True/False
Positive tropisms are upward, and negative tropisms are downward.
false
If a plant grows toward a light it is an example of
positive phototropism, negative phototropism, gravitropism
positive phototropism
Gymnosperms produce spores and seeds inside
ovaries, cones, fruit, flowers
cones
In the fern plant, which stage of the life cycle do you see most often?
A). gymnosperm B). gametophyte C). angiosperm
gymnosperm
When a plant receives light from only one direction, hormones cause-
1). the stem to grow faster than the roots. 2). the leaves to fall off. 3). the light side of the stem to grow faster than the dark side of the stem. 4). the dark side of the stem to grow faster than the light side of the stem.
The dark side of the stem to grow faster than the light side of the stem.
Long-day plants bloom when the light is bright enough.
false
_______________ plants are not affected by the length of day.
day-neutral, cytokinin, winding, hybrid
day-neutral
A plant that needs thirteen hours of darkness in order to bloom is a ___________________ plant.
long-day, day-neutral, critical-night, short-day
short-day
Which of the following describes the alternation of generations?
The repeating cycle of ______________ and ____________________. Pick two.
gymnosperm structures, angiosperm structures, sporophyte structures, gametophyte structures.
the repeating cycle of gametophyte and sporophyte structures.
There are desert ferns, but why do ferns have a hard time reproducing in the desert?
Ferns need water for the sperm to swim to the eggs to fertilize them.
Plants that do not bloom according to the length of night are called night-neutral plants.
false, they are called day-neutral plants
The __________________ is the structure that produces spores and forms the primary structure of most plants.
sporophyte, gymnosperm, gametophyte
sporophyte
_________________ is the part of moss plant that produces spores.
1). gametophyte (part that produces gametes, which are sperms or eggs). 2). the capsules 3). the sori
the capsules
The ovary of an angiosperm develops into a
flower, spore, sperm, egg, fruit
fruit
Put these steps in the life cycle of a fern in order
1). The fertilized cell grows into a fern. 2). The sori underneath the fronds produces spores. 3). These tiny plants produce sperm and eggs that are used to fertilize. 4). The spores are scattered by the wind and develop into tiny plants.
2, 4, 3, 1
Hormones cause plants to divide and to grow or stop growing.
True
_______________ are the types of plants that produce cones-like pine trees.
gametophyte, angiosperm, gymnosperm
gymnosperm
Gymnosperms need __________ for fertilization so that the pollen may travel from the male cones to female cones.
water, bees, wind, animals
wind
Which plant hormone cause cells to divide?
A). auxins B). abscisic acid. C). cytokinins
cytokinins
When does a seed germinate?
1). when the wind is able to carry the pollen to the eggs or
2). when the right temperature, right moisture, and other necessary conditions occur.
2
Vines climbing a wall is an example of thigmotropism.
true
________________ is the group of plants that produce flowers and fruit.
angiosperm, sporophyte, gametophyte
angiosperm
_____________ and _______________ are the two hormones that influence a plant's shape.
cytokinins and auxins
What part of a gymnosperm produces pollen?
capsules, cones, carpels
cones
Why would a plant need water for sexual reproduction?
The sperm must move to the egg.