Respriduction Flashcards
DNA
Deoxyribo Nucleicacid
Chromosomes nucleus in for of dna
DNA is information on proteins if changed body design might be altered
Importance of dna copy
Cells chemical reaction to build copies accopined by organised cell structures
Variation
No biochemical process is reliable
May not be identical
Some might be so drastically that the dna might not survive in the cell apparatus
Die
Niche
Well defined place
For an organism to use a particular niche it is important to have dna consistency
Variations help if niche is altered
Survival for the species overtime
Fission example
Amoeba take place in any plane
Leishmania whip like structure definite orientation
Plasmodium multiple
Malarial
Fragmentation who what why examples
Multicellular organisms with simple structures
Spirograph breaks into smaller pieces in maturation these fragments grow into new pieces
Why can’t all multicellular organisms just divide
Specialised cells specialled functions
Sex cells that are meant for reproduction
Regeneration example
Hydra and planarian
Specialised cells
Proliferate to make more cells
Then they become specialised organised sequence
Budding
Hydra
Regenerative cells
Bud outgrowth repeated cell division specific side
Fully mature they detach
Bread mould
Rhizopus, blob on stick , reproduction sporangia spores which have thick walls protect them until they contact another Moises surface and begin to grow again
Vegetative propogation what is
Parts of plant used to develop into new organisms
Methods used in vegetative propagation
Layering parent plant Ariel root, detaches
and grafting parts of different plant together so that they heal
sugarcane rose and grapes
Emir it’s of vegetative propopgatin
Flowers and fruits earlier because it’s from already existing plants
Plants without seeds banan orange jasmine to reproduction
Genetically similar to have all characteristics
Bryophyllum
Leaf margin
Natural
Soil
Role of testosterone
Secondary sexual organ
Sex hormone
Formation of sperm
