AP BIOLOGY

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: -Answer: d) Gametophyte in bryopsida has two stages viz. protonema and leafy stage.

Detailed explanation-4: -The gametophyte is the dominant life phase in the Bryophytes. The gametophyte produces structures known as antheridia and archegonia, which produce the male and female gametes respectively. Collectively these structures are known as gametangia.

Detailed explanation-5: -The life cycle of bryophytes consists of an alternation of two stages, or generations, called the sporophyte and the gametophyte.