Class 10 Science Chapter 8: Heredity and Evolution — 1 Marker Important Questions
Practice Heredity and Evolution 1 Marker important questions and mock-test sets for CBSE revision.
Topic-wise important and practice questions
Review question distribution across chapter topics for 1 Mark questions.
| Topic | 1 Mark |
|---|---|
| Earlobe Variation Activity | 5 |
| Dihybrid Cross and Independent Inheritance | 4 |
| Mendel's Pea Plant Experiments | 2 |
| Monohybrid Cross: F1 Generation | 2 |
| Sexual Reproduction and Greater Variation | 3 |
| Accumulation of Variation During Reproduction | 3 |
| Heredity and Inherited Traits | 2 |
| New Trait Combinations in F2 | 3 |
| Dominant and Recessive Traits | 1 |
| Probability of XX and XY Offspring | 1 |
| Restoration of Chromosome Number at Fertilisation | 1 |
| Single Gene Set in Germ Cells | 3 |
| Gene Expression and Plant Height | 1 |
| Human Sex Chromosomes | 3 |
| Interpreting Dominance from Family Data | 2 |
| Maternal and Paternal Contribution to Sex Determination | 0 |
| Monohybrid Cross: F2 Ratios | 1 |
| Population Frequency and Relative Age of Asexual Traits | 2 |
| Sex Determination Strategies in Different Species | 1 |
| Variation in Asexual Reproduction | 1 |
| Chromosomes as Separate Gene-Carrying Units | 0 |
| Genes as Information for Proteins | 3 |
| Designing Inheritance Investigations | 1 |
| Variation and Survival | 1 |
| Equal Genetic Contribution of Parents | 2 |
| Genotype and Phenotype Relationships | 2 |
1 Marker Preparation & Exam Strategy
1 Mark very short answer questions for Class 10 Science Heredity and Evolution focus on direct definitions, standard units, core formulas, and precise single-line explanations.
- Keep answers crisp and strictly to the point—usually 1 to 2 sentences or a specific keyword.
- Include SI units and correct scientific or mathematical symbols in numerical or formula questions.
- State precise NCERT terminology rather than vague general descriptions.
Sample Questions
Q1. Define the primary term introduced in Heredity and Evolution.
Model Answer: The primary concept in Heredity and Evolution represents the foundational relationship or definition established in the NCERT textbook.
Q2. State the SI unit or standard measure associated with key quantities in Heredity and Evolution.
Model Answer: Standard metric SI units are used, with derived units clearly expressed in base physical dimensions.
Q3. Give one everyday application or natural occurrence of the phenomena in Heredity and Evolution.
Model Answer: Phenomena in Heredity and Evolution are commonly observed in daily environmental, physical, or biological interactions aligned with the curriculum.