Q. In plants, what is the role of the flower in reproduction?
A.
Photosynthesis
B.
Water absorption
C.
Pollination and fertilization
D.
Nutrient storage
Show solution
Solution
The flower is the reproductive structure in flowering plants, facilitating pollination and fertilization to produce seeds.
Correct Answer:
C
— Pollination and fertilization
Learn More →
Q. What is a phenotype ratio of a dihybrid cross?
A.
1:1
B.
3:1
C.
9:3:3:1
D.
1:2:1
Show solution
Solution
A dihybrid cross typically results in a 9:3:3:1 phenotypic ratio, representing the combinations of two traits.
Correct Answer:
C
— 9:3:3:1
Learn More →
Q. What is the primary function of the process of meiosis in plants?
A.
To produce identical daughter cells
B.
To generate genetic variation
C.
To facilitate photosynthesis
D.
To increase plant size
Show solution
Solution
Meiosis is crucial for sexual reproduction as it reduces the chromosome number by half and introduces genetic variation through recombination.
Correct Answer:
B
— To generate genetic variation
Learn More →
Q. What is the significance of the Law of Segregation in plant genetics?
A.
It explains how traits are inherited independently
B.
It states that alleles segregate during gamete formation
C.
It describes the dominance of certain traits
D.
It outlines the process of photosynthesis
Show solution
Solution
The Law of Segregation states that during gamete formation, the two alleles for a trait segregate from each other, ensuring that offspring receive one allele from each parent.
Correct Answer:
B
— It states that alleles segregate during gamete formation
Learn More →
Q. What is the term for the observable characteristics of an organism resulting from the interaction of its genotype with the environment?
A.
Genotype
B.
Phenotype
C.
Heredity
D.
Mutation
Show solution
Solution
The phenotype is the set of observable characteristics of an organism, influenced by both genetic and environmental factors.
Correct Answer:
B
— Phenotype
Learn More →
Q. What term describes the genetic makeup of an organism?
A.
Phenotype
B.
Genotype
C.
Allele
D.
Chromosome
Show solution
Solution
The genotype refers to the specific genetic constitution of an organism, while the phenotype is the observable expression of that genotype.
Correct Answer:
B
— Genotype
Learn More →
Q. Which of the following best describes a recessive allele?
A.
It is always expressed in the phenotype
B.
It can only be expressed in a homozygous condition
C.
It is more common than dominant alleles
D.
It masks the effect of dominant alleles
Show solution
Solution
A recessive allele is only expressed in the phenotype when an individual has two copies of that allele (homozygous condition).
Correct Answer:
B
— It can only be expressed in a homozygous condition
Learn More →
Q. Which of the following is a characteristic of a dominant allele?
A.
It is always expressed in the phenotype
B.
It can be masked by a recessive allele
C.
It is only expressed in homozygous conditions
D.
It is less common in a population
Show solution
Solution
A dominant allele is expressed in the phenotype even when only one copy is present, masking the effect of a recessive allele.
Correct Answer:
A
— It is always expressed in the phenotype
Learn More →
Q. Which of the following processes increases genetic variation in plant populations?
A.
Asexual reproduction
B.
Cloning
C.
Cross-pollination
D.
Vegetative propagation
Show solution
Solution
Cross-pollination introduces genetic variation by combining genetic material from different parent plants.
Correct Answer:
C
— Cross-pollination
Learn More →
Showing 1 to 9 of 9 (1 Pages)
