Question
Which of the following life cycle is exhibited by Fucus?
Haplontic
Diplontic
Triplontic
Haplo-diplontic
Haplontic
Diplontic
Triplontic
Haplo-diplontic
Hint:
The life cycle followed by angiosperms.
The correct answer is: Diplontic
Fucus is a brown algae, which follows diplontic lifecycle.
In diplontic life cycle:
- Diploid sporophyte is dominant
- Haploid sex cells undergo mitosis and form gametes
- The haploid gametes fuse together to form diploid zygote
- The zygote divides following mitosis and forms an independent plant
The gametophyte phase is observed as reduced stage in Fucus.
- Diplontic life cycle has sporophyte phase as dominant and independent
- Angiosperms, gymnosperms, Fucus all show diplontic lifestyle
Related Questions to study
Which of the following is INCORRECT about the diplontic life cycle?
- Sporophyte is dominant.
- Gametophyte depends on the sporophyte.
- Sporophyte depends on the gametophyte.
- All spermatophytes exhibit diplontic life cycle.
Which of the following is INCORRECT about the diplontic life cycle?
- Sporophyte is dominant.
- Gametophyte depends on the sporophyte.
- Sporophyte depends on the gametophyte.
- All spermatophytes exhibit diplontic life cycle.
The gametophyte in alternation generation is described by which of the following:
Diploid generation
Spore producing generation
Gamete producing generation
All of the above
The gametophyte in alternation generation is described by which of the following:
Diploid generation
Spore producing generation
Gamete producing generation
All of the above
A gametophyte is __________ in nature.
Haploid
Diploid
Triploid
None of the above
A gametophyte is __________ in nature.
Haploid
Diploid
Triploid
None of the above
In sexual reproduction ______ gametes fuse to form _________ zygote.
Diploid, haploid
Diploid, diploid
Haploid, diploid
Haploid, haploid
In sexual reproduction ______ gametes fuse to form _________ zygote.
Diploid, haploid
Diploid, diploid
Haploid, diploid
Haploid, haploid
In plants which of the following are produced by meiosis?
Haploid gametes
Haploid spores
Diploid sporophyte
Diploid spores
In plants which of the following are produced by meiosis?
Haploid gametes
Haploid spores
Diploid sporophyte
Diploid spores
A sporophyte produces _____.
Gametes
Spores
Zygote
None of the above
A sporophyte produces _____.
Gametes
Spores
Zygote
None of the above
Which life cycle is seen in Chlamydomonas?
Haplontic
Diplontic
Haplo-diplontic
None of the above
Which life cycle is seen in Chlamydomonas?
Haplontic
Diplontic
Haplo-diplontic
None of the above
Which of the following is correct regarding spores?
Spores have a single set of chromosomes.
Spores have two copies of chromosomes.
Spores have three copies of chromosome.
None of the above
Which of the following is correct regarding spores?
Spores have a single set of chromosomes.
Spores have two copies of chromosomes.
Spores have three copies of chromosome.
None of the above
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.
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.
The method of reproduction where a parent organism breaks into fragments that are capable of developing into a new organism is called:
Budding
Fragmentation
Vegetative reproduction
Binary fission
The method of reproduction where a parent organism breaks into fragments that are capable of developing into a new organism is called:
Budding
Fragmentation
Vegetative reproduction
Binary fission
____________ are produced by sporophyte.
Gametes
Gametes
Spores
Pollen
____________ are produced by sporophyte.
Gametes
Gametes
Spores
Pollen
A diplontic life cycle is observed in:
Chlamydomonas
Bryophytes
Algae
All of the above
A diplontic life cycle is observed in:
Chlamydomonas
Bryophytes
Algae
All of the above
A gametophyte produces _____.
Gametes
Spores
Zygote
None of the above
A gametophyte produces _____.
Gametes
Spores
Zygote
None of the above
The sporophyte generation is:
Diploid and multicellular
Haploid and unicellular
Haploid and multicellular
Diploid and unicellular
The sporophyte generation is:
Diploid and multicellular
Haploid and unicellular
Haploid and multicellular
Diploid and unicellular
Syngamy means:
Fusion of gametes
Fusion of two similar spores
Fusion of two dissimilar spores
Fusion of cytoplasm
Syngamy means:
Fusion of gametes
Fusion of two similar spores
Fusion of two dissimilar spores
Fusion of cytoplasm
