science
Grade-10
Easy
Question
What is the pattern followed in the alternation of generations in plants?
- Rotating haploid and diploid generations.
- Every third generation is diploid, the rest are haploid.
- Every generation of plants starts with a haploid cell.
- Every generation of plants starts with diploid cells.
Hint:
Sporophyte generation is followed by gametophytic generation.
The correct answer is: Rotating haploid and diploid generations.
A plant undergoes both haploid and diploid generations during its life cycle.
The plant cells are diploid and are called sporophyte.
The gametes that are formed following meiosis is haploid and are called gametophyte.
The plant passes through both sporophyte and gametophyte generations during its life cycle. This is called alteration of generation.
The alteration of generation varies with plants.
Bryophytes have a dominant gametophyte generation while tracheophytes have dominant sporophyte generation.
- Alteration of generation is rotation of sexual and asexual phase of a plant
- Diploid plant cells are sporophytes
- Haploid gametes cells are gametophytes
- Alteration of generation varies with type of plants
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