Question

Retention of the female gametophyte with a growing young embryo on the parent sporophyte for a period of time is first recognized in evolutionary terms in

• A. Gymnosperms
• B. Liverworts
• C. Mossess
• D. Pteridophytes

Answer 1

The correct option is D

Pteridophytes

The correct option is D.

Explanation for correct option:

1. In Pteridophytes, the female gametophyte with the developing young embryo is kept on the sporophyte plant body for a varied amount of time.
2. During evolution, it is thought to have been the forerunner of seed habit.

Explanation for incorrect options:

Option A:

1. Gymnosperms are members of the Plantae kingdom and the Embryophyta sub-kingdom.
2. They are thought to have developed some 390 million years ago, during the Paleozoic era.

Option B:

1. Liverworts are a diverse collection of tiny, terrestrial herbaceous plants that number in the thousands.
2. They live in a range of environments, including riverbank soil, footpaths, rocks, and trees, among others.
3. They may be found all across the world, but are particularly abundant in the southern rainforests.

Option C:

1. Mosses are non-flowering plants with stems and leaves but no genuine roots.
2. They release spores and have stalks and leaves but no true roots.
3. Mosses are classed as Bryophyta (bryophytes) in the plant world, together with liverworts and hornworts.

Final Answer: Retention of the female gametophyte with a growing young embryo on the parent sporophyte for a period of time is first recognized in evolutionary terms in Pteridophytes.