Docsity
Docsity

Prepare for your exams
Prepare for your exams

Study with the several resources on Docsity


Earn points to download
Earn points to download

Earn points by helping other students or get them with a premium plan


Guidelines and tips
Guidelines and tips

Introduction to Plants - Teaching Agriscience - Slides | AG ED 203, Study notes of History of Education

Material Type: Notes; Professor: Dobbins; Class: TEACHING AGRISCIENCE; Subject: AGRICULTURAL EDUCATION; University: Clemson University; Term: Fall 2009;

Typology: Study notes

Pre 2010

Uploaded on 11/05/2009

ckshann
ckshann 🇺🇸

4

(1)

10 documents

1 / 57

Toggle sidebar

This page cannot be seen from the preview

Don't miss anything!

bg1
Introduction Plants
10-20-09
pf3
pf4
pf5
pf8
pf9
pfa
pfd
pfe
pff
pf12
pf13
pf14
pf15
pf16
pf17
pf18
pf19
pf1a
pf1b
pf1c
pf1d
pf1e
pf1f
pf20
pf21
pf22
pf23
pf24
pf25
pf26
pf27
pf28
pf29
pf2a
pf2b
pf2c
pf2d
pf2e
pf2f
pf30
pf31
pf32
pf33
pf34
pf35
pf36
pf37
pf38
pf39

Partial preview of the text

Download Introduction to Plants - Teaching Agriscience - Slides | AG ED 203 and more Study notes History of Education in PDF only on Docsity!

Introduction Plants

What is a plant and why

are they important?

  • (^) A plant is a living organism that has the capacity to make its own food through a process known as photosynthesis. Energy Flow SOLAR ENERGY SUN Food (Chemical energy for plant) Water from soil (moisture) Carbon dioxide from atmosphere

Plants are made of many cells.

  • (^) Some plants, such as trees, grow quite large and live for many years.
  • (^) Some plants are small and may live for only one year, with lettuce and petunias being examples.

Plants are used in many ways.

  • (^) Food—Plants are used to produce human food and animal feed materials.
  • (^) Clothing—Plant fibers are used to produce clothing.
  • (^) Shelter—Plant materials, especially lumber and plywood, are used in building houses and other structures.

Vacuole

  • (^) The is a large sac bound by a membrane.
  • (^) It may occupy up to 90% of the cell.
  • (^) The vacuole contains water, stored foods, salts, pigments, and wastes.
  • (^) Found only in plants.

Cell wall

  • (^) Made of multiple layers of cellulose.
  • (^) Cellulose is a complex sugar molecule.
  • (^) The cell wall thickens and becomes rigid, once cell stops growing.

Definition of Physiology

The study of HOW organs FUNCTION

and the complex CHEMICAL processes

that permit a plant to LIVE, GROW, and

REPRODUCE

© 2005 Thomson Delmar Learning. All rights reserved.

PHOTOSYNTHESIS

Solar energy is converted into chemical energy. CARBON DIOXIDE + WATER light energy and chlorophyll SUGAR + OXYGEN + WATER in the presence of is converted into C 6 H 12 O 6

  • (^) 6O 2
  • 6H 2 O CO 2 H 2
  • O © 2005 Thomson Delmar Learning. All rights reserved.

Respiration

Take in oxygen; give off carbon dioxide.

SUGAR + OXYGEN

CARBON DIOXIDE + WATER + HEAT (energy) 6CO 2

C 6 H 12 O 6

+ 6O

2 6H 2 O is converted into © 2005 Thomson Delmar Learning. All rights reserved.

Soil

Soil offers the plant

  • (^) Air.
  • (^) Water.
  • (^) Nutrients.
  • (^) Support © 2005 Thomson Delmar Learning. All rights reserved.

Air

  • (^) Air or atmosphere surrounding the parts of the plant above the ground.
  • (^) Supplies the carbon dioxide and oxygen required by the plant. © 2005 Thomson Delmar Learning. All rights reserved.

Plant Nutrition

  • (^) There are 16 ESSENTIAL nutrients.
  • (^) These are needed in very large amounts, obtained from the atmosphere and water: - (^) carbon (C) - (^) hydrogen (H) - (^) oxygen (O)
  • (^) Macronutrients are obtained from the soil:
    • (^) nitrogen (N)
    • (^) phosphorus (P)
    • (^) potassium (K)
      • (^) calcium (Ca)
      • (^) magnesium (Mg)
      • (^) sulfur (S) © 2005 Thomson Delmar Learning. All rights reserved.

Ions

Ions are atoms with an electrical charge.

  • (^) Anions—negatively charged ions
  • (^) Cations—positively charged ions
  • (^) Elements such as nitrogen must have the correct electrical charge to be absorbed by the root of the plant. © 2005 Thomson Delmar Learning. All rights reserved.