What do you mean by leptosporangiate and eusporangiate Fern?

1. eusporangiate – (of ferns) having sporangia that arise from a group of epidermal cells; “eusporangiate ferns of the families Ophioglossaceae and Marattiaceae” leptosporangiate – (of ferns) having each sporangium formed from a single epidermal cell; “leptosporangiate ferns”

What is leptosporangiate sporangium?

Leptosporangiate Sporangium: Small, specialized sporangia developing from a single initial cell producing a small, definite number(<128) of spores. These often occur in a cluster (sorus) that is often covered by a flap of tissue known as an indusium.

What is meant by eusporangiate?

Definition of eusporangiate : having sporangia which rise from a group of epidermal cells eusporangiate ferns of the families Ophioglossaceae and Marattiaceae —opposed to leptosporangiate.

Is Lycopodium a eusporangiate?

Bower (1894) had studied the development of sporangium in Lycopodium. The sporangium develops from a small group of superficial cells arranged in a transverse row on the adaxial side of the sporophyll near the base. Its development is of eusporangiate type.

What is eusporangiate type of Sporangial development?

The eusporangiate development is true development from a certain community of cells. The cells which are adjacent to these cells also contribute to the formation of the wall or stack of the sporangium. Complete answer: The eusporangiate sporangia develop from a group of sporangial initial cells.

What is leptosporangiate and eusporangiate type of development?

In eusporangiate type of development, large sporangia develop from a group of initials. In leptosporangiate type of development, small sporangia develop from a single initial, the former builds the entire sporangium, its contents and stalk and the latter takes no part in the process.

Is Equisetum a leptosporangiate?

The leptosporangiate ferns are one of the four major groups of ferns, with the other three being the eusporangiate ferns comprising the marattioid ferns (Marattiidae, Marattiaceae), the horsetails (Equisetiidae, Equisetaceae), and whisk ferns and moonworts.

Is Equisetum a eusporangiate or leptosporangiate?

Eusporangiate ferns evolved before leptosporangiate ferns. Eusporangiate ferns include some typical-looking ferns such as Ptisana (Marattia) alongside some rather odd-looking plants such as Tmesipteris (fork ferns), Psilotum (whisk ferns), Equisetum (horsetails), Botrychium, and Ophioglossum (adder’s tongue ferns).

What is leptosporangiate development?

In leptosporangiate type of development, small sporangia develop from a single initial, the former builds the entire sporangium, its contents and stalk and the latter takes no part in the process.

Which of the following is an example of a eusporangiate fern?

Eusporangiate ferns include some typical-looking ferns such as Ptisana (Marattia) alongside some rather odd-looking plants such as Tmesipteris (fork ferns), Psilotum (whisk ferns), Equisetum (horsetails), Botrychium, and Ophioglossum (adder’s tongue ferns).

Is Azolla a leptosporangiate?

Leptosporangiate Ferns–SALVINIALES. Salviniaceae. A-E. Azolla, mosquito fern.

Which of the following is an example of a eusporangiate Fern?