Vocabulary
What is the sticky top of the carpel that receives pollen called?
What are the structures called that contain one or more ovules at the base of the style?
What is the ovary
What are small chemicals made by plant tissues that affect how a plant grows?
What are hormones
What is the colorful structure of a flower that helps to attract birds and insects?
What are petals
What are the growth responses of a plant to its environment called?
What are tropisms
What hormone causes cells to enlarge and slows down cell division?
What is auxin
What do seedless plants require for reproduction?
What is water
What tropism is a plant demonstrating when its stem and leaves turn toward the light?
What is positive phototropism
What is the male part of the flower called?
What are stamen
What hormone inhibits other hormones and prevents seeds from sprouting?
What is abscisic acid
Which plant group is not affected by the length of day?
What is day-neutral
What is the leaflike structure around the petals that protects the developing flower?
What is sepal
Grapevine stems climbing a wood lattice is an example of what tropism?
What is thigmotropism
What is the repeating cycle of gametophytes and sporophyte structures called?
What is alternation of generations
What is a plant stem's response to gravity called?
What is negative gravitropism
What hormone causes fruit to ripen?
What is ethylene
What is the female part of the flower called?
What is a carpel
Is a poinsettia a long-day or short-day plant?
What is a short-day plant
In mosses and ferns, what does a fertilized zygote develop into?
What is a stalk and capsule or sporophyte
What hormone causes trees to close off xylem and phloem to their leaves before they fall?
What is ethylene
Which hormone causes cells to divide?
What is cytokinin
What part of the stamen is pollen produced on?
What is the anther
When a plant receives light from one direction, what do the hormones do to the dark side of the plant?
What is the hormones cause the dark side to grow faster
What part of the flower develops into the seeds?
What is the ovules
When do long-day plants bloom?
What is the nights are shorter than the days