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The Following Diagram Depicts the Life Cycle of a Cherry

Question 62

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 8?

Pollen grain lands on a receptive stigma and germinates.

Which stage is indicated by label 2?

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

Which stage is indicated by label 1?

Pollen sacs form in an anther.

Which stage is indicated by label 10?

Four haploid ( n ) microspores form by meiosis of a cell in the pollen sac.

Which stage is indicated by label 3?

An ovule forms in the ovary and a cell in the ovule enlarges.

Which stage is indicated by label 5?

Four haploid ( n ) megaspores form by meiosis of the enlarged cell in the ovule.

Which stage is indicated by label 4?

Three megaspores disintegrate; in the remaining megaspore, three rounds of mitosis without cytoplasmic divisions produce a single cell with eight haploid nuclei.

Which stage is indicated by label 6?

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

Which stage is indicated by label 9?

When the pollen sacs split open, the anther releases pollen grains.

Which stage is indicated by label 7?

Uneven cytoplasmic divisions produce a seven-celled female gametophyte.

Premises:

Which stage is indicated by label 8?

Which stage is indicated by label 2?

Which stage is indicated by label 1?

Which stage is indicated by label 10?

Which stage is indicated by label 3?

Which stage is indicated by label 5?

Which stage is indicated by label 4?

Which stage is indicated by label 6?

Which stage is indicated by label 9?

Which stage is indicated by label 7?

Responses:

Pollen grain lands on a receptive stigma and germinates.

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

Pollen sacs form in an anther.

Four haploid ( n ) microspores form by meiosis of a cell in the pollen sac.

An ovule forms in the ovary and a cell in the ovule enlarges.

Four haploid ( n ) megaspores form by meiosis of the enlarged cell in the ovule.

Three megaspores disintegrate; in the remaining megaspore, three rounds of mitosis without cytoplasmic divisions produce a single cell with eight haploid nuclei.

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

When the pollen sacs split open, the anther releases pollen grains.

Uneven cytoplasmic divisions produce a seven-celled female gametophyte.

Correct Answer:

Premises:

Responses:

Which stage is indicated by label 8?

Which stage is indicated by label 2?

Which stage is indicated by label 1?

Which stage is indicated by label 10?

Which stage is indicated by label 3?

Which stage is indicated by label 5?

Which stage is indicated by label 4?

Which stage is indicated by label 6?

Which stage is indicated by label 9?

Which stage is indicated by label 7?