EVERYDAY SCIENCE

Detailed explanation-1: -The protonema stage develops from the sporophytic stage. It is known as the initial stage. The secondary protonema emerges from this protonema. The second stage, a leafy stage, is produced by secondary protonema.

Detailed explanation-2: -There are two different developmental stages of the gametophyte: the protonema, and the gametophore.

Detailed explanation-3: -Solution: The predominant stage of the moss is the presence of gametophyte which consists of two stages – the first stage is protonema and the second stage is leafy stage. Protonema stage develops directly from the spores and leafy stage develops from the secondary protonema as a lateral bud.

Detailed explanation-4: -The life cycle of bryophytes consists of an alternation of two stages, or generations, called the sporophyte and the gametophyte.

Detailed explanation-5: -The second stage is the leafy stage, which develops from the secondary protonema as a lateral bud. They consist of upright, slender axes bearing spirally arranged leaves. They are attached to the soil through multicellular and branched rhizoids. Q.