9. The duration between birth &
death which may be from few
minutes to thousands of years
-Plants show larger growth
than animal due to
meristematic tissue
Ls
Definition
Phases
10. - life span have four phases ---
-1- juvenility –
-age from birth upto
reproduction
-2- maturity –
-when do reproduction
-3-ageing –
-when start deteriration
-4- senescence ---
-when deterioration become
irreversible
-5- death ---
-when senescence leads to death
26. Asexual reproduction or agamogenesis or
agamogeny or somatogenic reproduction----it is a
kind of reproduction involve only one parent in
which meiosis , gamete production , fertilization ,
genetic material transfer & parthenogenesis does
not occur
– rapid increase the number of indivisual [clone]
-No change in clones if there it is due mutation
moneran , protista , plants &
certain animal
- absent in higher
nonvertebratres & vertebrates
