science
Grade-10
Easy
Question
Continuous self-pollination in a species may develop?
Weak off springs
Strong off springs
New variety
Seedless fruit
Removing anthers of one plant
Weak off springs
Strong off springs
New variety
Seedless fruit
Removing anthers of one plant
Hint:
Both male and female gametes share same genetic information.
The correct answer is: Weak off springs
- In self pollinating plants, the pollen from anther fall into the stigma of the same flower
- True or pure breeding is possible in self-pollination
- Elimination of weaker qualities is not possible
- New variety cannot be formed in self-pollinating plants since gametes share the same genetic information
- Pollination helps in the reproduction in plants by transfer of pollen grains from anther to stigma
- Pollination can be classified into
- Self pollination: Pollen grains from anther falls into the stigma of the same flower
- Cross pollination: Pollen grains from anther falls into the stigma of a different flower
Related Questions to study
science
Which method is used to produce a true-breeding line?
- True or pure breeding is possible in self-pollination
- Elimination of weaker qualities is not possible
- New variety of offspring cannot be formed in self-pollinating plants
Which method is used to produce a true-breeding line?
scienceGrade-10
- True or pure breeding is possible in self-pollination
- Elimination of weaker qualities is not possible
- New variety of offspring cannot be formed in self-pollinating plants
science
The process of the transfer of characters from parents to offspring is referred to as ______
- The genes are present in chromosomes
- Each organism has a specific number of chromosome
- Humans have 23 pairs while peas have 7 pairs
The process of the transfer of characters from parents to offspring is referred to as ______
scienceGrade-10
- The genes are present in chromosomes
- Each organism has a specific number of chromosome
- Humans have 23 pairs while peas have 7 pairs
science
Which is not a pair of contrasting traits studied by Mendel?
- Gene is the hereditary unit
- Gene can have different versions called alleles
- The alleles can be dominant or recessive
- The presence of a dominant allele will mask the presence of a recessive allele
Which is not a pair of contrasting traits studied by Mendel?
scienceGrade-10
- Gene is the hereditary unit
- Gene can have different versions called alleles
- The alleles can be dominant or recessive
- The presence of a dominant allele will mask the presence of a recessive allele
science
Mendel’s idea that the pair of alleles of each parent separate and only one allele from each parent is passed to an offspring is explained by:
- Law of segregation is the second law of inheritance
- Law of inheritance is based on the following:
- Gene can exist in various versions called alleles
- During meiosis, separation of allelic pair occurs providing single allele to each gamete
- Organisms inherit two alleles for each phenotype
- In an allele pair, one is dominant while other is recessive
Mendel’s idea that the pair of alleles of each parent separate and only one allele from each parent is passed to an offspring is explained by:
scienceGrade-10
- Law of segregation is the second law of inheritance
- Law of inheritance is based on the following:
- Gene can exist in various versions called alleles
- During meiosis, separation of allelic pair occurs providing single allele to each gamete
- Organisms inherit two alleles for each phenotype
- In an allele pair, one is dominant while other is recessive
science
Which plant was used by Mendel to give the laws of inheritance?
- The garden peas have a short germination period of 7 to 14 days
- The basics of heredity was explained by Gregor Mendel
- The traits exhibited by both dominant and recessive plants are as follows:
Character Dominant Recessive Seed shape Smooth Wrinkled Seed color Yellow Green Flower color Purple White Pod shape Inflated Constricted Pod color Green Yellow Flower position Axial Terminal Stem length Tall Dwarf
Which plant was used by Mendel to give the laws of inheritance?
scienceGrade-10
- The garden peas have a short germination period of 7 to 14 days
- The basics of heredity was explained by Gregor Mendel
- The traits exhibited by both dominant and recessive plants are as follows:
Character Dominant Recessive Seed shape Smooth Wrinkled Seed color Yellow Green Flower color Purple White Pod shape Inflated Constricted Pod color Green Yellow Flower position Axial Terminal Stem length Tall Dwarf
science
In the given options which is a dominant trait?
- Law of inheritance includes:
- Law of dominance
- Law of segregation
- Law of independent assortment
In the given options which is a dominant trait?
scienceGrade-10
- Law of inheritance includes:
- Law of dominance
- Law of segregation
- Law of independent assortment
science
What explains the differences between the progeny and parents?
What explains the differences between the progeny and parents?
scienceGrade-10
science
Who proposed the laws of inheritance?
- Gregor Mendel explained the transmission of traits from parents to offspring
- Mendel devised the monohybrid and dihybrid crosses
Who proposed the laws of inheritance?
scienceGrade-10
- Gregor Mendel explained the transmission of traits from parents to offspring
- Mendel devised the monohybrid and dihybrid crosses
science
Which is the CORRECT statement regarding gametophytes?
- Sporophytes are diploid (2n)
- Spores produced by meiosis are haploid (n)
- Gametophytes are haploid (n)
- Gametes formed will be haploid (n)
- Zygote formed will be diploid (2n)
Which is the CORRECT statement regarding gametophytes?
scienceGrade-10
- Sporophytes are diploid (2n)
- Spores produced by meiosis are haploid (n)
- Gametophytes are haploid (n)
- Gametes formed will be haploid (n)
- Zygote formed will be diploid (2n)
science
Alternation of generation is important because:
- Alteration of generation is rotation between sporophyte and gametophytic generation
- Alteration of generation allows reproduction in plants depending upon the environmental conditions
Alternation of generation is important because:
scienceGrade-10
- Alteration of generation is rotation between sporophyte and gametophytic generation
- Alteration of generation allows reproduction in plants depending upon the environmental conditions
science
Sporophyte produce spores by the process of ________________.
- Alteration of generation involves sporophyte and gametophytic phases
- Plants and algae will undergo change between haploid and diploid stages
- The dominance of sporophyte and gametophytic phases depend on the type of the plant or algae
Sporophyte produce spores by the process of ________________.
scienceGrade-10
- Alteration of generation involves sporophyte and gametophytic phases
- Plants and algae will undergo change between haploid and diploid stages
- The dominance of sporophyte and gametophytic phases depend on the type of the plant or algae
science
_________________ is seen when an embryo develops without fertilization by a male gamete.
- Fertilization requires fusion of female and male gametes
- Parthenocarpy is found in plants which are seedless
- Male gamete is not required in the formation of fruit
_________________ is seen when an embryo develops without fertilization by a male gamete.
scienceGrade-10
- Fertilization requires fusion of female and male gametes
- Parthenocarpy is found in plants which are seedless
- Male gamete is not required in the formation of fruit
science
Which of the following is wrong about the haplo-diplontic life cycle?
- Alteration of generation is the rotation of sporophyte and gametophyte phases
- Organism can follow either haplontic or diplontic or haplo-diplontic lifecycle
- Green algae follow haplontic lifecycle
- Pteridophytes and bryophytes follow haplo-diplontic lifecycle
- Angiosperms, gymnosperms follow diplontic lifecycle
Which of the following is wrong about the haplo-diplontic life cycle?
scienceGrade-10
- Alteration of generation is the rotation of sporophyte and gametophyte phases
- Organism can follow either haplontic or diplontic or haplo-diplontic lifecycle
- Green algae follow haplontic lifecycle
- Pteridophytes and bryophytes follow haplo-diplontic lifecycle
- Angiosperms, gymnosperms follow diplontic lifecycle
science
Haplo-diplontic life cycle is found in ____________.
- Alteration of generation is the rotation of sporophyte and gametophyte phases
- Organism can follow either haplontic or diplontic or haplo-diplontic lifecycle
- Green algae follow haplontic lifecycle
- Fungus and bryophytes follow haplo-diplontic lifecycle
- Angiosperms, gymnosperms follow diplontic lifecycle
Haplo-diplontic life cycle is found in ____________.
scienceGrade-10
- Alteration of generation is the rotation of sporophyte and gametophyte phases
- Organism can follow either haplontic or diplontic or haplo-diplontic lifecycle
- Green algae follow haplontic lifecycle
- Fungus and bryophytes follow haplo-diplontic lifecycle
- Angiosperms, gymnosperms follow diplontic lifecycle
science
In which type of life cycle sporophyte generation is represented only by one-celled zygote?
- Green algae follow haplontic life cycle
- Gametophytes are dominant
In which type of life cycle sporophyte generation is represented only by one-celled zygote?
scienceGrade-10
- Green algae follow haplontic life cycle
- Gametophytes are dominant