LESSON 1 Flashcards
PLANT ORGAN SYSTEM
2 scientist
- John Evelyn
- Alexander Von Humboldt
Plants have two main organ systems
-shoot system
-root system
biological process of producing offspring of the same type and species.
Reproduction
TYPES OF REPRODUCTION
-ASEXUAL REPRODUCTION
-SEXUAL REPRODUCTION
requires genetic material only from one parent
Asexual reproduction
producing genetically identical offspring
clones
TYPES OF ASEXUAL REPRODUCTION
-VEGETATIVE PROPAGATION
-FRAGMENTATION
-APOMIXIS
Offspring grow from a part of the parent plant (simple process)
VEGETATIVE PROPAGATION
New plants are grown from parts of the parent plant that fall to the ground, like a fallen leaf or broken stem
FRAGMENTATION
Seeds are produced without fertilization
APOMIXIS
there is no fusion of male and female gametes (no pollination or fertilization)
APOMIXIS
resulting offspring are genetically identical (clones) to the parent plant
APOMIXIS
involves the participation of two parents
SEXUAL REPRODUCTION
offspring are produced by combining the genetic material of male and female sex cells or gametes through fertilization.
SEXUAL REPRODUCTION
2 PROCESSES OF SEXUAL REPRODUCTION
-POLLINATION
-FERTILIZATION
deposition or transfer of pollen from anther to the stigma of the same flower or another flower.
POLLINATION
It happens when the pollen gets deposited from anther to the stigma of the same flower or another of the same plant
SELF POLLINATION
It happens when the pollen gets deposited from anther to the stigma of the same flower of the same plant
autogamy
It happens when the pollen gets deposited from anther to the stigma of the another flower of the same plant
geitonogamy
It is the transfer of pollen from the anther of one plant to the stigma of another plant with the help of pollinating agents like water, air, and insects.
CROSS POLLINATION
transfer of pollen from the anther of one plant to the stigma of another plant
xenogamy
This is the most important stage of sexual reproduction, as it leads to the formation of seeds, which give rise to new plants
FERTILIZATION
is the increase in size or mass of a plant.
PLANT GROWTH
It involves two key processes
cell division and cell elongation.
