Botany Unit 1

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Botany

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The scientific study of plants.

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Botany

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Also known as Plant Biology.

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Long before humans

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How long do plants existed on earth.

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Since STONE AGE

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When did studying of plants started?

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Stone Age;

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Time when humans were not yet conscious on the scientific bases for utilizing plants and were mostly concerned� with just utilizing plants for food.

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The scientific nature of Botany;

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is attributed to its nature as a branch of science

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Botany

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As a science it follows the scientific method.

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Scientific Method

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every inquiry about plants follows a step-by-step method in order to achieve a conclusion.

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1. Observation2. Following of Hypothesis3. Expirementation4. Data Gathering 5. Data Analysis6. Drawing of Conclusion

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What are the step-by -step scientific methods?

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Observation

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utilizing one’s senses to generate questions or problems.

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Observation

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Driven by curiosity.

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Formulation of Hypothesis

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coming up with an educated guess.

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Experimentation

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testing of the hypothesis.

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Data Gathering

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descriptive, numerical and other forms of data are obtained and organized .

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Data Analysis

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data are analyzed and interpreted

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Drawing of Conclusion

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come up with the decision to accept or reject the hypothesis

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6 Branches of Anatomy

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1. Plant taxonomy and systematics

2. Plant morpho- anatomy

3. Plant physiology

4. Plant ecology

5. Plant genetics

6. Economics/ ethnobotany

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Plant taxonomy and systematics

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naming and phylogeny-based classification

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Plant morpho-anatomy

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external form, internal structure and development of plant organs

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Plant physiology

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cellular metabolism and plant function

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Photosynthesis, Respiration, Water-related processes

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Under what branch of botany are these functions found?

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Plant ecology

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plant-plant and plant-environment interaction

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Plant Genetics

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heredity and molecular biology

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DNA, RNA, Proteins

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Plant genetics

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DNA, RNA, Proteins

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Plant Genetics examples

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Economics/ Ethnobotany

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practical uses of plants

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1.3 Our dependence to plants

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We might take it for granted, but plants actually “touch” almost every aspect of our lives.

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1. Plants produce the oxygen2. The presence of oxygen in the atmosphere allowed the Earth to become habitable.3. Plants as source of medicine. 4. Plants as food.5. Plants as source materials for the industries.

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5 dependence and importance to plants.

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Plants

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photosynthetic organisms, have the ability to split water molecules to produce oxygen.

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Plant diversification on land

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allowed the initially barren soil to become filled with organic matter and oxygen became very abundant in the atmosphere.

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the early land plants

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The initial ‘greening’ of the earth was attributed to

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Read Our Dependence on Plants

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...

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Plants

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are nature’s greatest chemist.

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Plants as source of medicine.

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A multitude of chemical compounds are naturally produced by plants which humans have utilized in the pharmaceutical industry.