Class 10 Exam > Class 10 Notes > Science Class 10 > Unit Test: Heredity
Unit Test: Heredity | Science Class 10 PDF Download
Time: 1 hour
M.M. 30
Attempt all questions.
- Question numbers 1 to 5 carry 1 mark each.
- Question numbers 6 to 8 carry 2 marks each.
- Question numbers 9 to 11 carry 3 marks each.
- Question number 12 & 13 carry 5 marks each
Q1: A zygote which has an X chromosome inherited from the father will develop into a: (1 Mark)
(a) boy
(b) girl
(c) X chromosome does not determine the sex of a child
(d) either boy or girl
Q2: What is heredity? (1 Mark)
Q3: The Full Form of DNA is __________________________. (1 Mark)
Q4: A trait in an organism is influenced by (1 Mark)
(a) paternal DNA only
(b) maternal DNA only
(c) both maternal and paternal DNA
(d) neither by paternal nor by maternal DNA
Q5: In peas, a pure tall plant (TT) is crossed with a short plant (tt). The ratio of pure tall plants to short plants in F2 is (1 Mark)
(a) 1:3
(b) 3:1
(c) 1:1
(d) 2:1
Q6: A Mendelian experiment consisted of breeding pea plants bearing violet flowers with pea plants bearing white flowers. What will be the result in F1 progeny? (2 Marks)
Q7: What is a gene? (2 Marks)
Q8: Why is the progeny always tall when a tall pea plant is crossed with a short pea plant? (2 Marks)
Q9: Explain how the sex of the child is determined at the time of conception in human beings. (3 Marks)
Q10: Write a difference between inherited traits and acquired traits giving one example of each. (3 Marks)
Q11: Why do mice whose tails were surgically removed just after birth for generations, continue to produce mice with tails? (3 Marks)
Q12: Explain Mendel’s experiment with peas on inheritance of characters considering only one visible contrasting character. (5 Marks)
Q13: A green stemmed rose plant denoted by GG and a brown stemmed rose plant denoted by gg are allowed to undergo a cross with each other. (5 Marks)
The document Unit Test: Heredity | Science Class 10 is a part of the Class 10 Course Science Class 10.
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FAQs on Unit Test: Heredity - Science Class 10
| 1. What are heredity hobbies? |  |
Ans. Heredity hobbies are activities or interests that are passed down from one generation to another within a family due to genetic or familial influence.
| 2. How do genetics play a role in inheriting hobbies? | |
Ans. Genetics can influence the predisposition towards certain interests or skills, making it more likely for individuals to share hobbies with their family members.
| 3. Can heredity hobbies be influenced by environmental factors? | |
Ans. While genetics play a significant role in inheriting hobbies, environmental factors such as exposure to certain activities or interests can also influence an individual's choice of hobbies.
| 4. Are heredity hobbies limited to specific types of activities? | |
Ans. Heredity hobbies can encompass a wide range of activities, from sports and music to crafting and cooking, depending on the interests and skills passed down through generations.
| 5. Can heredity hobbies change over time or be influenced by personal preferences? | |
Ans. While heredity hobbies may have a genetic component, individuals can also develop new interests or hobbies based on personal preferences, experiences, and exposure to different activities throughout their lives.
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