Biol 107 Lab Final
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Biol 107 Lab Final
What is a gymnosperm and what are their main features?
Male and female cones
Pollen dispersed by the wind
Needle or scale like leaves
Cones have "wing" for being dispersed over long distances
What are some advantages that seed plants have over seedless plants (mosses and ferns)?
Fertilization does not require water
Diploid zygote forms diploid seed that is resistant to drying out
What are angiosperms?
Make fruits to protect zygote
What are the characteristics of a monocot?
Flower parts in multiples of 3
1 seed leaf (cotyledon)
Vascular bundles scattered throughout the stem
Large xylem, smaller phloem
What are the characteristics of a dicot?
Flower parts in multiiples of 4 or 5
2 seed leaves (cotyledons)
net like pattern of veins
vascular bundles in a ring in the outer part of stem
large xylem, smaller phloem
Label the parts of the flower:
2. Stamen (male)
How are angiosperms pollinated?
Primarily animals and insects!
What are the 9 phyla of animals and their main characteristics?
: Sponges - body with many pores, no tissue layers, no symmetry
: Hydra, jellies, coral - 2 cell layers, radial symmetry, stinging tentacles
: planaria, tapeworm - flat body, one opening for digestion, bilateral symmetry, cephalization
: nematoda - mouth and anus, bilateral symmetry, non segmented
5. Segmented worms
: earthworms, annelida, leeches - body divided into segments, mouth and anus, moves with bristles, cylindrical and longitudinal muscles
: clams, snails, squid, octopus - shell of calcium, bivalves, gastropods, cephalopods
7. Echinoderms - starfish, sea urchin, sand dollar - pentaradial symmetry, tube feet for motion and suction
: exoskeleton, jointed legs - myriapods (centipedes), crustaceans (crabs, 2 pairs of antennae), arachnids (spiders), insects (6 legs, 2 pairs of wings)
: animals with back bones!
What are the 4 characteristics that all chordate embryos share?
1. dorsal hollow nerve cord
3. gill slits
4. post anal tail
What are the 7 classes of chordates?
1. Tunicates and lancelets
: no cephalization, filter feeders
2. Jawless fish
: lampreys - constant open mouth, cranium and vertebrae
3. Cartilage fish
: sharks, rays - skeleton of cartilage
4. Bony fish
: perch - bones, air bladder, 2 chambered heart
: frogs, toads - 1/2 water 1/2 land, external fertilization, small lungs, cutaneous respiration, 3 chambered heart
: snakes, birds - water tight, scaly skin, internal fertilization, eggs, cloaca, avian (4 chambered heart, endotherm) and non avian (3 chambered)
: mammary glands, hair, endothermic, placenta
What are the main orders of mammals?
1. Chiroptera - bats
2. Rodents - rats, mice
3. Carnivores - cats
4. Even toed hoofed - pigs
5. Primates - monkeys, humans