The first known forests on Earth arose in the Middle Devonian (approximately 390 million years ago), with the evolution of cladoxylopsid plants like Calamophyton.[30] Appeared in the Late Devonian, Archaeopteris was both tree-like and fern-like plant, growing to 20 metres (66 ft) in height or more.[31] It quickly spread throughout the world, from the equator to subpolar latitudes.[31] It is the first species known to cast shade due to its fronds and by forming soil from its roots. Archaeopteris was deciduous, dropping its fronds onto the forest floor, the shade, soil, and forest duff from the dropped fronds creating the early forest.[31] The shed organic matter altered the freshwater environment, slowing its flow and providing food. This promoted freshwater fish.[31]

In what era did the first land plants appear?

Cotyledons areMultiple choice question.found on the undersides of fern fronds and contain spores.supported by the gametophyte generation in the gnetophytes.the structures that produce spores in mosses and liverworts.the first leaf structures that arise in the embryo of an angiosperm.

While researching a topic, a student has taken the following notes:New Zealand split up from a supercontinent called Gondwana 85 million years ago.New Zealand is covered with conifer-hardwood and beech forests, both related to the ancient forests of Gondwana.The dominant species in conifer-hardwood forests, podocarp trees, are endemic to New Zealand. New Zealand has 15 podocarp tree species belonging to the Podcarpaceae and the Phyllocladaceae families.Podocarps reproduce using cones that look like berries. The student wants to highlight the families of trees endemic to New Zealand and their history. Which choice most effectively uses relevant information from the notes to accomplish this goal?Splitting off from Gondwana, New Zealand contains two different kinds of forests untouched by time—conifer-hardwood and beech forests.eliminatePodocarp trees are endemic to New Zealand, growing in a forest related to the ancient supercontinent called Gondwana.eliminateEndemic to New Zealand, podocarp trees reproduce using cones that look like berries.eliminateSplit off from a supercontinent 85 million years ago, New Zealand contains two families of trees related to ancient Gondwana species, Podcarpaceae and Phyllocladaceae.

Some of the earliest life that one would expect to find in the Archaean eon would be:Group of answer choicesCyanobacteriaNon-vascular plantsFungiInsects

Evolution of seed habit first started in :-Selaginella like ancestral pteridophytes Psilotum like ancestral pteridophytesGymnosperms    Mosses