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Question
Which of the following groups of plants possess a protonema stage in its gametophytic phase?
Which of the following groups of plants possess a protonema stage in its gametophytic phase?
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Solution
The correct option is B Bryophyta
The predominant stage in the life cycle of mosses (Bryophyta) is the haploid gametophyte. It consists of two stages.
The first stage develops directly from the spore and is referred to as the protonema stage. It is a creeping, green, branched and filamentous stage.
The second stage is the leafy stage, which develops from the secondary protonema as a lateral bud. It consists of upright, slender axes bearing spirally arranged leaves and stage bears the sex organs.
The predominant stage in the life cycle of mosses (Bryophyta) is the haploid gametophyte. It consists of two stages.
The first stage develops directly from the spore and is referred to as the protonema stage. It is a creeping, green, branched and filamentous stage.
The second stage is the leafy stage, which develops from the secondary protonema as a lateral bud. It consists of upright, slender axes bearing spirally arranged leaves and stage bears the sex organs.
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