click below
click below
Normal Size Small Size show me how
Reproduction
16.3 Flowers and Types of reproduction
Question | Answer |
---|---|
female reproductive part of a flower | pistil |
male reproductive part of a flower | stamen |
stem-like structure of a stamen | filament |
top portion of a stamen | anther |
sticky top of a pistil | stigma |
the stem-like part of a pistil | style |
the bottom of a pistil | ovary |
What is the function of the ovary? | produce eggs (ovules) |
process of pollen from an anther contacting the stigma of a pistil | pollination |
union of a sperm nucleus and an egg nucleus | fertilization |
What must happen after pollination before fertilization can occur? | Sperm nuclei must travel down the pollen tubes and into the ovary |
a structure that developed from the ovary of a flower; it protects seeds and can assist in dispersal | fruit |
How do flowers promote their own pollination? | bright petal colors, unique aromas, patterns on petals, open funnel-like shape |
What will a fertilized egg (ovule) develop into? | a seed |
reproduction with one parent, in which the offspring are identical to the parent | asexual reproduction |
reproduction with a male and female sex cells (sperm and egg cells)- offspring is not identical to either parent | sexual reproduction |
examples of asexual reproduction | budding (Hydra), binary fission (amoeba, bacteria, etc), regeneration (worms, etc) |
advantages of asexual reproduction | convenient - only one parent; takes less energy/investment |
disadvantages of asexual reproduction | cannot improve the quality of the species - always identical; more difficult to adapt to changing environment |
examples of sexual reproduction | pollination and fertilization of flowers to produce seeds; mating of animals, even hermaphrodites |
what is a hermaphrodite? | an animal with both male and female parts |