WorksheetsEvolution Learn.Genetics (Wrksht Prt 2)
Total questions: 36
Worksheet time: 23mins
Name
Class
Date
1.
Oldest rocks, oldest fossils of bacteria, oldest fossils of eukaryotic cells: describes which time period?
a)
Precambrian
b)
Cambrain
c)
Jurrasic
d)
Cretaceous
2.
How much longer in time is the Precambrian period versus the Cambrian period?
a)
Precambrain is 50% longer
b)
Precambrian is twice as long
c)
Precambrian is about seven times as long
d)
Precambrian is about 100x longer
3.
First amphibians and insects, diversification of bony fishes
a)
Precambrian
b)
Cambrian
c)
Devonian
d)
Triassic
4.
Homo erectus appears, first human civilizations appear
a)
Quaternary
b)
Jurassic
c)
Cretaceous
d)
Paleogene
5.
___ reveal many similarities among species. The theory of evolution explains that these similarities are the result of common ancestry.
a)
Fossils
b)
Anatomy and one other choice
c)
Embryos and two other choices
d)
DNA and the other three choices
6.
All life on Earth descended from a common ancestor that lived ___ of years ago.
a)
hundreds
b)
thousands
c)
millions
d)
billions
7.
Scientists draw ___ to show how all living things are related.
a)
Grass
b)
Buildings
c)
Trees
d)
Mazes
8.
Mammalian limbs have a similar ___ structure. This shared anatomy provides strong evidence that all mammals descended from a ___.
a)
skeletal, common ancestor
b)
muscular, physically challenging environment
9.
Today, whales no longer have visible hind legs. But tucked away inside their bodies are useless leg bones. These ___ legs are clues to their evolutionary past.
a)
vestigial
b)
homologous
c)
analogous
d)
heterozygous
10.
Early embryos look very ___ across a wide variety of species. Vertebrate limbs, for example, emerge in pairs along the body.
a)
much the same
b)
different
11.
Snake embryos begin to develop legs, but the budding hind limbs later retract. These transient limbs tell us snakes are related to four legged vertebrates.
a)
True
b)
False
12.
Human embryos still build a notochord, but before birth it is replaced by a backbone.
a)
True
b)
False
13.
Human embryos still build wings and feathers, but before birth they are replaced by arms.
a)
True
b)
False
14.
All species are remarkably similar at the ___ level.
a)
molecular
b)
population
c)
organ
d)
system
15.
The same three nucleotides that code for specific amino acids are shared throughout all living things. The codon for proline is the same for humans, plants and bacteria.
a)
True
b)
False
16.
About ____ genes are common to all species.
a)
5
b)
500
c)
5 million
d)
no genes are shared with all species
17.
Shared biochemistry and common genes provide strong evidence that all living things descended from the same ancestor.
a)
True
b)
False
18.
All species share the same number of genes and have the same size genome.
a)
True
b)
False
19.
A history of our ancestors, both ancient and recent, is preserved in our DNA. Organisms most similar at the DNA level are also the ___.
a)
most closely related
b)
most different
20.
Human's closest relative is the chimpanzee because ___% of our DNA is the same.
a)
50%
b)
75%
c)
98%
d)
100%
21.
Evolution always moves from simple to complex.
Evolution often favors the loss of complexity.
Evolution often favors the loss of complexity.
a)
MISCONCEPTION; REALITY
b)
REALITY; MISCONCEPTION
22.
The organisms that fill our visual worldplants, animals and an occasional mushroomaccount for less than ___% of the living species on this planet.
a)
90
b)
50
c)
10
d)
0.01
23.
The family trees of all living things can be traced back to a single common ancestor; therefore, all of life has been evolving for the same amount of time.
More complex organisms like humans are more "evolved" than simple organisms like bacteria.
More complex organisms like humans are more "evolved" than simple organisms like bacteria.
a)
MISCONCEPTION, REALITY
b)
REALITY, MISCONCEPTION
24.
Image resolution in snails is around ___ pixels while human eye resolution is around ___ pixels.
a)
44; 10 million
b)
23; 20,000
c)
20; 3 billion
25.
These elaborate eyes are not wired up to a brain, they transmit visual information directly to muscles.
a)
Jellyfish
b)
Human
c)
Dog
d)
Euglena
26.
Which animal has the most complex eye?
a)
Mantis shrimp
b)
Nautilus
c)
Chameleon
d)
Human
27.
___% of animal species have eyes. The first animal eyes did little but detect light—they helped to establish day/night cycles and coordinate behavior—but more-complex eyes soon evolved.
a)
96%
b)
10%
c)
54%
d)
100%
28.
Scientists believe a light-sensitive patch of cells could evolve into a complex structure such as the human eye in about ___ generations.
a)
360,000
b)
3 billion
c)
20,000
d)
46
29.
What are the three planets (or their moons) that could harbor life beyond Earth?
a)
Mars, Jupiter, Saturn
b)
Venus, Mercury, Mars
c)
Pluto, Neptune, Mars
d)
Jupiter, Saturn, Uranus
30.
The earliest life on Earth was probably fueled by processes that are similar to the ones used by extremophiles today:
a)
capturing light energy
b)
breaking apart chemicals like hydrogen sulfide and methane
31.
Which is NOT one of the three domains of life?
a)
Archaea
b)
Bacteria
c)
Eukaryotes
d)
Chloroplasts
32.
What is NOT a criteria to make a habitable planet?
a)
Not too close but not too far from its star which will allow water
b)
The planet's mass is made of mostly rock and not gas
c)
The atmosphere is thick enough to keep carbon dioxide which keeps the planet warm and protects the surface from UV light
d)
The star has to be a blue star so that it emits enough heat for the surrounding planets
33.
Astrobiologists estimate that the Milky Way has ___ habitable planets that would be similar to Earth.
a)
2
b)
10
c)
500
d)
10 million
34.
What leaves behind a kind of footprint on a planet's surface?
a)
Liquid water
b)
Carbon dioxide gas
c)
Intense starlight
d)
A nearby moon
35.
Even a planet that is lifeless today could have ___ evidence of ancient life forms.
a)
fossil
b)
DNA
36.
Which is NOT a transitional fossil?
a)
Tiktaalik
b)
Archaeopteryx
c)
Lancelet
100 %
