PHA611 LEC: Introduction

is the scientific study of plants

• non-vascular plant such (ex.: mosses)

• least in common of all terrestrial plants

• no roots

• unable to conduct nutrients (must be attached to host plant)

• Contains “Quinine” used

• for treatment of malaria.

Contains “Vinca” that has anti-cancer properties.

Species having specific features caused them to adapt and reproduce and pass these features to their offspring.

Determine which features are eliminated and passed into next generation.

critical area for research

Has 2 goals:

(1) evaluate human impact in terms of biological diversity, and

(2) to prevent extinction of different species

Seeks to develop new plant products. The creation of genetically modified plants.

• Critical area for research; prevents extinction of species

w/o nuclei

w/ nuclei

w/ chloroplasts

w/o chlorplast

largest group of modern day plants

are also known as flowering plants and having seeds enclosed within their fruit.

conifers

no flowers or fruits and have naked seeds on the surface of their leaves.

• A means of analyzing the physical universe

• Observations are used as the basis for constructing a hypothesis that predicts the outcome of future observations or experiments

• All accepted information can be derived from documented and controlled expt.

• Universe is assumed to be created by or to contain deities

• Improtant feature is that the actions of gods cannot be studied

• Crops might floursih or fail due to god’s intervention to reward or punish people

• Faith as fundamental principle of all religion

• In addition to natural forces, there are supernatural, hidden forces that can never be observed or studied

• Example

  • Luck, bad omens, accurate horoscopes, reliable method for picking the winning numbers in a lottery

• Started with greek philosophers

• Sought to develop logical explanation for simple observation

• Philosophical postulations of atoms by Democritus

• Atom - smallest unit

• No verification, no expt were done

• SUGGEST - basis for a theory

Exchange of emergy and matter with the environment must be present

Organisms absorb energy/matter, convert it to their own bodies and excrete the rest

• Father of Taxonomy

• His system for naming, ranking, and classifying organisms is still in wide use today (with many changes)

evolutionary history of plants

Aspects such as photosynthesis, flowering, and hormones

Relation of structure to functions

Evolutionary relationship of fossil plants to living plants

Plant life cycle, evolution of plants

• Plants relate to the environment, human effects to increased rate of plant extinction

Transfer of genetic information from one generation to the next

study of Algae

study of fungi

disease-causing microorganisms

ornamental plants

important plant compounds

• traditional uses of plants

forest and products

crops and soil management

fruit tree

was a firm believer in the power of experimentation and the scientific method to uncover truth

Give the desc of the facts

Make a tabulation/classification of facts

Accept or reject those facts

the ability of the plant to re-orient the shoot growth towards a direction of light source

a guess, a basis of theory and argument