Reproduction (Grade 11 NSC Matric Life Sciences): Flashcards
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Plant reproductive evolution sequence (4 groups)
Plant reproductive evolution sequence (4 groups)
Bryophytes → pteridophytes → gymnosperms → angiosperms
Why bryophytes need water for reproduction
Why bryophytes need water for reproduction
Sperm cells must swim to reach egg cells
Key advancements in pteridophytes
Key advancements in pteridophytes
Vascular tissue & waxy cuticle
How gymnosperms/angiosperms avoid needing water for fertilisation
How gymnosperms/angiosperms avoid needing water for fertilisation
Pollen grains protect & transport sperm cells
Genetic nature of asexual reproduction offspring
Genetic nature of asexual reproduction offspring
Genetically identical to parent
Main advantage of sexual reproduction in plants
Main advantage of sexual reproduction in plants
Genetic diversity in offspring
Four whorls of a flower (outermost to innermost)
Four whorls of a flower (outermost to innermost)
Calyx, corolla, androecium, gynoecium
Components of the stamen (male part)
Components of the stamen (male part)
Filament & anther
Components of pistil (female part)
Components of pistil (female part)
Stigma, style, & ovary
Requirement for fruit development in flowers
Requirement for fruit development in flowers
Fertilisation must occur first