SCIENCE
PLANT KINGDOM
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
Pteridophytes
|
|
|
Gymnosperms
|
|
|
Angiosperms
|
|
|
Bryophytes
|
Detailed explanation-1: -Pinus is the largest genus of the Pinaceae, the pine family, which first appeared in the Jurassic period. Based on recent Transcriptome analysis, Pinus is most closely related to the genus Cathaya, which in turn is closely related to spruces. These genera, with firs and larches, form the pinoid clade of the Pinaceae.
Detailed explanation-2: -Pinus are gymnosperms that produce seeds in cones. Their ovules are not enclosed by any ovary wall and thus remain exposed before as well as after fertilisation. Seed plants have a diplohaplontic life cycle that has two phases. The first dominant is the sporophyte phase, and the second is a brief gametophyte phase.
Detailed explanation-3: -Comprising 65 genera and 720 species, the gymnosperms are divided into four extant divisions, Coniferophyta (the conifers), Cycadophyta (the cycads), Ginkgophyta (the ginkgoes), Gnetophyta (the gnetophytes) and two extinct divisions, Pteridospermophyta and Cycadeoidophyta.
Detailed explanation-4: -Cycas. Pinus. Araucaria. Thuja. Cedrus. Picea. Abies. Juniperus. More items