Heredity
Each subtopic includes About section, revision page link, 10 preview questions, and practice CTAs.
Preview questions (no answers)
- 1.
If we cross a pure tall plant () with another pure tall plant (), the offspring will be:
A.All tall
B.All short
C.50% tall, 50% short
D.75% tall, 25% short
- 2.
What is the sex of a child inheriting an X chromosome from the father?
A.Male
B.Female
C.Could be either
D.None of these
- 3.
Which of the following is a reason why Mendel chose pea plants?
A.They have a long life cycle
B.They produce very few seeds
C.They have clear contrasting characters
D.They are very difficult to grow
Download the worksheet for Heredity - Heredity to practice offline. It includes additional chapter-level practice questions.
Mendel’s contribution
SubtopicMendel’s contribution under Heredity for Grade 10 CBSE.
Preview questions (no answers)
- 1.
A segment of DNA that provides information for a specific protein, which in turn controls a trait, is called a:
A.Chromosome
B.Gene
C.Nucleus
D.Ribosome
- 2.
Which of the following was a unique feature of Mendel's work compared to previous biologists?
A.He used only microscopic observation
B.He applied mathematical logic and statistical records
C.He studied human genetics only
D.He did not use any plants
- 3.
If you cross two heterozygous tall plants (), what is the probability of obtaining a homozygous tall () plant?
A.1 in 4
B.2 in 4
C.3 in 4
D.4 in 4
Download the worksheet for Heredity - Mendel’s contribution to practice offline. It includes additional chapter-level practice questions.
Laws for inheritance of traits
SubtopicLaws for inheritance of traits under Heredity for Grade 10 CBSE.
Preview questions (no answers)
- 1.
When a cross is made between a tall plant with round seeds () and a short plant with wrinkled seeds (), the F1 progeny are all tall and round. This is because:
A.Tallness and Round seeds are recessive
B.Tallness and Round seeds are dominant
C.Shortness and Wrinkled seeds are dominant
D.All traits are blended
- 2.
An organism having two different alleles for a particular character is called ____.
A.Homozygous
B.Heterozygous
C.Pure-breeding
D.Dominant
- 3.
The branch of biology that deals with the study of heredity and variation is ____.
A.Ecology
B.Genetics
C.Evolution
D.Botany
Download the worksheet for Heredity - Laws for inheritance of traits to practice offline. It includes additional chapter-level practice questions.
Preview questions (no answers)
- 1.
Which of the following statements is true about sex determination in humans?
A.All children inherit a Y chromosome from their mother.
B.All children inherit an X chromosome from their mother.
C.Only boys inherit an X chromosome from their mother.
D.Only girls inherit an X chromosome from their mother.
- 2.
How many total autosomes are there in a human skin cell?
A.22
B.23
C.44
D.46
- 3.
The scientific name for the female gamete in humans is:
A.Sperm
B.Ovum
C.Zygote
D.Pollen
Download the worksheet for Heredity - Sex determination to practice offline. It includes additional chapter-level practice questions.