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Biology

Biology
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The duck-billed platypus and other monotremes differ from other mammals in that they
lay eggs
Lampreys differ from fishes in that lampreys
lack jaws and paired fin
The two distinguishing features of mammals are the presence of
hair an mammary glands
Two features of ray-finned fish not found in sharks are _____.
a swim bladder and opercula
The first vertebrates to live on land were most likely derived from _____.
lobe-finned fishes
(Many extant lobe-fins have structures (muscular fins supported by stout bones, lungs) that suggest they were well-suited to colonizing land. Several transitional fossils linking lobe-fins to tetrapods have been discovered.)
What is feathered wings, endothermic metabolism, and a number of adaptations for flight
Birds
Oldest bird, that resemebles a dinosaur
Archaepteryx
requires heat from external sources
Ectothermic
Name a few amniotic reptiles
Lizards, snakes, turtles, crocodilles and birds
1st tetrapods that are able on move on land
Amphibians
tetrapod
jaw vertibrates with limbs and feets
hagfish produces _____ as a defense mechansim
slime
What are parasites that penetrate the sides of fishes with their rasping tongues?
Lampreys
Whats are the three lineages of jawed fishes
Chondrichthyes, Ray-finned fishes , Lobe-finned
Sharks and rays have a flexible skeleton made of cartilage....
fishes includes the sharks, rays, and skates, paired
Chondrichthyes
What animal has Internal skeleton , fattened scales
Operculum and swim bladder
Ray-finned fishes
What has muscular pelvic and pectoral fins, supported by rod-shaped bones
Lobe-fins
This group includes frogs, salamanders, and caecilians
Amphibians
amniotes—tetrapods with a terrestrially adapted egg
Reptiles
a private pond in which the embryo develops
amniotic egg
Evolved from a lineage of small, two-legged dinosaurs called theropods
Birds
Living birds evolved from a lineage of birds that survived the _____ ______
Cretaceous extinctions
relatively large brains and display complex behaviors
birds
generates own heat (body heat)
Endotherms
Amniotes that have hair and produce milk
Mammals
Mammals are endothermic amniotes or exodohermic
endothermic amniotes
generally have larger relative brain size than other vertebrates and a relatively long period of parental care
mammals
What are egg-laying mammals
Monotremes
Wht allows nutrients from the mother's blood to diffuse into the embryo's blood
The placenta
What have a brief gestation
Marsupials
The offspring complete development attached to the mother's nipples, usually inside a pouch or
Marsupium
What are bear fully developed live young ?
Eutherians
What does the mammalian order Primates includes
lemurs, tarsiers, monkeys, and apes
Many primate characters are arboreal adaptations
Example are:
Shoulder and hip joints
Grasping hands and feet
Sensitive hands and feet
A short snout and forward-pointing
The ______, ______, and _____ make up one group of primates
lorises, lemurs, and pottos
The______ form a second group of primates
(tree dweller)
tarsiers
The_______ group includes monkeys, apes, and humans
Anthropoid
What have large brain, rely on eyesight and has thumbs
Anthropoids
are the only fully arboreal apes
They are monogamous
Gibbons
_____, ______,and ______ have a high degree of social organization
Gorillas, chimpanzees, and humans
have relatively large brain size and flexible behavior
Apes
are shy and solitary and live in rain-forest trees and the forest floor
Orangutans
the largest of the apes, are fully terrestrial
gorillas
make and use tools
Chimpanzees
The oldest possible hominid yet discovered
Sakelanthropus tchadensis
Our species emerged from
Africa
Eutherians include _____.
A. humans
B. duck-billed platypus
C. kangaroos
D. most of the native mammals of Australia
E. egg-laying mammals
A. humans
What is the first distinctively hominid trait to appear in the fossil record
upright walkin (bipedaism)
What features of hominids evolved most recently?
Enlarged brains