Growth and development
Transcript of Growth and development
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