The stem of a plant is experiencing phototropism. Which statement correctly describes the plant’s response?(1 point)
Responses
The stem moves toward the light for better photosynthesis.
The stem moves toward the light for better photosynthesis.
The stem grows upward because larger cells are growing.
The stem grows upward because larger cells are growing.
The stem moves away from the light for better photosynthesis.
The stem moves away from the light for better photosynthesis.
The stem bends to the sides because there are smaller cells on sides.
The stem bends to the sides because there are smaller cells on sides.
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The correct statement is: The stem moves toward the light for better photosynthesis.
A scientist plants seedlings in different conditions to demonstrate how plants respond to their environment. Which of these observations provides evidence of gravitropism?(1 point)
Responses
Seedlings planted in containers that are tipped over sideways grow sideways.
Seedlings planted in containers that are tipped over sideways grow sideways.
Seedlings planted in containers that are tipped over sideways extend their roots downward.
Seedlings planted in containers that are tipped over sideways extend their roots downward.
Seedlings planted near a stick wrap around the stick.
Seedlings planted near a stick wrap around the stick.
Seedlings planted away from a source of sunlight grow toward the light.
Seedlings planted away from a source of sunlight grow toward the light.
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The correct statement is: Seedlings planted in containers that are tipped over sideways extend their roots downward.
Which condition is most likely to cause a plant to respond with dormancy?(1 point)
Responses
being exposed to cold temperatures
being exposed to cold temperatures
growing by nearby water
growing by nearby water
growing in limited sunlight
growing in limited sunlight
being touched by a stick or branch
being touched by a stick or branch
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The correct statement is: being exposed to cold temperatures.
Which of the following is an abiotic factor of a biome?(1 point)
Responses
trees
trees
birds
birds
insects
insects
water
water
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The correct statement is: water.
Question
The plants in a biome grow very tall. Which statement most likely describes the abiotic factors in the biome?(1 point)
Responses
The biomes’ soil lacks nutrients.
The biomes’ soil lacks nutrients.
The biome has very cold temperatures year round.
The biome has very cold temperatures year round.
The biome has limited rainfall.
The biome has limited rainfall.
The biome receives abundant sunlight
The biome receives abundant sunlight
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The correct statement is: The biome receives abundant sunlight.
Question
Which biome has the following abiotic factors? (cold temperatures, partially frozen soil, varying sunlight throughout the year, precipitation predominantly in the form of snow)(1 point)
Responses
grassland
grassland
desert
desert
tundra
tundra
rainforest
rainforest
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