Chapter 17

Question 1

Morphs:

Answer 1

• The different physical forms a trait may have. Long necks and short necks are examples of morphs.

Question 2

Polymorphic:

Answer 2

• A trait that exists in several different morphs is polymorphic.

Question 3

Species:

Answer 3

A group of organisms with simulator morphological features, which can interbreed to produce fertile offspring and are reproductively isolated from other species.

Question 4

Organisms:

Answer 4

Living things that are capable of reacting to stimuli, reproduction, growth, and homeostasis.

Question 5

Genetic Drift:

Answer 5

Change in allele frequency that occurs be chance, because only some of the organisms reproduce.
- founders effect; small population isolated and have different selection pressures, allele frequencies chance hence causing genetic drift and evolution of this population.

Question 6

Genetic variation:

Answer 6

Diversity of the alleles within the genes in the genome of a single species.

Question 7

Variation:

Answer 7

is all the differences which exist between members of the same species.
There are two kinds of variation: Continuous and discontinuous.

Question 8

Ecology:

Answer 8

• The branch of biology dealing with the relations and interactions between organisms and their environment, including other organisms.

Question 9

Biodiversity:

Answer 9

• Eco/specie/ genetic variation in species.

Question 10

Ecosystem:

Answer 10

• A relatively self contained, interacting community of organisms, and the environgens in which they live and with which they interact.

Question 11

Habitat

Answer 11

• A locality in which an organism lives.

Question 12

Niche:

Answer 12

• Role of organisms in ecosystem, how an organism’s fits into the system
• Describes that how organism interacts, how it obtain energy, how it interacts with other organisms etc.
  Kangaroos in Australia, Zebra in savannah.

Question 13

Population:

Answer 13

A community of animals, plants, or humans among whose members interbreeding occurs.

Question 14

Community:

Answer 14

All of the populations of all the different species within a specified area at particular time.

Question 15

Species Diversity

Answer 15

• The number of species in a community is known as species richness.
• S. D. Takes richness into account ur also includes evenness of abundance of each species.
• 2 points that need to be found: Distribution and abundance.

Question 16

Speciation:

Answer 16

• The evolutionary process by which new biological species arise.