science
Grade-10
Easy
Question
Alternation of generation occur in ______________.
Bryophytes
Bryophytes
Algae
All of the above
Bryophytes
Bryophytes
Algae
All of the above
Hint:
Aquatic plants and nonvascular plants show alternation of generation.
The correct answer is: All of the above
Bryophytes are non-vascular plants. In their life cycle, they are the only embryonic plants (embryo-producing plants) whose life history includes a dominant (haploid) gametophyte stage. The alternation of generations is a life cycle consisting of two life phases that alternate regularly. In bryophytes, the first stage is the gametophyte stage,
Alternation of generations occurs in almost all multicellular red and green algae, both freshwater types (such as Cladophora) and algae (such as Ulva). For the most part, generations are homomorphic (isomorphic) and live freely.
Related Questions to study
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
science
What is this definition: 'Differences between organisms caused by differences in the DNA they inherit from their parents'?
- Even identical twins have difference in genetic makeup. This is due to genetic variation.
- Variation causes difference in traits such as height, eye color, skin color and many more
- Variation can be continuous or discontinuous
- Variation is due to genes or due to combined influence of genes and environment
What is this definition: 'Differences between organisms caused by differences in the DNA they inherit from their parents'?
scienceGrade-10
- Even identical twins have difference in genetic makeup. This is due to genetic variation.
- Variation causes difference in traits such as height, eye color, skin color and many more
- Variation can be continuous or discontinuous
- Variation is due to genes or due to combined influence of genes and environment
science
What can cause variation?
- No two individuals of same population is identical. This is due to variation.
- Variation causes difference in phenotypes such as height, weight, blood group and many more
- Variation can be continuous or discontinuous
- Variation is due to genes or due to combined influence of genes and environment
What can cause variation?
scienceGrade-10
- No two individuals of same population is identical. This is due to variation.
- Variation causes difference in phenotypes such as height, weight, blood group and many more
- Variation can be continuous or discontinuous
- Variation is due to genes or due to combined influence of genes and environment
science
What does variation mean?
- No two individuals of same population is identical. This is due to variation.
- Variation causes difference in traits such as height, eye color, skin color and many more
- Variation can be continuous or discontinuous
- Variation is due to genes or due to combined influence of genes and environment
What does variation mean?
scienceGrade-10
- No two individuals of same population is identical. This is due to variation.
- Variation causes difference in traits such as height, eye color, skin color and many more
- Variation can be continuous or discontinuous
- Variation is due to genes or due to combined influence of genes and environment
science
Which of the following would increase the number of different alleles in a population?
Which of the following would increase the number of different alleles in a population?
scienceGrade-10
science
Variation in a trait may be due to the change in genetic material. What do you call this type of change?
- DNA is the genetic material for all organisms
- DNA is made of sequence of nucleic acids
- Gene is the unit of heredity and codes for particular trait
- Change in sequence of nucleic acid is called mutation
- Not all mutations are harmful
Variation in a trait may be due to the change in genetic material. What do you call this type of change?
scienceGrade-10
- DNA is the genetic material for all organisms
- DNA is made of sequence of nucleic acids
- Gene is the unit of heredity and codes for particular trait
- Change in sequence of nucleic acid is called mutation
- Not all mutations are harmful
science
The following information is about two individuals, X and Y.
*Individual X: presence of a dimple
*Individual Y: no dimple
Which of the following factors causes the difference in the trait between the two individuals?
- 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
The following information is about two individuals, X and Y.
*Individual X: presence of a dimple
*Individual Y: no dimple
Which of the following factors causes the difference in the trait between the two individuals?
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
Which of the following statements is true?
- Variation is the difference in genetic makeup of two individuals of the same population
- Variation can be continuous or discontinuous
- Continuous variation is influenced by genetic and environmental factors
- Discontinuous variation is influenced by genetic factors
- Inheritance of genes from parents can be studied using pedigree chart
Which of the following statements is true?
scienceGrade-10
- Variation is the difference in genetic makeup of two individuals of the same population
- Variation can be continuous or discontinuous
- Continuous variation is influenced by genetic and environmental factors
- Discontinuous variation is influenced by genetic factors
- Inheritance of genes from parents can be studied using pedigree chart
science
You get __% of your DNA from each parent.
- Gametes are haploid
- Zygote is diploid
- 50% DNA is from each parent
You get __% of your DNA from each parent.
scienceGrade-10
- Gametes are haploid
- Zygote is diploid
- 50% DNA is from each parent
science
Emily has brown hair.
Which Statement most likely explains why Emily has brown hair?
- Gene is the unit of heredity
- Expression of gene is observed as traits like hair color, blood group, etc
Emily has brown hair.
Which Statement most likely explains why Emily has brown hair?
scienceGrade-10
- Gene is the unit of heredity
- Expression of gene is observed as traits like hair color, blood group, etc
science
Which of the following is an example of Inherited variation?
- 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 an example of Inherited variation?
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