Life Cycle of a Conifer

Question 1 of 4

Animation 28.1 Quiz

In conifers, male gametophytes are called _______ and are formed by the division of microspores.

megasporangia

strobili

pollen

zygotes

Correct. See Key Concept 28.2 Once Dominant Gymnosperms Still Thrive in Some Environments

Incorrect. See Key Concept 28.2 Once Dominant Gymnosperms Still Thrive in Some Environments

Animation 28.1 Quiz

Which statement describes events leading to formation of offspring in the conifer life cycle?

A haploid pollen grain produced by the male sporophyte enters the female sporophyte and fuses with a haploid megasporangium.

A diploid sperm from pollen enters the female gametophyte and fuses with a diploid egg.

A diploid pollen grain produced by the male sporophyte enters the female sporophyte and fuses with a haploid megasporangium.

A haploid sperm from pollen enters the female gametophyte and fuses with a haploid egg.

Correct. See Key Concept 28.2 Once Dominant Gymnosperms Still Thrive in Some Environments

Incorrect. See Key Concept 28.2 Once Dominant Gymnosperms Still Thrive in Some Environments

Animation 28.1 Quiz

How do the sporophyte and gametophyte generations compare in a conifer?

The sporophyte generation is much larger than the gametophyte generation and the two generations grow as independent structures.

The sporophyte generation is much smaller than the gametophyte generation and the two generations grow as independent structures.

The sporophyte generation is much larger than the gametophyte generation and the two generations grow in a single individual.

The sporophyte generation is much smaller than the gametophyte generation and the two generations grow in a single individual.

Correct. See Key Concept 28.2 Once Dominant Gymnosperms Still Thrive in Some Environments

Incorrect. See Key Concept 28.2 Once Dominant Gymnosperms Still Thrive in Some Environments

Animation 28.1 Quiz

Refer to the table below.

The table lists structures associated with portions of the life cycle in a conifer. Where on this table could an arrow be placed to indicate when meiosis occurs?

In between the two columns under the sporophyte heading

In between the sporophyte and gametophyte headings

In between the two columns under the gametophyte heading

At no point in this table

Correct. See Key Concept 28.2 Once Dominant Gymnosperms Still Thrive in Some Environments

Incorrect. See Key Concept 28.2 Once Dominant Gymnosperms Still Thrive in Some Environments

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Chapter 1. Life Cycle of a Conifer