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The Following Diagram Depicts the Life Cycle of a Cherry

Question 82

Matching

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.

Premises:

Responses:

Which stage is indicated by label 6?

pollen grains are released from the anther when the pollen sacs split open

pollen sacs form in an anther

an ovule forms in the ovary; a cell in the ovule enlarges

pollen grain lands on a receptive stigma and germinates

three megaspores disintegrate; in the remaining megaspore, three rounds of mitosis
with no cytoplasmic division result in a single cell with eight haploid nuclei

four haploid ( n )megaspores form by meiosis and cytoplasmic division of the enlarged cell in the ovule

uneven cytoplasmic divisions produce a seven-celled female gametophyte

the pollen tube reaches the ovule, penetrates it, and releases two sperm cells; double fertilization occurs

mitosis of a microspore followed by differentiation results in a two-celled pollen grain

four haploid ( n )microspores form by meiosis and cytoplasmic division of a cell in the pollen sac

Premises:

Which stage is indicated by label 6?

Responses:

pollen grains are released from the anther when the pollen sacs split open

pollen sacs form in an anther

an ovule forms in the ovary; a cell in the ovule enlarges

pollen grain lands on a receptive stigma and germinates

three megaspores disintegrate; in the remaining megaspore, three rounds of mitosis
with no cytoplasmic division result in a single cell with eight haploid nuclei

four haploid ( n )megaspores form by meiosis and cytoplasmic division of the enlarged cell in the ovule

uneven cytoplasmic divisions produce a seven-celled female gametophyte

the pollen tube reaches the ovule, penetrates it, and releases two sperm cells; double fertilization occurs

mitosis of a microspore followed by differentiation results in a two-celled pollen grain

four haploid ( n )microspores form by meiosis and cytoplasmic division of a cell in the pollen sac

Correct Answer:

Premises:

Responses:

pollen grains are released from the anther when the pollen sacs split open

pollen sacs form in an anther

an ovule forms in the ovary; a cell in the ovule enlarges

pollen grain lands on a receptive stigma and germinates

three megaspores disintegrate; in the remaining megaspore, three rounds of mitosis
with no cytoplasmic division result in a single cell with eight haploid nuclei

four haploid ( n )megaspores form by meiosis and cytoplasmic division of the enlarged cell in the ovule

uneven cytoplasmic divisions produce a seven-celled female gametophyte

the pollen tube reaches the ovule, penetrates it, and releases two sperm cells; double fertilization occurs

mitosis of a microspore followed by differentiation results in a two-celled pollen grain

four haploid ( n )microspores form by meiosis and cytoplasmic division of a cell in the pollen sac