A(n) ______________ is a plant that produces seeds that are enclosed in a fruit.
C. angiosperm
Two characteristics of an angiosperm are that they produce ___________ and fruit.
C. flowers
The function of flowers is______________.
C. reproduction
The ____________ of a plant holds up the flower.
A. stem
The ____________ is the green leaf-like structure that covers the bud before the flower blooms.
D. sepal
__________ are the male reproductive part of a flower.
A. stamens
The ___________, which is part of the stamen, holds the pollen grains and the thin stalk called the filament.
C. anther
____________ occurs when pollen travels from the male part of the plant to the stigma.
D. pollination
After pollination, the sperm and egg cell join together in the flower's ___________.
A. ovule
The fertilized egg, or ___________, develops into the embryo part of the seed.
C. zygote
As the seed develops, the __________ changes into the fruit.
B. ovary
Angiosperms are divided into two major groups.
NAME THEM.
moncots and dicots
___________ are angiosperms that have one cotyledon (one seed leaf), parallel leaf veins, scattered bundles of vascular tissue in the stems, and flower parts in threes.
E. monocots
____________ means one seed leaf.
A. cotyledon
____________ are angiosperms that have two cotyledons (two seed leaves), branching leaf veins, circle of vascular tissue, and flower parts in four or fives.
E. dicots
A plant's growth response toward or away from a stimulus is called a ______________.
A. tropism
Name the three important stimuli to which plants respond.
Touch
Light
Gravity
________ is a reponse to touch.
E. thigmotropism
______________ is a response to light.
B. phototropism
_______________ is a plants response to gravity.
E. gravitropism
As a result of gravitropism, roots show a negative response by growing downward.
TRUE
FALSE
FALSE
Roots show a POSITIVE response by growing downard.
As a result of gravitropism, stems show a negative response by growing upward and away from gravitational pull.
TRUE
FALSE
TRUE
A plant ____________ is a chemical that affects how the plant grows and develops.
A. hormone
What two things control germination, the formation of flowers, stems, and leaves, the shedding of leaves, and the development and ripening of fruit.
NAME THEM
tropisms
hormones
_____________ is an important plant hormone that speeds up the rate at which a plant's cells grow and controls a plant's response to light.
E. auxin
Flowering plants that complete their life cycle in one growing season are called _____________.
B. annuals
Angiosperms that complete their life cycle in two years are called _______________.
B. biennials
Flowering plants that live more than two years are called ___________.
