C6: Macroevolution

Question 1

All of the changes, diversifications, and extinctions that happened over the
course of life’s history are the

Answer 1

patterns of macroevolution

Question 2

state the patterns of
macroevolution

Answer 2

*
STASIS
*
CHARACTER CHANGE
*
LINEAGE SPLITTING
(or SPECIATION)
*
EXTINCTION

Question 3

Many lineages on the tree of life exhibit don’t change much for a long time

Answer 3

stasis

Question 4

what organism is termed as the living fossil?

Answer 4

coelacanths

Question 5

*
Lineages can change quickly or slowly.

can happen in a
single direction, or it can reverse itself.
*
Changes can occur within a single
lineage or across several lineages

Answer 5

Character Change

Question 6

Character Change includes:
____ and _____

Answer 6

*
Adaptive Radiation
*
Co evolution

Question 7

Species evolved into several different forms that live in different ways; the evolution of many diversely adapted species from a common ancestor.

Answer 7

Adaptive radiation

Question 8

It generally means an event in which a lineage
rapidly diversifies, with the newly formed
lineages evolving different adaptations.

Answer 8

Adaptive radiation

Question 9

what are the Causes of adaptive radiation

Answer 9

1. Key Adaptation
2. Competition
3. Invasion of vacated/ new niches
   *

Question 10

usually means an adaptation that allows the organism to
evolve to exploit a new niche or resource.

Answer 10

Key Adaptation

Question 11

results into character displacement

Answer 11

Competition

Question 12

Lineages that invade islands may give rise to adaptive radiations because the invaders are free from competition with other species.

Answer 12

Invasion of vacated/ new niches
*

Question 13

Refers to a kind of interaction between species which is described as reciprocal interaction

Answer 13

co-evolution

Question 14

An evolutionary change in one species may
constitute a new selective force on another

Answer 14

co-evolution

Question 15

includes only those situations in
which direct genetic change in one species is
attributable to genetic change in the other

Answer 15

co-evolution

Question 16

Types of Coevolution

Answer 16

*Parasitism
*Mutualism
*Competition
*Predation
- Predator Prey
-Herbivore Plant

Question 17

Patterns of lineage splitting can be identified by constructing and examining a _____.

Answer 17

phylogeny

Question 18

Patterns of long, stable periods are
interrupted by brief periods of more
rapid change.

Answer 18

Punctuated Equilibrium

Question 19

A catastrophic event or major genetic
change occurs, rapid evolution and
speciation occurs

Answer 19

Punctuated Equilibrium

Question 20

An evolutionary process in which unrelated organisms evolve
structures, traits or morphological features that the same function, in
other words, unrelated organisms come to resemble one another.

Answer 20

Convergent Evolution

Question 21

refers to the trait acquired by unrelated species as a result
of same adaptive response to a similar environment. It arises from
convergent evolution in which different species evolved analogous
traits.

Answer 21

Homoplasty

Question 22

It can be a frequent or rare event
within a lineage, or it can occur
simultaneously across many
lineages (mass extinction).

Answer 22

extinction