A scientist plants seedlings in different conditions to demonstrate how plants respond to their environment. Which of these observations provides evidence of gravitropism?
A. Seedlings planted in containers that are tipped over sideways grow sideways.
B. Seedlings planted in containers that are tipped over sideways extend their roots downward.
C. Seedlings planted near a stick wrap around the stick.
D. Seedlings planted away from a source of sunlight grow toward the light.
B. 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?
A. being exposed to cold temperatures
B. growing by nearby water
C. growing in limited sunlight
D. being touched by a stick or branch
A. being exposed to cold temperatures
Which of the following is an abiotic factor of a biome?
A. trees
B. birds
C. insects
D. water
D. water
The plants in a biome grow very tall. Which statement most likely describes the abiotic factors in the biome?
A. The biomes’ soil lacks nutrients.
B. The biome has very cold temperatures year round.
C. The biome has limited rainfall.
D. The biome receives abundant sunlight
D. The biome receives abundant sunlight
Which biome has the following abiotic factors? (cold temperatures, partially frozen soil, varying sunlight throughout the year, precipitation predominantly in the form of snow)
A. grassland
B. desert
C. tundra
D. rainforest