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)
O Seedlings planted in containers that are tipped over sideways grow
Seedlings planted in containers that are tipped over sideways extend their roots downward.
• Seedlings planted near a stick wrap around the stick.
Seedlings planted away from a source of sunlight grow toward the light.
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)
• being exposed to cold temperatures
• growing by nearby water
• growing in limited sunlight
• being touched by a stick or branch
Being exposed to cold temperatures is most likely to cause a plant to respond with dormancy.
Which of the following is an abiotic factor of a biome? (1 point)
• trees
• birds
• insects
• water
Water is an abiotic factor of a biome.
The plants in a biome grow very tall. Which statement most likely describes the abiotic factors in the biome? (1 point)
• The biomes' soil lacks nutrients.
• The biome has very cold temperatures year round.
• The biome has limited rainfall.
• The biome receives abundant sunlight