This document provides an overview of the topics that will be covered in the 8th grade science semester 1 curriculum, including the differences between growth and development in plants, the phases of plant growth, germination, and the factors that affect plant growth and development. It discusses the types of plant growth (primary and secondary), the hormones that influence growth, and the internal and external factors like water, temperature, and light that impact plants. The summary covers the key concepts at a high level in 3 sentences.
There are five groups of plant-growth-regulating compounds: auxin, gibberellin (GA), cytokinin, ethylene, and abscisic acid (ABA). For the most part, each group contains both naturally occurring hormones and synthetic substances
There are five groups of plant-growth-regulating compounds: auxin, gibberellin (GA), cytokinin, ethylene, and abscisic acid (ABA). For the most part, each group contains both naturally occurring hormones and synthetic substances
Seed dormancy is defined as a state in which seeds are prevented from germinating even under environmental conditions normally favorable for germination.
These conditions are a complex combination of water, light, temperature, gasses, mechanical restrictions, seed coats, and hormone structures.Seed is a ripe and fertilized ovule that encloses an embryo
It is the connecting link between parents and progeny.
Structurally seeds have four major components,
Seed coat or a protective envelope
Embryo
Reserve food and minerals which provide nourishment
Enzymes and hormones for the digestion of food and formation of new tissues during germination
Seed dormancy is defined as a state in which seeds are prevented from germinating even under environmental conditions normally favorable for germination.
These conditions are a complex combination of water, light, temperature, gasses, mechanical restrictions, seed coats, and hormone structures.Seed is a ripe and fertilized ovule that encloses an embryo
It is the connecting link between parents and progeny.
Structurally seeds have four major components,
Seed coat or a protective envelope
Embryo
Reserve food and minerals which provide nourishment
Enzymes and hormones for the digestion of food and formation of new tissues during germination
Plant hormones or Plant hormones are Auxin, Cytokinin, Gibberellic acid, Abscisic acid and Ethylene. they are also called as Phytohormones or Plant Growth Regulators which play key role in various stages of plant development such as seed germination, shoot formation, root formation, stem elongation, scenescence, abscision, fruit ripining etc.
Materi Induksi Elektromagnetik untuk jenjang SMP.
Mengupas tuntas mengenai pengertian, penyebab dan faktor serata penerapan Induksi Elektromagnetik dalam Teknologi sehari-hari.
2. The differences between Growth and
Development
Phase of growth in plants
Germination
Factors affecting the growth and development
in plants
3. Accretion processes of Process changes to the
the body due to the structure and function
volume of the number of cells a specific
and size of cells Marked changes in
Irreversible form and level of
maturity
reversible
GROWTH DEVELOPMENT
4. 1. Germination, is the emergence of small
plants from seeds
5. 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
6. Type of germination:
Hipogeal, there epikotil elongation so that the
seeds (cotyledons) remain in the soil. For
example in beans, peas, corn, wheat.
7. 2. Primary growth, which is growth in the
longitudinal direction as a result of the
activity of the apical meristem.
Apical meritem:
8. 3. Secondary growth, which is growth in the
direction of widening, the cambium
activity, only occurs in plants dikotil.
10. Gen Water and minerals
Hormone Temperature
Humidity
Light
INTERNAL FACTORS EXTERNAL FACTORS
11. Auksin Mempengaruhi peristiwa:
Turn stems grow
Stimulate the toward light
elongation of stem approaching
cells
Apical dominance,
so that high
growth
Formation of fruit
and flowers Etiolation
13. Sitokinin
inhibits the Aging
Root growth Inhibit the apical dominance
So that the plant did not
raised
14. JENIS HORMON FUNGSI
Absisat acid •inhibit the growth
•cause dormancy
Etilen Stimulates the maturation of fruit
Traumalin Acid Stimulate wound closure