Plant Comparative Anatomy and Life Cycles of Land Plants

This set of flashcards covers key concepts related to the comparative anatomy and life cycles of land plants, specifically focusing on adaptations, generations, and reproductive structures.

What is the domain and kingdom classification for land plants?

Domain: Eukarya; Kingdom: Plantae.

What is the direct evolutionary relative/ancestor of land plants?

Green algae.

What is the domain and kingdom classification for land plants?

Domain: Eukarya; Kingdom: Plantae.

What is the direct evolutionary relative/ancestor of land plants?

Green algae.

What are the adaptations that mark the evolution of the major groups of land plants?

Adaptations include structures for water retention, support, reproduction, and nutrient acquisition.

What does alternation of generations mean in the life cycle of land plants?

It describes the shift between the diploid sporophyte generation and the haploid gametophyte generation.

What is the relationship between sporophyte and gametophyte in land plants?

The sporophyte (2n) produces spores (n) that develop into the gametophyte (n), which produces gametes (n) for fertilization.

What is the dominant generation in bryophytes?

The gametophyte generation is dominant.

Where are eggs produced in bryophytes?

Eggs are produced inside the archegonia.

Where are sperm produced in bryophytes?

Sperm are produced inside the antheridia.

Why do bryophytes require external moisture?

Bryophytes require moisture for sperm to swim to the egg for fertilization.

What is the dominant generation in monilophytes (ferns)?

The sporophyte generation is dominant.

What is the heart-shaped prothallus in ferns?

The heart-shaped prothallus is the gametophyte generation.

Into which generation does the zygote develop in ferns?

The zygote develops into the sporophyte generation.

Identify fern sori visually.

Fern sori are clusters of sporangia located on the undersides of fern fronds.

What are fern fronds?

Fern fronds are the large, divided leaves of the fern sporophyte.

What is a fern fiddlehead?

A fern fiddlehead is a young, coiled fern frond.

How can you visually identify the fern sporophyte?

The fern sporophyte is typically larger and more complex than the gametophyte, with developed leaves and roots.

How can you visually identify the fern gametophyte?

The fern gametophyte is small, usually heart-shaped, and produces gametes.