Hornworts differ from mosses and liverworts in containing:

a. small leaves
b. photosynthetic sporophytes
c. gametphytes
d. sporophytes
e. spores

Well, First I thought ok its small leaves and that was wrong. Next I thought it would be spores and that was wrong. My next guess would be photosynthetic sporophytes, but I don't want to be wrong again. Is that correct or can you guide me in the right direction please?

http://en.wikipedia.org/wiki/Hornwort

You are right this time.

Of course! I can help guide you in the right direction. In order to determine the correct answer, let's review the characteristics of hornworts, mosses, and liverworts.

All three of these plant groups, hornworts, mosses, and liverworts, belong to the division Bryophyta. They are non-vascular plants, meaning they lack specialized tissues for transporting water and nutrients. However, they do have some differences.

Mosses and liverworts have dominant gametophyte phases, meaning they spend the majority of their life cycle as gametophytes. The gametophyte is the haploid, sexual phase of the plant that produces gametes (sperm and eggs) for reproduction.

Now, let's look at hornworts. Hornworts are similar to mosses and liverworts in that they also have a dominant gametophyte phase. However, hornworts differ from mosses and liverworts in containing photosynthetic sporophytes.

Sporophytes are the diploid, asexual phase of the plant that produces spores for reproduction. Mosses and liverworts have non-photosynthetic sporophytes that depend on the gametophyte for nutrition. In contrast, hornworts have sporophytes that are photosynthetic, meaning they can produce their own food through photosynthesis.

Therefore, based on the information provided, the correct answer is b. photosynthetic sporophytes. Hornworts differ from mosses and liverworts in containing photosynthetic sporophytes.

The correct answer is b. photosynthetic sporophytes.

Hornworts differ from mosses and liverworts in that they have photosynthetic sporophytes. Sporophytes are the diploid, or non-sexual, phase of the plant life cycle that produces spores. In hornworts, the sporophyte is capable of conducting photosynthesis, while in mosses and liverworts, the sporophyte is dependent on the gametophyte for nutrition and lacks the ability to produce its own food through photosynthesis. This is the main distinguishing feature that sets hornworts apart from mosses and liverworts.