Botany 2.1
Terms
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- Pollination
- the transfer of pollen from the male anther to the female stigma. Enables fertilization
- Fertilization
- The combination of a male and female gamete which form a zygote.
- Plants pollinated by wind are...
- Usually gymnosperms and some flowering plants (grasses and trees). Flowers are small and groups together. Not very efficient.
- Sexual reproduction is only advantageous if ___ because___.
- it happens with another organism; allows for evolution.
- Animals that pollinate plants are...
- birds, insects, mammals, even some reptiles. Attracted by food (nectar).
- __ dollars of crops are pollinated by bees.
- 15 million
- Asexual reproduction
- 1. no genetic recombination (no sex) 2.genetically the same (clones)
- Sexual reproduction
- 1. Genetic recombination 2. Alteration of Generations 3. Offspring are different from parents and each other.
- A flower is...
- a short stem with 4 modified leaves and holds reproductive parts.
- Flowers have 4 parts arranged in a whorl:
- sepals, petals, carpels, and stamens.
- Carpel
- The female reproductive organs (stigma, styte, and ovary)
- Stamens
- Male reproductive organs (anthers and filament)
- Corola
- All the petals
- Calex
- all the sepals (receptacle)
- The __ is located at the base of the petals
- sepal
- __ flower has all four parts. __ flower is missing one or more parts.
- complete; incomplete
- Perfect flower
- has both male and female parts, regardless of other parts.
- Imperfect Flower
- either the male or female part is missing.