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Science review chapter 2 (22 Cards)

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A fleshy growth of certain fungi that produces spores

mushroom

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A nutrient-rich structure in a seed

cotyledon

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An organism produced from a spore or fertilized egg, in the early stages of development

embryo

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consisting of only one cell

unicellular

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A plant structure that surrounds the seeds of flowering plants

fruit

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The immature salmon that migrates to the ocean and becomes an adult there

smolt

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When the genetic material of two cells unites

fertilization

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A salmon nest

redd

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A young plant

seedling

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Two ways that human activities may harm the salmon by interfering with its life cycle

Building dams that keep salmon from migrating. Building roads and causing soil to run into streams, interfering with the nests of eggs.

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Three places on Earth where you may find bacteria

stomachs of bison, thermal vents, and on your skin

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Explain the life cycle of a mushroom

an adult mushroom has spores in its gills that become airborne due to wind and animals and then land in the soil. If conditions are right, the spores may germinate and form threadlike strands of cells underground. Eventually they form a whole mat of these cells and if two of these mats unite, a mushroom may form and poke up through the soil. The mushroom will continue to grow until it is an adult and its gills produce spores. Then the cycle starts all over again.

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Why are pollinators important in the life cycle of the flowering plant?

Because they carry the pollen that contains half of the plant's genetic material from the stamens (or anthers) to the pistils (or stigmas) so the pollen can grow down into the bottom of the flower and fertilize the eggs (or ovules).

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Reproduction of organisms involves:

offspring, generations of organisms, and genetic material

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What does the Anopheles mosquito transmit to humans?

Malaria

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The life cycle that includes an underground mat of threadlike strands is...

fungal

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The stage of a salmon's life cycle from which it matures into an adult is the . . .

smolt