Tag: phanerogams

The term naked seed refers to the absence of an ovary wall, which would otherwise enclose the seed in a fruit.

In gymnosperms, the pollen chamber is a space formed in the nucellus of the ovule where pollen grains are received and germinate before fertilization.

Gymnosperms are heterosporous (c is true). The female gametophyte is multicellular and retained within the megasporangium (b is true). The gametophytes are not independent (a is false).

Pinus longaeva (Great Basin bristlecone pine) is widely recognized as one of the oldest living tree species, with individuals living over 4,000 to 5,000 years.

Gymnosperms are vascular plants that produce seeds but lack the ovary and fruit characteristic of angiosperms.

Gymnosperm wood is typically 'non-porous' because it lacks true vessels, which are the structures that create the 'pores' seen in angiosperm wood.

This appears to be a duplicate of question 496472 with the same options reordered. Gymnosperm wood lacks vessels and is non-porous, while porous woods are characteristics of angiosperms.

Sequoia sempervirens (Coast Redwood) is the tallest tree species in the world and belongs to the gymnosperms.

In gymnosperms, the gametophytes are reduced and dependent on the sporophyte, meaning they do not have an independent free-living existence.

The term 'gymnosperm' was coined by the Greek philosopher Theophrastus to describe plants with naked seeds.