Biodiversity

Question 1

Endemic

Answer 1

Endemic means a species are found only in one area

Question 2

Genetic diversity

Answer 2

Genetic diversity is the variety of alleles in gene pool.

Question 3

Biodiversity

Answer 3

Biodiversity is the variety of all species on Earth

Question 4

Why is biodiversity important

Answer 4

Biodiversity is important because it adds complexity to food webs
Microorganisms decompose material to release nutrients
We rely on organisms for buildings, food and medicines
Diverse ecosystems can survive disasters better.

Question 5

What is process of speciation

Answer 5

Process of speciation is:
Mutation causes natural variation among offspring.
Geographical isolation occurs, e.g a river separating so species are reproductively isolated so gene flow between 2 populations is blocked
Due to different environments and natural variation, those better adapted to their environment e.g better camouflaged survived and reproduced, passing on their alleles to their offspring. After a long period of time, the species splits into 2 because they cannot interbreed to produce fertile offspring as they are so different.

Question 6

What are selection pressures

Answer 6

Selection pressures are variables that reduce reproductive success in a population e.g disease, predators, weather

Question 7

What is speciation

Answer 7

Speciation is formation of distinct species in course of evolution.