Question

Lamarck's mechanism of change can be called

A. gradualism
B. natural selection
C. selective breeding
D. inheritance of acquired characteristics
What observation did Darwin make that suggested there had been geological changes in Earth's history?
A. giant tortoises
B. fossils of giant sloths
C. fossil shells on top of mountains
D. an absence of rabbits in South America

Answer 1

D. inheritance of acquired characteristics

Not:
A. gradualism
B. natural selection
C. selective breeding

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A. giant tortoises

NOT:
B. fossils of giant sloths
C. fossil shells on top of mountains
D. an absence of rabbits in South America

Answer 2

Answer 1 : D) Inheritance of acquired characteristics

Jean-Baptiste Lamarck propose a mechanism by which gradual change of species may occur.

According to him the traits an organism gained during its lifetime could be passed to its offspring.

Example: If a giraffe stretched its neck gradually by stretching to reach leaves for many years, Lamarck believed the offspring may have longer necks.

Answer 2: A) Giant Tortoises

Charles Darwin visited Galapagos Islands in 1835. During his visit he observed that different species were in a constant battle for survival with each other, and because of that battle there was a variation in the tortoise that live on the sand and those that live in the water.