Fossils and genes are used to determine(1 point)
how many mutations occurred in a species over time.
how species will change over time****.
differences between organisms.
how species interact with each other.
2. A common ancestor is an organism that is the(1 point)
direct ancestor of two or more different organisms.*******
indirect ancestor of two or more different organisms.
indirect ancestor of one organism.
direct ancestor of one organism.
3. A scientist discovers a fossil of a new organism and places it in the fossil record. The fossil shows the organism had similar structures to organism X, which appears later in the fossil record. Which conclusion about the organisms is most reasonable?(1 point)
The fossils came from the same organism.
The fossils are from an organism that is a descendant of organism X.
The fossils are from an organism that is an ancestor of organism X.********
The fossils are from organisms that lived in the same location.
4. Which group includes only bipedal animals?(1 point)
primates
lesser apes
hominins*****
hominids
5. What does the fossil record tell us about the evolution of the hominin skull?(1 point)
The part of the skull surrounding the brain grew larger as hominins evolved.*******
The face stuck out farther from the rest of the skull as hominins evolved.
The part of the skull surrounding the brain grew more pointed as hominins evolved.
The face grew wider as hominins evolved.
6. Compared to rodents, rabbits have an extra pair of incisors and other skeletal structures that are different. What can scientists conclude from this observation?(1 point)
Rabbit teeth are better than rodent teeth.
Rodents and rabbits evolved from different mammal ancestors and lack a common ancestor.
All rodents have a more recent common ancestor than any rodent and rabbits******.
Rabbits evolved from a species of rodent.
7. Humans, mice, and giraffes have seven vertebrae in their necks. What can scientists conclude from this observation?
(1 point)
All vertebrates have seven vertebrae in their necks.
Each animal independently evolved this trait.
These animals descended from a common ancestor.*******
Humans, mice, and giraffes have the same number of bones.
8. Archaeopteryx is considered to be a transitional form between dinosaurs and birds. Which of the following is a trait that is unique to both Archaeopteryx and modern birds? (1 point)
wings*****
feathers
teeth
claws
9. Which pattern emerged in horse evolution as scientists studied early horse fossils and modern horse bones?(1 point)
Early and intermediate horses had four foot bones (three small and one large), and modern horses have three foot bones (two small and one large).
The earliest horses had four foot bones (three small and one large), intermediate forms had three foot bones (two small and one large), and modern horses have a single large foot bone.
Early and intermediate horses had three foot bones (two small and one large), and modern horses have four foot bones (three small and one large).
The earliest horses had a single large foot bone, intermediate forms had three foot bones (two small and one large), and modern horses have four foot bones (three small and one large).*****
10. Listed below are characteristics that serve as evidence of shared ancestry between fish and reptiles. Select the option that applies only to embryos rather than adults.(1 point)
gill slits that turn into gills
scales as a form of skin
hatch from and lay eggs
spines and tails******
11. Fish, amphibians, reptiles, birds, and mammals have similar embryos.
They all start with gill slits. Fish and some amphibians grow to have gills. Some amphibians, reptiles, birds, and mammals develop lungs to breathe air.
They all start with tails. Fish, some amphibians, reptiles, and birds grow tails. Humans do not keep their tails.
Fish and reptiles develop scales. Amphibians, birds, and humans have skin. Birds have feathers, and humans have hair.
Which two animals exhibit the most linear relationship?(1 point)
birds and humans*******
amphibians and fish
amphibians and reptiles
birds and reptiles
12. Which evidence supports the theory that fish and mammals evolved from the same ancestor? (1 point)
They both produce egg and sperm cells that must join in fertilization.
Their embryos share features in the late stages of development.******
Their embryos share features in the early stages of development.
They both emerge from fertilized eggs.
13. Which pattern is evidence that reptiles and amphibians share the same ancestor? (1 point)
They have backbones.******
They have eyes.
They have legs.
They have similar skin.
Basically...
1.) Differences between organisms
2.) Direct ancestor of two or more different organisms
3.) The fossils are from an organism that is an ancestor of organism X.
4.) hominins
5.) The part of the skull surrounding the brain grew larger as hominins evolved.
6.) All rodents have a more recent common ancestor than any rodent and rabbits.
7.) These animals descended from a common ancestor.
8.) feathers
9.) The earliest horses had four foot bones (three small and one large), intermediate forms had three foot bones (two small and one large), and modern horses have a single large foot bone.
10.) gill slits that turn into gills
11.) amphibians and fish
12.) Their embryos share features in the early stages of development.
13.) They have backbones.
14.) do yourself :) there is some help on brainley if you absolutely need help with fourteen. have a nice night or day!
Students answers are right except for 1, 8,9,10,11,12 the answer for these are 1, differences between organisms. 8, feathers. 9, The earliest horses had four foot bones. 10, Gill slits that turn into gills. 11, amphibians and fish. 12, Their embryos share features in the early stages of development. 100% correct just finished test so these are the right answers
@Anyone,
If hi said that they are having a mental breakdown, then they are. Please leave them alone, and why the hell are you on this website if u don't need help with your answers? People actually come here for help or confirmation on their answers, so if you are so perfect and don't know the struggle then get off of this website.
1. differences between organisms.
2. direct ancestor of two or more different organisms.
3. The fossils are from an organism that is an ancestor of organism X.
4. hominins
5. The part of the skull surrounding the brain grew larger as hominins evolved.
6. Rodents and rabbits share a common ancestor.
7. These animals descended from a common ancestor.
8. feathers
9. The earliest horses had four-foot bones (three small and one large), intermediate forms had three-foot bones (two small and one large), and modern horses have a single large foot bone.
10. gill slits that turn into gills
11. amphibians and fish
12. Their embryos share features in the early stages of development.
13. They have backbones.
14. Fossils are important because they show what life used to be like back then. Natural selection is when one animal has the same bone structure as its ancestor. One example of natural selection is the chicken and The mighty T.rex. These two animals have similar bone structures and walk pretty much the same. In fact, if we end up making dinosaurs, scientists are gonna use some bone matter and genes from chickens!
:)
Have an amazing day!
(Don't copy #14, just use it as inspiration!)
Smartiey Pants is 100% correct
I'M STUPID I'M DUMB AND I'M HAVING A MENTAL BREAKDOWN I NEED HELP WITH 14
omg do this if you wanna have 100% @Your Dad with the milk you saved my grade you are now my lord and savior (!-!)
#14
Fossils are very important in today's society because they can help us find out what life was a long time ago. The more we know about the past, the better our future is. Plus, if we can find out a way to bring extinct animals back to life, it could really help the world. Some of the stuff you can find in fossils might be a new cure even.