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23 Cards in this Set
- Front
- Back
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Sporophyte stage |
Plants produce spores that eventually develop into gametophytes |
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Gametophyte stage |
Male and female gametophytes produce sex cells needed for a zygote (fertilized egg) |
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Zygote |
Fertilized egg |
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Pollination |
In these plants, pollen (male gametophyte) must travel to female gametophyte to fertilize eggs |
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Ovule |
Female cones have hold an ovule, the structure holding an egg |
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Behavior |
An organisms behaviour is the way reacts to changes in its internal conditions or external environment |
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Instincts |
Some behaviors are learned while some are instincts |
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Mating systems |
Behavior patterns related to mating are called mating systems |
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Pheromones |
Release pheromones (chemical scents) to send messages |
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Aggression |
Behaviors to intimidate or dominate another animal |
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Thigmotropism |
Plants response to trust |
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Gravitropism |
Plants response to gravity |
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Phototropism |
Plants response to light |
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Hormones |
In plants, responses to stimuli are controlled by hormones |
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Tropism |
Plants respond to a stimulus by either growing toward or away from it |
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Internal fertilization |
Occurs when eggs are fertilized inside a females body |
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External fertilization |
Occurs when eggs are fertilized outside a females body |
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How gymnosperms use cones reproduce |
Pollen from male cone carried by wind lands on sticky female cone and fertilizes the egg the zygote develops into a plant embryo seed |
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How angiosperms use flowers and fruits reproduce |
Angiosperms produce flowers and fruit that contain seeds, pollen is produced in the flowers stamen (male reproductive structure), pollination and fertilization occur in the flowers pistil. The angiosperm rely on pollinators. Flowers color and scent helps attract pollinators to help reproduce fruits-the flower develops the fruit. Fruits are the way the angiosperm seeds are dispersed. Animals eat fruits in deposit the seeds in their droppings. Then the seed gets carried by water, wind or its stick to fur or clothing |
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The behaviours animals use to help them reproduce |
Use sounds to attract mates release pheromones (chemical scents) to send messages can involve display of aggression (behavior used to intimidate or dominate another animal) |
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The factors that influence how organisms grow |
- genetic characteristics, access to needed resources, environmental conditions, responses to stimuli |
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Living in groups |
Helps protect young animals from predators Can share parental responsibility |
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Germination |
When the embryo sprouts out of the seed |
