GROWTH AND DEVELOPMENT ON

PLANTSCIENCE 8 GRADE

SEMESTER 1

Created by Kak Mayya

The differences between Growth and Development

Phase of growth in plants Germination Factors affecting the growth and

development in plants

LEARNING OBJECTIVES

DIFFERENCES BETWEEN GROWTH AND DEVELOPMENT

GROWTH DEVELOPMENT

Accretion processes of the body due to the volume of the number and size of cells

Irreversible

Process changes to the structure and function of cells a specific

Marked changes in form and level of maturity

reversible

1. Germination, is the emergence of small plants from seeds

Phase of growth in plants

Type of germination:Epigeal, there hipokotil elongation so that seed (cotyledon) elevated above the ground. For example in the green beans, soybeans (the majority of the plants dikotil)

Biar ga lupa....ingat!!!

EDIGEAL

Yang epigeal biasanya dikotil

Type of germination:Hipogeal, there epikotil elongation so that the seeds (cotyledons) remain in the soil. For example in beans, peas, corn, wheat.

2. Primary growth, which is growth in the longitudinal direction as a result of the activity of the apical meristem.

Apical meritem:

3. Secondary growth, which is growth in the direction of widening, the cambium activity, only occurs in plants dikotil.

Primer=memanjang = Meristem

Sekunder=melebar = Kambium

FACTORS AFFECTING

INTERNAL FACTORS EXTERNAL FACTORS

Gen Hormone

Water and minerals Temperature Humidity Light

Auksin

Stimulate the elongation of stem cells

Mempengaruhi peristiwa:

Turn stems grow toward light approaching

Etiolation

Apical dominance, so that high growth

Formation of fruit and flowers

Giberelin

Partenocarp fruit

flowering

Germination

stem grows a giant

Sitokinin

inhibits the Aging

Root growth Inhibit the apical dominanceSo that the plant did not raised

JENIS HORMON FUNGSI

Absisat acid •inhibit the growth•cause dormancy

Etilen Stimulates the maturation of fruit

Traumalin Acid Stimulate wound closure

Hormon Lain