9th Class Biology Chapter 10 Test10. Evolution

Q1. Multiple choice questions (Attempt all · 10 × 1 = 10)

1. Speciation is the evolutionary process by which:
   1. a new population is formed
   2. a new breed is formed
   3. a new specie is formed
   4. a new race is formed
2. Natural selection operates to produce changes in:
   1. individuals
   2. populations
   3. races
   4. genes
3. What is an example of homologous structures in vertebrates?
   1. Forelimbs of humans and dogs
   2. Hindlimbs of humans and dogs
   3. Wings of birds and bats
   4. Fins of fish and whales
4. Variations are:
   1. Always beneficial
   2. Can be beneficial
   3. Can be harmful
   4. Both B & C
5. The type of selection that involves human intervention is:
   1. Natural selection
   2. Artificial selection
   3. Muman's selection
   4. Special creation
6. The inactive structures of an organism that have lost function over time:
   1. Homologous structures
   2. Waste parts
   3. Vestigial organ
   4. Both A & C
7. Evolution is the alteration in the:
   1. Structures
   2. Traits
   3. Functions
   4. Behaviors
8. Theory of natural selection is not based on:
   1. Competition
   2. Overproduction
   3. Variation
   4. Availability of food
9. Farmers have bred Neli-Ravi buffalo to produce more milk than older breeds. Which process was used to produce these cattle?
   1. adaptation
   2. natural selection
   3. genetic engineering
   4. selective breeding
10. Researchers have explained the evolution of horses by studying:
    1. Anatomy
    2. Fossils
    3. Breeding patterns
    4. Body structure