Advertisements
Advertisements
प्रश्न
What is protonema?
Advertisements
उत्तर
Protonema and bulbils help in asexual reproduction. Sexual reproduction is oogamous. Alternation of generation is present. It is the first stage in the life cycle of a moss, developing directly from the spore. It consists of creeping, green, branched, and often filamentous structures.
APPEARS IN
संबंधित प्रश्न
When and where does reduction division take place in the life cycle of a liverwort, a moss, a fern, a gymnosperm and an angiosperm?
Both gymnosperms and angiosperms bear seeds, then why are they classified separately?
Differentiate halpontic and diplontic life cycle.
Read the following statements and select the correct option.
Statement I: Algae follows haplontic life cycle in which the dominant phase is sporophyte.
Statement II: In many algae zygote divides by meiosis to form haploid spores.
Seeds of gymnosperms have three generations, that is :
Find out the incorrect statement.
Life cycle of gymnosperm is ______.
Give an example of plants with
- Haplontic life cycle
- Diplontic life cycle
- Haplo- diplontic life cycle
Most algal genera show haplontic life style. Name an alga which is
- Haplo-diplontic
- Diplontic
Comment on the lifecycle and nature of a fern prothallus.
