- Homologous organs Analogous organs
- Phenotype Genotype
- Dominant characters Recessive characters
- Monohybrid cross Dihybrid cross
- Testis Ovary
- Mitosis Meiosis
- Asexual reproduction Sexual reproduction
- Multiple fission Regeneration
- Nervous control in animal Chemical control in anim...
- Cerebrum cerebellum
- Central nervous system Peripheral nervous system
- Growth dependent movements in plants Growth indepe...
- Atria Ventricles
- Arteries Veins
- External respiration Internal respiration
- Stomach Small intestine
- Open chain hydrocarbons Closed chain hydrocarbons
- Saturated hydrocarbons Unsaturated hydrocarbons
- Roasting Calcination
- Metals Non – metals
- Convex lens Concave lens
- Real image Virtual image
- Direct current Alternating current
- Voltmeter Ammeter
- Oxidation Reduction
- s – block elements p – block elements
- Transition elements Inner transition elements
- Normal Elements Transition Elements
- Inert gas elements Normal elements
- Mendeleev's periodic table Modern periodic table
- Periods Groups
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