchored in agrowing medium such as soil. Some, such as mosses and liverworts, are small and delicate. Which title is the most suitable one to this passage?

*zinc

*oxygen

*nitrogen

*hydrogen

*+chlorophyll

#901

*!We have our practical classes on chemistry in the chemical laboratory. There are light rooms. It is on the first floor. It is a large room. There are two benches in it. There are shelves and racks above the benches. On the shelves you can see some glasswear. You can see funnels, beaker and flasks of different forms on the shelves.

Which title is the most suitable one to this passage?

*class room

*university hall

*research room

*practical classes

*+chemical laboratory

#902

*!Mendeleyev A.D. was the great Russian scientist, he was born in Tobolsk in 1834. After finishing school, at the age of 16, he went to St.Petersburg and entered the pedagogical institute. He graduated from the institute in 1855. In 1866 he was appointed professor at the university where he gave a course of lectures on chemistry.

Which title is the most suitable one to this passage?

*Bakulev M.

*Nobel A.

*Butlerov A.M.

*Asfendiyarov C.D.

*+Mendeleyev A.D.

#903

*!At the university Mendeleyev taught classes in the morning. In the afternoon he made experiments in his two room laboratory. At night Mendeleyev spent much of his time working with the cards on which he put down information about each of the chemical elements.

Which title is the most suitable one to this passage?

*periodic law

*chemical elements

*+Mendeleyev’s job

*Mendeleyev’s room

*chemical laboratory

#904

*!Mendeleyev made thousands of experiments with his own hands. Everything in the world that was known about the chemical elements Mendeleyev knew. For months, for years he searched for missing data. All those data were being brought together and grouped in a special way. In 1869 the description of more than 60 elements was completed, and Mendeleyev published his periodic table.

Which title is the most suitable one to this passage?

*applied science

*Mendeleyev’s life

*chemical elements

*laboratory experiments

*+Mendeleyev’s periodic table

#905

*!The periodic law was discovered by D. I. Mendeleyev in 1869. Mendeleyev arranged the elements in tabular form in such a way as to bring their correspondences quite clearly. The elements are divided into eight groups, each of which is entered in a separate column. They are also divided into 10 «series» each of which is entered upon one horizontal line. The atomic weights increase across the table from left to the right.

Which title is the most suitable one to this passage?

*Russian scientist

*chemical laboratory

*lectures on chemistry

*Mendeleyev's biography

+tabular form of the elements

#906

*!Annuals are plants that live for a year or less based on Latin 'annus', meaning 'year'. Annuals are also known as seasonal flowering plants which flower only for three to four months. They are normally grown through seeds. They grow, flower, make more seeds and die, within a year. Annuals are great for creating instant effect and adding color to your garden. 

Which is the most suitable title to this passage?

*biennials

*types of plants

*perennials

*+annuals

*plants

#907

*!A plant that takes two years to grow from seed to fruition, bloom and die or a plant that lasts two years is a biennial, based on Latin 'biennis' meaning ‘two years’. These are also seasonal flowering plants that flower only in the second year of planting. After blooming, they don’t perform well the following year or become untidy and then dies.

Which is the most suitable title to this passage?

*plants

*types of plants

*perennials

*+biennials

*annuals

#908

*!The Latin 'perennis' means 'many years'. Perennials are those flowering plants that last longer and keep on flowering. Most take two years until they are old enough to bloom. Once you plant them there is no need for replanting year after year. Most perennials grow best in slightly acidic soils and prefer six to eight hours of sun per day. Watering should be deep, infrequent and applied directly to the soil.

Which is the most suitable title to this passage?

*types of plants

*+perennials

*biennials

*annuals

*plants

#909

*!Trees can be flowering trees, fruit trees, shade trees, ornamentals etc. Some attractive dwarf medium height flowering trees or ornamental trees would be ideal for a home garden. Like, Cornus Florida Magnolia. Trees can be planted in trenches filled with a mixture of garden earth and manure in the ratio of 2:1. Trees take a number of years to mature. Once they settle, trees need to be watered only once in a while. 

Which title is the most suitable to this passage?

*home garden

*florida Magnolia

*annuals

*+trees

*biennials

#910

*!Growing houseplants is a wonderful way to add attractive foliage and flowers to indoor spaces. There's a houseplant for every living space, from small-scale terrariums to miniature trees. Every type of houseplant has particular growing requirements as well as preferences for sun and moisture.

Which title is the most suitable to this passage?

*plants

*garden plants

*forest plants

*+houseplants

*types of plants

#911

*!Plant body customarily consists of three general kinds of parts called roots, stems and leaves. Roots are the organs that anchor the plant in the soil and absorb water and minerals.The leaves, which are generally thin and flat, are usually the principal, photosynthetic organs of the plant.

Which title is the most suitable to this passage?

*roots

*stems

*leaves

*+plant organs

*seeds

#912

*!Roots and rhizomes are subterranean organs of plants that hold the plants in place and supply them with water and nourishing salts from the soil. It is well known that roots and rhizomes are easily recognized by their appearance, colour, odour and taste as well as by the structure of transverse section. Rhizomes or rootstocks are thick and short and possess a pith that usually absent in roots.

Which title is the most suitable one to this passage?

*roots usage

*+roots and rhizomes

*types of roots

*primary roots

*adventitious roots

#913

*!Roots are one of the three kinds of organs that most plants have in order to grow. Roots with different forms have special names. The roots are formed first and grow directly from the stem are called primary roots. A primary root that grows much longer that any of its branches is called a tap-root. Sometimes tap-roots grow very thick and store up food for the rest of plant. These are fleshy roots or tubers that may be seen in carrot, radish etc.

Which title is the most suitable one to this passage?

*importance of roots

*definition of roots

*+types of roots

*primary roots

*adventitious roots

#914

*!A cluster of thick primary roots are called fascicled roots.A primary root that grows much longer that any of its branches is called a tap-root. Roots may grow on the stem or in other unusual places. These are known as adventitious roots. Adventitious roots grow on plants which need extra support for their stems.

Which title is the most suitable one to this passage?

*role of roots

*+names of roots

*fascicled roots

*adventitious roots

*primary roots

#915

*!The generic name comes from the Latin «valere» - to be in good health.Valerian is a tall, straight, perennial herbaceous plant. Its underground part consists of a short, vertical, conical rhizome having numerous rootlets. The stem is a hollow cylinder 1 – 2 m high. It is branched at the terminal region and has pinnate, cauline.

Which title is the most suitable one to this passage?

*herbaceous plant

*plant parameters

*+valerian plant

*conical rhizome

*numerous rootlets

#916

*!Water plays a vital part in the nutrition of animals and plants. Water may be purified by boiling. The boiling will kill any germs, which may be present in water. Water is purified by distillation. The water is boiled in flask or boiler, and the steam is condensed back to the liquid condition by passage through a tube about which a continual steam of cold water flows. The liquid which distils or passes over is called the distillate.

Which title is the most suitable one to this passage?

*nutrition

*boiler

*+water

*plants

*steam

#917

*!Graphite is the second crystalline modification of carbon. It is dark – grey in colour, non – transparent, and soft. Graphite is highly resistant to chemical action. When heated in the air, or oxygen, it slowly burns to carbon dioxide. Because of its infusibility, graphite is used in making crucibles which have to stand high temperatures. It is a good conductor of electricity.

Which title is the most suitable one to this passage?

*carbon dioxide

*electricity

*oxygen

*industry

*+graphite

#918

*!Nitrogen is a colourless, transparent, tasteless and inodorous gas. It neither supports combustion, nor burns, Nitrogen does not only combine with oxygen readily, but it does not combine with any other element easily except at a very high temperature, Even such compound which it forms are unstable and easily decomposed.

Which title is the most suitable one to this passage?

*transparent gas

*high temperature

*+nitrogen properties

*oxygen properties

*chemical element