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A rose plant with white flowers was planted in soil by stem cutting without any grafting. The new plant produced similar white flowers. What does it indicate?
White flowers look good so gardeners plant such roses.
White flowers are the only type of variety available in rose.
Stem cutting is a type of sexual reproduction, so there was no variation.
Stem cutting is a type of asexual reproduction, so there was no variation.
Stem cutting is a type of asexual reproduction, so there was no variation.
Stem cutting is a vegetative propagation technique, which is a form of asexual reproduction in plants. Because asexual reproduction involves only a single parent without the fusion of gametes, the offspring produced are genetically identical to the parent plant (clones), leading to no genetic variation in traits like flower color.
Stem cutting is a vegetative propagation technique, which is a form of asexual reproduction in plants. Because asexual reproduction involves only a single parent without the fusion of gametes, the offspring produced are genetically identical to the parent plant (clones), leading to no genetic variation in traits like flower color.
Stem cutting is like taking a photo with a digital camera and printing a copy; the new print (offspring) looks exactly like the original photo (parent) because it is a direct duplicate, unlike sexual reproduction which acts like mixing two different paints to get a new shade.
A-CLONE: Asexual reproduction produces Clones with Lineage identical to Original, No variation, Exact copy.
In vegetative propagation through stem cutting, somatic cells of the parent plant undergo mitotic cell division (2nтЖТ2n). Since mitosis strictly preserves the existing genetic material and sequence of DNA without genetic recombination or segregation of alleles (which occurs during meiosis in sexual reproduction), the daughter plant retains the exact genotype and phenotype of the parent plant.
Stem cutting is an artificial method of vegetative (asexual) reproduction.
Asexual reproduction results in offspring that are genetically identical to the parent, known as clones.
Genetic variation occurs primarily during sexual reproduction due to meiotic recombination and random fertilization.
No gametes or seeds are involved in vegetative propagation.
Rapid multiplication of desirable plant varieties with uniform traits.
Bypasses the long seed dormancy phase, allowing faster maturation and flowering.
Allows preservation of exact parental phenotypes across generations.
Lack of genetic variation makes the entire crop population susceptible to the same diseases or climate stresses.
Does not contribute to evolution or adaptation to changing environments.
Commercial propagation of ornamental plants like roses, sugarcane, bougainvillea, and hibiscus.
Horticultural reproduction of fruit trees like grapes and bananas to maintain fruit quality.
| Feature | Asexual Reproduction (Stem Cutting) | Sexual Reproduction |
|---|---|---|
Number of Parents | One single parent | Two parents (male and female) |
Cell Division Involved | Mitosis only | Meiosis and Mitosis |
Genetic Variation | Absent (Produces Clones) | Present (Recombination occurs) |
Option A is incorrect because human aesthetic preference does not explain the biological biological mechanism of inheritance.
Option B is incorrect because roses naturally come in multiple color variations such as red, yellow, pink, and orange.
Option C is incorrect because stem cutting uses vegetative body parts (somatic tissues) and is fundamentally an asexual process, not a sexual one.
D is correct тАФ Stem cutting is a method of vegetative (asexual) reproduction that does not involve genetic recombination, leading to offspring with no phenotypic variation.
Remember for competitive exams: Sexual reproduction involves Meiosis тЖТ Recombination тЖТ Variation, whereas Asexual/Vegetative reproduction involves Mitosis тЖТ DNACopying тЖТ Identical Clones.
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