Q.What are the two groups of symbionts found in Lichens?

Palaeobotany is the study of fossil (ancient) plants; it reveals plant evolution, ancestry and past climates, and aids in locating coal/petroleum.

Palaeobotany (palaeo = ancient) is the branch of botany that studies the plants of the geological past, which are preserved as fossils in the rocks of the earth's crust.

Uses of Palaeobotany:

1. It traces the evolution of plants and provides evidence for the origin and descent of present-day plant groups.
2. It helps establish the phylogeny (evolutionary relationships) and ancestry of living plants.
3. Fossil plants reveal the climate and vegetation of past ages, helping reconstruct the earth's geological and climatic history. …

Palaeobotany is the study of fossil (ancient) plants; it is useful for understanding plant evolution and past environments.

Meaning:

• Palaeobotany (palaeo = ancient, botany = study of plants) is the branch of botany that deals with the study of plants that lived in the geological past, preserved as fossils in rocks.

Uses of Palaeobotany:

• It provides direct evidence of evolution by showing the sequence in which different plant groups appeared on the Earth.
• It helps establish the evolutionary relationships (phylogeny) among various plant groups.
• It helps reconstruct the climate, geography and vegetation of past ages. …

Palaeobotany = study of plant fossils; used to trace plant evolution and past climates.

Palaeobotany (Greek: palaios = ancient) is the branch of botany concerned with the study of fossils of plants — i.e., plants (or their impressions/remains) preserved in rocks, coal, amber, or sediment from earlier geological periods.

Uses:

1. It helps reconstruct the evolutionary history of plants — showing how present-day plant groups arose from ancestral forms over geological time.
2. It provides evidence about past climatic conditions and geography (palaeoclimatology/palaeogeography), since the kind of vegetation that grew in an area reflects the climate of that time. …