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
Related Questions to study
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
In what type of asexual reproduction formation of an outgrowth takes place in an organism:
Budding
Binary fission
Parthenogenesis
Vegetative propagation
In what type of asexual reproduction formation of an outgrowth takes place in an organism:
Budding
Binary fission
Parthenogenesis
Vegetative propagation
_________ is the process in which a cell divides to produce two identical cells.
Binary fission
Parthenogenesis
Multiple fission
Fragmentation
_________ is the process in which a cell divides to produce two identical cells.
Binary fission
Parthenogenesis
Multiple fission
Fragmentation
Alternation of generation occur in ______________.
Bryophytes
Bryophytes
Algae
All of the above
Alternation of generation occur in ______________.
Bryophytes
Bryophytes
Algae
All of the above
Sexual reproduction involves ________.
Involves the union of spores
Involves the union of body cells
Involves the union of sex cells
None of the above
Sexual reproduction involves ________.
Involves the union of spores
Involves the union of body cells
Involves the union of sex cells
None of the above
Which of the following is a genetically inherited human characteristic that is not affected by any changes in environmental conditions?
I. Skin color
II. Blood group
III. Presence of a dimple
IV. Height
- I and II
- I and III
- II and III
- III and IV
Which of the following is a genetically inherited human characteristic that is not affected by any changes in environmental conditions?
I. Skin color
II. Blood group
III. Presence of a dimple
IV. Height
- I and II
- I and III
- II and III
- III and IV
What is this definition: 'Differences between organisms caused by environmental factors.'
- Species
- Genetic variation
- Environmental variation
- Radiation
What is this definition: 'Differences between organisms caused by environmental factors.'
- Species
- Genetic variation
- Environmental variation
- Radiation
What is this definition: 'A group of organisms that can reproduce with each other to produce offspring that will also be able to reproduce'?
- Species
- Genetic variation
- Environmental variation
- Radiation
What is this definition: 'A group of organisms that can reproduce with each other to produce offspring that will also be able to reproduce'?
- Species
- Genetic variation
- Environmental variation
- Radiation
What is this definition: 'Differences between organisms caused by differences in the DNA they inherit from their parents'?
- Species
- Genetic variation
- Environmental variation
- Crossing over
What is this definition: 'Differences between organisms caused by differences in the DNA they inherit from their parents'?
- Species
- Genetic variation
- Environmental variation
- Crossing over
What can cause variation?
- Genetics
- Environment
- Both: genetics and environment
- Crossing over
What can cause variation?
- Genetics
- Environment
- Both: genetics and environment
- Crossing over
