Download Questions on Classification

Questions on Classification
Pg. 206
1. The kingdom that cartilaginous fish belong to is Animalia.
2a. The four fish that I think are in the same family are the one in the middle left,
the one in the bottom-left corner, the one in the middle, and the one in the
bottom-right corner because they all have the same general shape.
Bi. I think that the four fish are in different species because there are differences
in the markings on their bodies and slight differences in their tails.
ii. I think the four fish are in the same family because if they are the same genus,
then they have to be in the same family.
c. Two characteristics that the four genus-related fish share with each other and
not the other four fish are that their body shapes are almost kite-shaped, and that
their tails are all similar length in relation to their respective body sizes.
2. The remaining four fish have separate orders because one of the fish has a
totally different shape than the other three. While the three fish are straight, the
other fish has a shape similar to the four genus-related fish, which could very well
mean that it is in the same order as those fish, but a different family or genus.
Pg. 209
1. The organisms are divided into the following phyla: the Adocia cinerea is in the
porifera phylum, the Alcyonium glomeratum is in the porifera phylum, the
Nymphon gracilis is in the arthropoda phylum, the Pycnogonum littorale is in the
mollusca phylum, the Corynactis viridis is in the porifera phylum, the Lepidonotus
clara is in the arthropoda phylum, the Polymastia mammiliaris is in the porifera
phylum, the Cyanea capillata is in the cnidaria phylum, the Procerodes littoralis is
in the cnidaria phylum, the Loligo forbesii is in the mollusca phylum, the Arenicola
marina is in the cnidaria phylum, the Prostheceraeus vittatus is in the cnidaria
phylum, the Caprella linearis is in the cnidaria phylum, and the Gammarus locusta
is in the arthropoda phylum.
2a. The organisms that are bilaterally symmetric are the Nymphon gracilis, the
Pycnogonum littorale, the Lepidonotus clara, the Loligo forbesii, and the
Gammarus locusta.
b. The organisms that are radially symmetric are the Cyanea capillata, the
Procerodes littoralis, the Arenicola marina, the Prostheceraeus vittatus, and the
Caprella linearis.
c. The organisms that are not symmetrical in their structure is the Adocia cinerea,
the Alcyonium glomeratum, the Corynactis viridis, and the Polymastia
mammiliaris.
3a. The organisms that have jointed appendages are the Nymphon gracilis, the
Lepidonotus clara, and the Gammarus locusta.
b. The organisms that have stinging tentacles are the Cyanea capillata and the
Loligo forbesii.
c. None of the fourteen organisms have bristles.
4. The organisms that filter feed by pumping water through tubes inside their
bodies are the Adocia cinerea, the Alcyonium glomeratum, the Corynactis viridis,
and the Polymastia mammiliaris.
Pg. 210
1. I think that Linnaeus was racist, because he said that Asiatic was sooty and
governed by opinions and that Africans were phlegmatic and governed by caprice.
2. I think that the UNESCO symposium was correct, because differences between
humans around the world are insignificant: we are all still human.
3. The extent to which efforts be made to preserve differences are to allow
tourism and migration to continue.
Pg. 211
1.
2a. A species that is in a genus by itself is species 34.
b. The species that are in a family with two genera are 31-33 and 24-30.
c. The species that are in an order with two families are 1-7 and 8-23.
d. The species that are in a class with three orders are 1-23, 24-33 and 34.
e. Species 8 is more closely related to species 16 than species 6 because species 8
and 16 are in the same family.
f. Species 34 has concentric circles around because it is the only species in that
genus, family and order.
3a. The differences between the porifera phylum and the mollusca phylum are
that porifera phyla have many pores over the surface through which water is
drawn in for filter feeding. They also have a variety of shapes. Mollusca have a
fold in the body wall called the mantle secretes the shell. They use a hard rasping
radula to feed.
b. The external recognition features of the annelida are that their bodies are
made up of many ring-shaped segments, often with bristles. Their blood vessels
are often visible. The external recognition features of the arthropoda are that
they have segmented bodies and legs or other appendages with joints between
the sections.
c. The external recognition features of the cnidaria are that they have tentacles
arranged in rings around their mouths, that have stinging cells. Jellyfish also have
polyps or medusae. The external recognition features of Platyhelminthes are that
they have thin and flat bodies shaped like a ribbon. They have no blood system or
a system for gas exchange.
4a. The group that humans are placed in on each of the seven levels of the
hierarchy of taxa are sapien for species, homo for genus, hominidae for family,
ominivora for order, mammalia for class, and Animalia for kingdom.
b.
c. Keys are used to define an organism through a process of elimination. The key
is split into two facts about the organism, one being right, one being wrong. The
right fact will lead to another pair of facts, and the process will continue until the
organism is recognized.