A homeowner noticed moss growing between bricks on his...

Name: Problem 5, Chapter 28: Biology: The Dynamic Science
Uploaded: 2021-07-29T01:54:45-08:00
Duration: 1 min 19 s
Channel: Joanna Quigley
Description: A homeowner noticed moss growing between bricks on his patio. Closer examination revealed tiny brown stalks with cuplike tops emerging from green leaflets. These brown structures were: a. the sporophyte generation. b. the gametophyte generation. c. elongated haploid reproductive cells. d. archegonia. e. antheridia.

A homeowner noticed moss growing between bricks on his patio. Closer examination revealed tiny brown stalks with cuplike tops emerging from green leaflets. These brown structures were: a. the sporophyte generation. b. the gametophyte generation. c. elongated haploid reproductive cells. d. archegonia. e. antheridia.

A homeowner noticed moss growing between bricks on his patio. Closer examination revealed tiny brown stalks with cuplike tops emerging from green leaflets. These brown structures were:
a. the sporophyte generation.
b. the gametophyte generation.
c. elongated haploid reproductive cells.
d. archegonia.
e. antheridia.

Labs

Want to see this concept in action?

NEW

Explore this concept interactively to see how it behaves as you change inputs.

View Labs

Key Concepts

Sporophyte Generation

In mosses, the sporophyte generation is the diploid phase that grows from the gametophyte and is typically non-photosynthetic. It produces spores through meiosis within a capsule or cup-like structure. The brown stalks with cuplike tops observed in moss are a characteristic expression of the sporophyte, highlighting its role in disseminating spores.

Alternation of Generations

Many plants, including mosses, have a life cycle that alternates between two distinct generations: a haploid gametophyte and a diploid sporophyte. This cycle is central to understanding plant reproduction and development because it involves both sexual and asexual phases, with each generation playing a unique role in the continuity of the species.

Gametophyte Generation

The gametophyte generation is the dominant, green, photosynthetic stage in the life cycle of mosses. It produces gametes (sperm and eggs) and provides the substrate upon which the sporophyte develops. Understanding the gametophyte’s role helps differentiate it from the sporophyte, which is responsible for spore production.

Transcript

Please give Ace some feedback