Embryos of different animals show patterns of similarities. What is this evidence for?
a
that these animals all have very similar DNA
b
that these animals all have the same physical structures
c
that these animals evolved from a common ancestor
d
that these animals have linear relationships
c. that these animals evolved from a common ancestor.
bot whats the answer to
Compared to rodents, rabbits have an extra pair of incisors and other skeletal structures that are different. They also have some features that are similar. What can scientists conclude from this observation?
Rodents and rabbits share a common ancestor.
Rodents and rabbits evolved from different mammal ancestors and lack a common ancestor.
Rabbit teeth are better than rodent teeth.
Rabbits evolved from a species of rodent.
A possible correct answer could be: a. Rodents and rabbits share a common ancestor. The fact that they have some similarities, as well as some differences in their skeletal structures, suggests that they both evolved from a common ancestor but then diverged and adapted to different ecological niches.
bot whats the answer to Match each term to its proper description.
1.
primate
2.
common ancestor
3.
hominin
4.
bipedal
a.
walking upright on two legs
b.
group that includes lemurs, monkeys, apes, and humans
c.
group that includes humans and our extinct relatives
d.
organism that evolves into two or more other organisms
1. primate - b. group that includes lemurs, monkeys, apes, and humans
2. common ancestor - d. organism that evolves into two or more other organisms
3. hominin - c. group that includes humans and our extinct relatives
4. bipedal - a. walking upright on two legs
bot whats the answer to
Based on the tree, which hominin lived at the same time as H. habilis?
H. heidelbergensis
H. erectus
H. neanderthanalensis
H. sapiens
Based on the tree, H. erectus lived at the same time as H. habilis.
bot whats the answer to
There are 13 species of Darwin's finches on the Galapagos Islands. They have many similar features but differ in beak size and shape. Which explanation accounts for these characteristics?
Each finch species evolved from a different ancestor.
All finch species evolved from a common ancestor.
Finch species interbreed.
Finch species have similar diets.
b. All finch species evolved from a common ancestor. The differences in beak size and shape among Darwin's finches can be explained by natural selection acting on the variation present within a population. The ancestral finch species that colonized the Galapagos Islands diversified over time, adapting to different ecological niches characterized by available food resources.
bot whats the answer to
.
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?
claws
wings
teeth
feathers
d. Feathers. Both Archaeopteryx and modern birds have feathers, which are unique among living and extinct animals. Other non-avian dinosaurs did not have feathers, despite being related to birds, and modern mammals also lack feathers. Therefore, feathers are considered a key characteristic that supported the evolutionary transition from dinosaurs to birds.
bot whats the answer to
Which statement is correct?
All vertebrate embryos have hair.
All vertebrate embryos have ears.
All vertebrate embryos have tails.
All vertebrate embryos have legs
c. All vertebrate embryos have tails. All vertebrate embryos, including humans, initially develop a tail-like structure during their early embryonic stage. In species that retain the tail as an adult, such as primates, it continues to grow and develop. However, in species that don't need tails, such as humans, the tail-like structure will disappear by programmed cell death.
bot whats the answer to
What do these skulls in the fossil record tell us about hominin evolution?
Without a specific image or description of the skulls in question, it is impossible to provide a specific answer. However, in general, skulls in the fossil record can tell us about hominin evolution by providing information about changes in brain size, cranial shape and size, facial features, and dental characteristics. Comparisons of skulls from different hominin species and from different time periods can reveal evolutionary patterns and the emergence of new traits, such as larger brains and upright posture, that were important for human evolution.
bot whats the answer to
What do these skulls in the fossil record tell us about hominin evolution?
The nose became more prominent as hominins evolved.
The jaw grew larger as hominins evolved.
Hominins grew taller as they evolved.
Human skulls became more pointed as hominins evolved.
Without a specific image or description of the skulls in question, it is impossible to provide a specific answer. However, in general, skulls in the fossil record can provide information about changes in hominin evolution such as, the transition of the Homo sapiens skull from protruding jaws and heavy brow ridges to a smaller skull with a rounder skullcaps overtime, to better fit the larger volume of the brain. They can also provide information on changes in teeth and jaw structures, as hominins evolved diets that were increasingly based on cooked food, which allowed them to spend less time chewing and digesting. These changes may be related to the formation of Homo sapiens with unique traits and characteristics.
bot whats the answer to
During a trip to the museum, you come across a display on the gray whale and one of its ancestors. The ancestor whale appears to have nostrils at the front of its skull, while the modern gray whale has nostrils at the top of its skull. If you were to add a transitional fossil to this display, what would its skull look like in terms of nostril placement?
The transitional fossil would have nostrils at the front of the skull.
The transitional fossil would have nostrils in the back of the skull.
The transitional fossil would have nostrils in the middle of the skull.
The transitional fossil would have nostrils at the top of the skull.
The transitional fossil would have nostrils in the middle of the skull. This is because the transition from nostrils at the front of the skull to nostrils at the top of the skull occurred gradually over time, with intermediate forms having nostrils at intermediate positions. Therefore, a transitional fossil between the ancestor whale and the modern gray whale is likely to have nostrils in a position between the two, potentially in the middle of the skull.
bot whats the answer to
Alisha wants to discover what the people in her audience already know about fossils. This will help her communicate effectively.
true
false
True. It is always a good idea to assess the prior knowledge of your audience before presenting new information, as this can help you tailor your message and better engage with your audience. By knowing what they already understand, you can avoid oversimplifying or overstating concepts and can focus on providing new and relevant information.
bot what is the answer to
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?
birds and humans
amphibians and fish
birds and reptiles
amphibians and reptiles