Meiosis Mitosis

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PART II
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Meiosis/ Mitosis
Cells
Worms
Mollusks
Arthropods
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What is the difference between mitosis and
meiosis?
Mitosis produces 2 identical diploid cells while
meiosis produces 4 haploid sex cells
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What is crossing over?
The process that permits the exchange of genetic
material between mother and father chromosomes
Bonus What phase does it occur in?
Prophase I
5
Haploid cells contain how many chromosomes
compared to the parent cell?
They contain half as many as the parent
6
In plant cells, what is created as a form of
division during cytokinesis?
Cell plate
Bonus what is the form of division in animal
cells called?
Cleavage furrow
7
What is the difference between spermatogenesis
and oogenesis?
Spermatogenesis produces 4 sperm while oogenesis
produces one egg cell
8
In addition to one egg cell, what are the other
three products of oogenesis?
Polar bodies
9
What type of worm exhibits septa that contain
parapodia and setae?
Polychaete Worm
10
The nervous system of the worms, which is
different than the cnidarians, consists of
Cerebral Ganglion
11
Worms that feed on particulate organic matter
present in the water are known as ___________
feeders.
Suspension
12
A gut that goes through all of the segments is
called a
Coelom
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Chinese liver fluke are found in which class of
Platyhelminthes?
Trematoda
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DAILY DOUBLE
What is the class of the Beard Worms
Pogonophora
15
Squids have how many arms and how many tentacles?
8 arms, 2 tentacles
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In bivalves, what is a siphon used for?
filtering food and respiration
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What is the purpose of an ink sac in cephalopods?
To distract potential predators for escapes
18
Name the four main classes of mollusks.
Cephalopoda, Gastropoda, Bivalvia, and
Polyplacophora
Bonus What class do the tusk shells belong to?
Scaphopoda
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What are the three main body sections of a
mollusk?
visceral mass, foot, mantle
20
What is the organ in place of the brain found in
gastropods and bivalves?
cerebral ganglion
Bonus True or false Cephalopods have a true
brain
True
21
What are compound eyes?
Eyes composed of many individual light detectors,
each containing its own lens
22
What is the larva of crustaceans called?
naupilus
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Arthropods grow through what process?
molting
Bonus About how many times will a blue crab molt
in its lifetime?
25-30
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DAILY DOUBLE
In respiration, what is the difference between
spiders and crayfish?
Spiders use book lungs/trachea, and crayfish use
gills
25
On a crayfish, what are the small appendages used
for locomotion and reproduction called?
swimmerets
Bonus Where are they located?
The abdomen
26
Name the two classes of myriapods and give an
example of a species from each
Diplopoda- millipedes Chilopoda- centipedes
27
What is the Function of the Mitochondrion?
Transfers Energy from organic compounds to ATP
28
Describe the polar nature of the Phospholipid
bilayer of the cell membrane
Hydrophilic heads point outward and hydrophobic
tails point inward
29
This Organelle digests food when taken in by
Endocytosis
Lysosome
30
These Organelles eventually form spindle fibers
during Prophase of cell division
Microfilaments and Microtubules
31
Prokaryotic cells reproduce by a process called
Binary Fission
32
What three parts make up the cell theory?

• All living things are composed of one or more
  cells
• Cells are the basic units of structure and
  function in an organism
• Cells come only from the reproduction of cells