Full fledge assessment (Please watch the above videos before attempting this assessment)

Question 1 of 20
Q1. Tuber of potato and runner of lawn grass are homologous organs because both of them represent 
  • Stems
  • Roots
  • Flowers
  • Tendrils

Solution :

Tuber of potato and runner of lawn grass are homologous organs because both of them represent stems. 
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Q2. Complex traits are likely to have evolved in small steps through 
  • Regeneration
  • Artificial selection
  • Genetic drift
  • Natural selection

Solution :

Complex traits are likely to have evolved in small steps through natural selection. 
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Q3. _____________is a connecting link between birds and reptiles. 
  • Archeopteryx
  • Calyptraphorus
  • Neptunea
  • Viviparus

Solution :

Archeopteryx is a connecting between birds and reptiles. 
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Q4. In a monohybrid cross, ________ progeny is dominant in the F2 generation.
  • 75%
  • 25%
  • 85%
  • 20%

Solution :

In a monohybrid cross, 75% progeny is dominant in the F2 generation. 
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Q5. _____________ is the change in inherited traits of a population of organisms from one generation to another. 
  • Inheritance
  • Classification
  • Evolution
  • Variation

Solution :

Evolution is change in the inherited traits of a population of organisms from one generation to another. 
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Q6. Evolution of horse took almost ____________ years. 
  • 60 million
  • 50 million
  • 40 billion
  • 60 billion

Solution :

Evolution of horse took almost 60 million years. 
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Q7. Which part of an organism is usually not preserved during fossilisation? 
  • Shell and bone
  • Muscles and skin
  • Teeth and nail
  • Cartilaginous exoskeleton

Solution :

Muscles and skin are usually not preserved during fossilisation. 
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Q8. Which of the following is not matched correctly with its characteristic?
  • Short distance between leaves : Cabbage
  • Arrested flower development : Broccoli
  • Sterile flowers : Cauliflower
  • Small leaves : Kale

Solution :

Kale was developed with slightly larger leaves. 
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Q9. Which of the following is not true about homologous structures? 
  • They have the same basic structural design.
  • They have the same basic developmental origin.
  • They are present only in animals.
  • They perform different functions.

Solution :

Homologous structures are present in plants and animals. In plants, the leaves of pitcher plant and cactus are homologous. 
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Q10. Radiometric age dating is a method used to determine the
  • Similarity between two species
  • Developmental stages of organisms
  • Origin of organisms
  • Age of fossils

Solution :

Radiometric age dating is a method used to determine the age of fossils. 
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Q11. Which of the following organisms have compound eyes? 
  • Parasites
  • Insects
  • Protozoa
  • Viruses

Solution :

Insects and crustaceans have compound eyes which can detect fast movement. 
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Q12. Which of the following does not serve as evidence for evolution? 
  • Homologous organs
  • Analogous organs
  • Physical traits
  • Fossils

Solution :

Physical traits do not serve as evidence for evolution. 
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Q13. Tea sap hardens to form a semi-precious material called ________ which forms fossils. 
  • Opal
  • Amber
  • Ochre
  • Flintstone

Solution :

Tea sap hardens to form a semi-precious material called amber which forms fossils. 
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Q14. Which of the following does not differentiate between monohybrid and dihybrid crosses? 
  • Type of contrasting characters
  • Genotypic and phenotypic ratio
  • Number of alleles
  • Number of contrasting characters

Solution :

There are only two types of contrasting characters involved in both monohybrid and dihybrid crosses - dominant and recessive. 
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Q15. __________ is the genetic constitution, while ____________ is the morphological appearance of an individual. 
  • Phenotype, genotype
  • Genotype, phenotype
  • Genotype, epistasis
  • Phenotype, epistasis

Solution :

Genotype is the genetic constitution, while phenotype is the morphological appearance of an individual. 
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Q16. Which of the following proves that fossil records provide evidence for evolution? I → Document the biodiversity of the past II → Contain records of extinct species III → Authenticate the types of species
  • I, II and III
  • II and III
  • I and III
  • I and II

Solution :

Fossil records document the biodiversity of the past. They contain the records of extinct species which have traits transitional between major groups of organisms.
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Q17. Genes which code for a pair of contrasting traits are called 
  • Alleles
  • Dominant
  • Recessive
  • Epistatic

Solution :

Genes which code for a pair of contrasting traits are called alleles. 
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Q18. Which of the following have a common ancestor? 
  • Humans, chimpanzees, apes
  • Humans, birds, reptiles
  • Chimpanzees, apes, birds
  • Apes, humans, reptiles

Solution :

Humans, chimpanzees, monkeys and apes are known to have a common ancestor. 
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Q19. All types of proteins are made of ________ types of amino acids. 
  • 20
  • 25
  • 30
  • 60

Solution :

All types of proteins are made of just 20 types of amino acids. 
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Q20. In which of the following habitats are bacteria known to survive successfully? 
  • Deep sea thermal vents
  • Hot springs
  • Ice in Antarctica
  • All of the above

Solution :

Bacteria are known to survive successfully in deep sea thermal vents, hot springs and ice in Antarctica. 
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