Heredity Definition and Mendels Work_Unsolved Paper
Chapter: Heredity and Evolution | Topic: Heredity Definition and Mendels Work
HEREDITY DEFINITION AND MENDELS WORK_UNSOLVED PAPER
Topic: Heredity Definition and Mendels Work
Q1.The transmission of characteristics from parents to their offspring is called:
- Variation
- Heredity
- Evolution
- Adaptation
Q2. Gregor Johann Mendel conducted his famous experiments using:
- Mango plants
- Pea plants
- Rose plants
- Wheat plants
Q3. Mendel selected pea plants mainly because they:
- Have only one visible trait
- Show several clear contrasting traits
- Cannot reproduce naturally
- Have no variations
Q4. In Mendel's experiments, the trait that appeared in the first generation of a cross was referred to as:
- Recessive
- Dominant
- Acquired
- Mutated
Q5. Which of the following represents a pair of contrasting traits studied by Mendel?
- Tall and dwarf plants
- Green leaves and green stems
- Large roots and large flowers
- Red flowers and red fruits
Q6. Mendel's work was important because it helped scientists understand:
- How food is digested
- How inherited characteristics are transmitted
- How plants perform photosynthesis
- How organisms obtain oxygen
Short questions
Q1. Define heredity. Give one example of a characteristic that can be inherited from parents.
Q2. Who was Gregor Mendel? Why is he associated with the study of heredity?
Q3. Why did Mendel choose pea plants for his experiments? Mention any two suitable features of these plants.
Q4. What is meant by a pair of contrasting traits? Give one example from Mendel's experiments.
Q5. A child has a similar natural hair texture to one of their parents but has a different overall appearance.
How does this observation help us understand the basic idea of heredity?
Q6. In a school garden, students observe both tall and short pea plants.
Why would such differences be useful when studying heredity scientifically?
Q1. Explain the basic idea of heredity. Describe how characteristics can be transmitted from parents to offspring and why offspring may resemble their parents without being exactly identical.
Q2. Describe Mendel's experiment with pea plants involving a cross between plants showing contrasting characteristics. Explain the importance of observing the traits in successive generations.
Q3. Explain the terms dominant trait and recessive trait in the context of Mendel's experiments. Describe how Mendel's observations helped him understand the inheritance of characteristics
Q1. A pure-breeding tall pea plant is crossed with a pure-breeding dwarf pea plant.
a) Represent the contrasting parental traits using suitable symbols of your choice.
b) What type of offspring would you expect to examine in the first generation according to Mendel's observations?
Q2.A student observes the following results from a pea-plant experiment:
a) What fraction of the second-generation plants are dwarf?
b) What does the appearance of dwarf plants in the second generation suggest about the inheritance of the trait?
Q3. A student notices that two siblings have similar features to their parents, but the siblings are not exactly alike.