How is leafy stage different from protonema stage in mosses?

The leafy stage in some mosses develops from a lateral bud in the secondary protonema. It is a small leafy structure consisting of rhizoid, leaves and stem. It bears the sex organs antheridia and archegonia. Whereas, Protonema is the gametophytic phase of mosses directly develops from haploid spores.

What is protonema stage and leafy stage?

The protonema stage is the one which directly develops from the spores, it is green in color, branched and filamentous and creeping in nature. The leafy stage is developed from the secondary protonema as a lateral bud. They have spirally arranged leaves.

What is protonema stage in mosses?

The protonema, which grows directly from the germinating spore, is in most mosses an extensive, branched system of multicellular filaments that are rich in chlorophyll. This stage initiates the accumulation of hormones that influence the further growth of newly formed cells.

Which is intermediate stage between protonema and leafy?

The predominant stage of the life cycle of a moss is the gametophyte which consists of two stages. The first stage is the protonema stage, which develops directly from a spore. The second stage is the leafy stage, which develops from the secondary protonema as a lateral bud.

What is the leafy stage in mosses?

Leafy stage develops from secondary protonema as a lateral bud. Protonema is creeping green branched frequently filamentous stage whereas leafy stage is upright with spirally arranged leaves.

How is leafy stage in mosses?

What are the two stages of mosses?

Similar to plants, the moss lifecycle is completed in two distinct stages – the gametophyte and the sporophyte. The term that describes this type of life history is called alternation of heteromorphic generations.

What is the first stage of mosses?

protonema
A protonema is a thread-like cell chain that forms the earliest stage of the life cycle of mosses (the haploid stage).

What is true about leafy stage of moss gametophyte?

In mosses, the dominant stage is the haploid generation (the gametophyte). This means that the green, leafy gametophytic tissue is haploid (has only one set of chromosomes). The gametophyte refers to all organs and tissues that are a part of the haploid generation.

Why is Funaria called leafy gametophyte?

The leafy gametophyte is the prevailing period of Funaria as the vegetative assortment of itself is spoken to by these leafy gametophores. It has two unmistakable development arranges, a prostrate filamentous alga-like protonema, and an upstanding gametophore. Hence, correct option is B.

Which of the following is the major difference between mosses and ferns?

Mosses are facultative aerobes while ferns are obligate aerobes.

Which phase in the life cycle of a moss consists of a leafy plant?

In mosses, as in liverworts and hornworts, the leafy shoots belong to the gametophytic phase and produce sex organs when they mature. The leafy shoots (often called gametophores, because they bear the sex organs) arise from a preliminary phase called the protonema, the direct product of spore germination.