Plants have two defining features: protected embryos and multicellular life cycles alternating between haploid and diploid phases. Key adaptations for terrestrial life include a waxy cuticle and stomata to prevent desiccation, leaves that increase photosynthetic area, and a dominant vertical diploid generation. Angiosperms are flowering plants whose ovules are enclosed in diploid tissue during pollination, and whose carpels develop into fruit. Angiosperm flowers have sepals, petals, stamens with pollen-bearing anthers and filaments, and a gynoecium of one or more carpels housing the female gametophyte.

1. Plants

2. Defining Plants
Land plants have two major features
1. Protected embryos
2. Multicellular haploid and diploid phases
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3. Defining Plants
Adaptations to terrestrial life
1. Protection from desiccation by a waxy
cuticle and stomata
2. Evolution of leaves which increase
photosynthetic surface area
3. Shift to a dominant vertical diploid
generation
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4. Angiosperms
Angiosperms are the flowering plants
-Ovules are enclosed in diploid tissue at the
time of pollination
-The carpel, a
modified leaf that
covers seeds,
develops into fruit
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5. Angiosperms
Flower morphology
-Outermost whorl = Sepals
-Second whorl = Petals
-Third whorl = Stamens (androecium)
-Each stamen has a pollen-bearing
anther and a filament (stalk)
-Innermost whorl = Gynoecium
-Consists of one or more carpels that
house the female gametophyte 5

6. Angiosperms
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7. Angiosperms
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