science
Grade-10
Easy
Question
Which life cycle is seen in Chlamydomonas?
Haplontic
Diplontic
Haplo-diplontic
None of the above
Haplontic
Diplontic
Haplo-diplontic
None of the above
Hint:
Set of chromosomes found in gametes.
The correct answer is: Haplontic
Alteration of generation is a common phenomenon found in plants and algae. The diploid and haploid stages appear alternating during their life cycle.
Alteration of generation depends upon the type of plant. In some, the diploid stage is dominant (like bryophytes) while haploid stage is dominant in others (like tracheophytes).
The gametophytic stage is dominant in Chlamydomonas and hence, haplontic in nature. This is because, the only diploid phase zygote undergoes meiosis and forms meiospores which are haploid.
- Alteration of generation depends upon plant or algae
- Chlamydomonas have dominant gametophytic stage
- Gametophytic stage are haplontic in nature
Related Questions to study
science
Which of the following is correct regarding spores?
- Somatic cells are diploid
- Gametes are haploid
Which of the following is correct regarding spores?
scienceGrade-10
- Somatic cells are diploid
- Gametes are haploid
science
What is the pattern followed in the alternation of generations in plants?
- 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
What is the pattern followed in the alternation of generations in plants?
scienceGrade-10
- 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
science
The method of reproduction where a parent organism breaks into fragments that are capable of developing into a new organism is called:
The method of reproduction where a parent organism breaks into fragments that are capable of developing into a new organism is called:
scienceGrade-10
science
____________ are produced by sporophyte.
____________ are produced by sporophyte.
scienceGrade-10
science
A diplontic life cycle is observed in:
A diplontic life cycle is observed in:
scienceGrade-10
science
A gametophyte produces _____.
A gametophyte produces _____.
scienceGrade-10
science
The sporophyte generation is:
The sporophyte generation is:
scienceGrade-10
science
Syngamy means:
Syngamy means:
scienceGrade-10
science
In what type of asexual reproduction formation of an outgrowth takes place in an organism:
In what type of asexual reproduction formation of an outgrowth takes place in an organism:
scienceGrade-10
science
_________ is the process in which a cell divides to produce two identical cells.
_________ is the process in which a cell divides to produce two identical cells.
scienceGrade-10
science
Alternation of generation occur in ______________.
Alternation of generation occur in ______________.
scienceGrade-10
science
Sexual reproduction involves ________.
Sexual reproduction involves ________.
scienceGrade-10
science
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
- Traits under discontinuous variation have limited range
- Traits under continuous variation have unlimited range
- Discontinuous variation is due to the influence of genes alone
- Continuous variation is due to the combined effects of genes and environment
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
scienceGrade-10
- Traits under discontinuous variation have limited range
- Traits under continuous variation have unlimited range
- Discontinuous variation is due to the influence of genes alone
- Continuous variation is due to the combined effects of genes and environment
science
What is this definition: 'Differences between organisms caused by environmental factors.'
- Variation is the difference between individuals of same population
- Variation can be caused due to genes or due to environmental factors
What is this definition: 'Differences between organisms caused by environmental factors.'
scienceGrade-10
- Variation is the difference between individuals of same population
- Variation can be caused due to genes or due to environmental factors
science
What is this definition: 'A group of organisms that can reproduce with each other to produce offspring that will also be able to reproduce'?
- Carl Linnaeus is the father of modern taxonomy
- Binomial nomenclature is used to describe the name of the species
- Binomial nomenclature has 2 parts: genus and species (in italics)
- Species is the last and principal part of the taxonomical hierarchy
- Species are group of organisms with similar traits capable of interbreeding and producing future generations
What is this definition: 'A group of organisms that can reproduce with each other to produce offspring that will also be able to reproduce'?
scienceGrade-10
- Carl Linnaeus is the father of modern taxonomy
- Binomial nomenclature is used to describe the name of the species
- Binomial nomenclature has 2 parts: genus and species (in italics)
- Species is the last and principal part of the taxonomical hierarchy
- Species are group of organisms with similar traits capable of interbreeding and producing future generations
