Exam 29: Life Cycles of Flowering Plants

The following diagram depicts the life cycle of a cherry, a eudicot. Match the specified labels in the diagram with the corresponding life cycle stage. a.The pollen tube reaches the ovule, penetrates it, releases two sperm cells, and double fertilization occurs. b.Mitosis of a microspore followed by differentiation results in a two-celled pollen grain. c.Three megaspores disintegrate; in the remaining megaspore, three rounds of mitosis without cytoplasmic divisions produce a single cell with eight haploid nuclei. d.Pollen grain lands on a receptive stigma and germinates. e.An ovule forms in the ovary and a cell in the ovule enlarges. f.Pollen sacs form in an anther. g.Four haploid (n ) megaspores form by meiosis of the enlarged cell in the ovule. h.Four haploid (n ) microspores form by meiosis of a cell in the pollen sac. i.Uneven cytoplasmic divisions produce a seven-celled female gametophyte. j.When the pollen sacs split open, the anther releases pollen grains. -Which stage is indicated by label 9?

Matching Match the plant hormone with its description. -inhibits gibberellin synthesis in seed germination A)ethylene B)cytokinin C)auxin D)abscisic acid E)gibberellin

Matching Match the plant hormone with its description. -mediates tropisms A)ethylene B)cytokinin C)auxin D)abscisic acid E)gibberellin

The following diagram depicts the life cycle of a cherry, a eudicot. Match the specified labels in the diagram with the corresponding life cycle stage. a.The pollen tube reaches the ovule, penetrates it, releases two sperm cells, and double fertilization occurs. b.Mitosis of a microspore followed by differentiation results in a two-celled pollen grain. c.Three megaspores disintegrate; in the remaining megaspore, three rounds of mitosis without cytoplasmic divisions produce a single cell with eight haploid nuclei. d.Pollen grain lands on a receptive stigma and germinates. e.An ovule forms in the ovary and a cell in the ovule enlarges. f.Pollen sacs form in an anther. g.Four haploid (n ) megaspores form by meiosis of the enlarged cell in the ovule. h.Four haploid (n ) microspores form by meiosis of a cell in the pollen sac. i.Uneven cytoplasmic divisions produce a seven-celled female gametophyte. j.When the pollen sacs split open, the anther releases pollen grains. -Which stage is indicated by label 4?

Match the flower parts with the descriptions, in reference to the diagram. a.carpel b.corolla c.stamen d.receptacle e.calyx -the ring of sepals; a single sepal indicated by label 2

In a eudicot, what causes the hypocotyl to straighten upon emergence form the soil?

Matching Match the plant hormone with its description. -promotes development of lateral buds A)ethylene B)cytokinin C)auxin D)abscisic acid E)gibberellin

The following diagram depicts the life cycle of a cherry, a eudicot. Match the specified labels in the diagram with the corresponding life cycle stage. a.The pollen tube reaches the ovule, penetrates it, releases two sperm cells, and double fertilization occurs. b.Mitosis of a microspore followed by differentiation results in a two-celled pollen grain. c.Three megaspores disintegrate; in the remaining megaspore, three rounds of mitosis without cytoplasmic divisions produce a single cell with eight haploid nuclei. d.Pollen grain lands on a receptive stigma and germinates. e.An ovule forms in the ovary and a cell in the ovule enlarges. f.Pollen sacs form in an anther. g.Four haploid (n ) megaspores form by meiosis of the enlarged cell in the ovule. h.Four haploid (n ) microspores form by meiosis of a cell in the pollen sac. i.Uneven cytoplasmic divisions produce a seven-celled female gametophyte. j.When the pollen sacs split open, the anther releases pollen grains. -Which stage is indicated by label 5?

_____ emitted by ripening fruits and maturing seeds results in abscission.

Which of the following nourishes the growing embryo during germination?

What is the main trigger for flowering?

Match the fruit with its description. -true fruit; a simple, dry fruit A)pea pod B)cherry C)pineapple D)strawberry E)blackberry

Match the fruit with its description. -accessory fruit; a multiple fruit formed by the fusion of small, fleshy berries A)pea pod B)cherry C)pineapple D)strawberry E)blackberry

Match the flower parts with the descriptions, in reference to the diagram. a.carpel b.corolla c.stamen d.receptacle e.calyx -the structures that produce female gametophytes; indicated by label 5

The compounds involved in gravitropism are ____.

In a flowering plant life cycle, which process is used to form spores?

What plant hormone has a central role in barley seed germination?

The following diagram depicts the life cycle of a cherry, a eudicot. Match the specified labels in the diagram with the corresponding life cycle stage. a.The pollen tube reaches the ovule, penetrates it, releases two sperm cells, and double fertilization occurs. b.Mitosis of a microspore followed by differentiation results in a two-celled pollen grain. c.Three megaspores disintegrate; in the remaining megaspore, three rounds of mitosis without cytoplasmic divisions produce a single cell with eight haploid nuclei. d.Pollen grain lands on a receptive stigma and germinates. e.An ovule forms in the ovary and a cell in the ovule enlarges. f.Pollen sacs form in an anther. g.Four haploid (n ) megaspores form by meiosis of the enlarged cell in the ovule. h.Four haploid (n ) microspores form by meiosis of a cell in the pollen sac. i.Uneven cytoplasmic divisions produce a seven-celled female gametophyte. j.When the pollen sacs split open, the anther releases pollen grains. -Which stage is indicated by label 10?

The following diagram depicts the life cycle of a cherry, a eudicot. Match the specified labels in the diagram with the corresponding life cycle stage. a.The pollen tube reaches the ovule, penetrates it, releases two sperm cells, and double fertilization occurs. b.Mitosis of a microspore followed by differentiation results in a two-celled pollen grain. c.Three megaspores disintegrate; in the remaining megaspore, three rounds of mitosis without cytoplasmic divisions produce a single cell with eight haploid nuclei. d.Pollen grain lands on a receptive stigma and germinates. e.An ovule forms in the ovary and a cell in the ovule enlarges. f.Pollen sacs form in an anther. g.Four haploid (n ) megaspores form by meiosis of the enlarged cell in the ovule. h.Four haploid (n ) microspores form by meiosis of a cell in the pollen sac. i.Uneven cytoplasmic divisions produce a seven-celled female gametophyte. j.When the pollen sacs split open, the anther releases pollen grains. -Which stage is indicated by label 7?

The following diagram depicts the life cycle of a cherry, a eudicot. Match the specified labels in the diagram with the corresponding life cycle stage. a.The pollen tube reaches the ovule, penetrates it, releases two sperm cells, and double fertilization occurs. b.Mitosis of a microspore followed by differentiation results in a two-celled pollen grain. c.Three megaspores disintegrate; in the remaining megaspore, three rounds of mitosis without cytoplasmic divisions produce a single cell with eight haploid nuclei. d.Pollen grain lands on a receptive stigma and germinates. e.An ovule forms in the ovary and a cell in the ovule enlarges. f.Pollen sacs form in an anther. g.Four haploid (n ) megaspores form by meiosis of the enlarged cell in the ovule. h.Four haploid (n ) microspores form by meiosis of a cell in the pollen sac. i.Uneven cytoplasmic divisions produce a seven-celled female gametophyte. j.When the pollen sacs split open, the anther releases pollen grains. -Which stage is indicated by label 6?