ACME ACADEMY

WEEKLY EVALUATION TEST

Subject: Science
Time Limit: 20 Mins
Max Marks: 20 Marks
Student Name:
Roll Number:
Class / Sec:
Date:

GENERAL INSTRUCTIONS:

  1. All questions are compulsory. Carefully read all instructions before starting.
  2. The question paper contains 20 questions.
  3. There is no negative marking for incorrect answers.
  4. Use of mobile phones, smartwatches, or calculators is strictly prohibited during the exam.
1. The transmission of characters or traits from parents to their offspring is called:
[1 Mark]
(A) Evolution
(B) Heredity
(C) Variation
(D) Speciation
2. Which plant did Gregor Mendel use for his foundational experiments on inheritance?
[1 Mark]
(A) Rose plant
(B) Mango plant
(C) Garden Pea plant
(D) Sunflower plant
3. In Mendelian genetics, a trait that expresses itself in the F1 generation is termed as:
[1 Mark]
(A) Recessive
(B) Dominant
(C) Mutated
(D) Co-dominant
4. What is the phenotypic ratio of a standard Mendelian monohybrid cross in the F2 generation?
[1 Mark]
(A) 1:2:1
(B) 9:3:3:1
(C) 3:1
(D) 1:1
5. The genetic constitution of an organism is called its:
[1 Mark]
(A) Phenotype
(B) Genotype
(C) Karyotype
(D) Prototype
6. A cross involving two pairs of contrasting characters is called a:
[1 Mark]
(A) Monohybrid cross
(B) Dihybrid cross
(C) Test cross
(D) Back cross
7. Which of the following determines the sex of a child in humans?
[1 Mark]
(A) The X chromosome from the mother
(B) The size of the egg
(C) The sex chromosome carried by the sperm
(D) Environmental temperature during pregnancy
8. How many pairs of chromosomes are found in normal human somatic (body) cells?
[1 Mark]
(A) 22
(B) 23
(C) 46
(D) 24
9. Which combination of sex chromosomes results in a human male?
[1 Mark]
(A) XX
(B) XY
(C) YY
(D) XO
10. The segment of DNA that provides information for one protein is called a:
[1 Mark]
(A) Chromosome
(B) Nucleus
(C) Gene
(D) Nucleolus
11. If a round, green-seeded pea plant (RRyy) is crossed with a wrinkled, yellow-seeded pea plant (rrYY), what will be the seeds in the F1 generation?
[1 Mark]
(A) Round and green
(B) Wrinkled and yellow
(C) Round and yellow
(D) Wrinkled and green
12. Differences in traits among individuals of the same species is referred to as:
[1 Mark]
(A) Evolution
(B) Speciation
(C) Variation
(D) Adaptation
13. Who is known as the 'Father of Genetics'?
[1 Mark]
(A) Charles Darwin
(B) Gregor Mendel
(C) James Watson
(D) Louis Pasteur
14. Which of the following is NOT a contrasting trait observed by Mendel in pea plants?
[1 Mark]
(A) Tall and dwarf stems
(B) Round and wrinkled seeds
(C) Yellow and green pods
(D) Red and white flowers
15. What is the genotypic ratio in the F2 generation of a monohybrid cross?
[1 Mark]
(A) 3:1
(B) 1:2:1
(C) 9:3:3:1
(D) 1:1
16. Cellular DNA is the information source for making proteins in the cell. If the information is changed, what is the immediate result?
[1 Mark]
(A) The cell dies instantly.
(B) A different protein will be made.
(C) The cell duplicates.
(D) It becomes a completely different species.
17. In humans, traits like attached or free earlobes are controlled by:
[1 Mark]
(A) The environment alone
(B) Nutrition during childhood
(C) Genes inherited from parents
(D) Surgical interventions
18. If a boy inherits an X chromosome from his mother, what must he inherit from his father?
[1 Mark]
(A) An X chromosome
(B) A Y chromosome
(C) Either an X or Y chromosome
(D) Neither, fathers do not pass sex chromosomes to sons
19. Two individuals have the exact same phenotype for a dominant trait. Does this mean they have the exact same genotype?
[1 Mark]
(A) Yes, always.
(B) No, one could be homozygous dominant and the other heterozygous.
(C) No, one could be homozygous recessive.
(D) Yes, if they are from the same family.
20. Mendel's Law of Segregation states that:
[1 Mark]
(A) Traits mix together during fertilization.
(B) Allele pairs separate randomly into gametes during reproduction.
(C) Dominant traits always destroy recessive ones.
(D) Different traits are inherited together.

Official Answer Key (For Teachers)

Q1
B
Q2
C
Q3
B
Q4
C
Q5
B
Q6
B
Q7
C
Q8
B
Q9
B
Q10
C
Q11
C
Q12
C
Q13
B
Q14
D
Q15
B
Q16
B
Q17
C
Q18
B
Q19
B
Q20
B
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