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Alle Oberthemen / Science / Life cycles

Science review chapter 2 (22 Karten)

Sag Danke
1
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A fleshy growth of certain fungi that produces spores
mushroom
2
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A nutrient-rich structure in a seed
cotyledon
3
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An organism produced from a spore or fertilized egg, in the early stages of development
embryo
4
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consisting of only one cell
unicellular
5
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A plant structure that surrounds the seeds of flowering plants
fruit
6
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The immature salmon that migrates to the ocean and becomes an adult there
smolt
7
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When the genetic material of two cells unites
fertilization
8
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A salmon nest
redd
9
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A young plant
seedling
10
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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.
11
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Three places on Earth where you may find bacteria
stomachs of bison, thermal vents, and on your skin
12
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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.
13
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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).
14
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Reproduction of organisms involves:
offspring, generations of organisms, and genetic material
15
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What does the Anopheles mosquito transmit to humans?
Malaria
16
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The life cycle that includes an underground mat of threadlike strands is...
fungal
17
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The stage of a salmon's life cycle from which it matures into an adult is the . . .
smolt
18
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The part of the seed that feeds the growing embryo.
cotyledon
19
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Fungi grows best in
warm and moist places
20
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Adding vinegar to the water in the brine shrimp experiment is an example of what type of variable?
independent
21
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A fish ladder's purpose is. . .
To help salmon find their way back home.
22
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Bacteria grow. .
almost everywhere
Kartensatzinfo:
Autor: Rebecca
Oberthema: Science
Thema: Life cycles
Schule / Uni: Freedom Baptist Schools
Ort: Hudsonville, MI
Veröffentlicht: 03.02.2010
Tags: rebecca thomas
 
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