Answer:
A new study provides a key insight into a milestone event in the early evolution of life on Earth -- the origin of the cell nucleus and complex cells. Scientists peered deep inside current living cells, known as Archaea - the organisms that are believed to most closely resemble the ancient intermediates between bacteria and the more complex cells that we now know as eukaryotic cells.
Explanation:
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Since the population of finches had decreased when deforestation and logging started, and it returned to its original values prior to deforestation when locals started to replating trees, it follows from these facts that trees are being a limiting factor in finches' populations, either because they're acting as niches, food, both or anything else that these populations needed to survive.
Therefore, the correct answer to this question is option D.
<span>1. List the adaptation that ALL vertebrates have in common.
The vertebrate is a subphylum of kingdom Animalia. The member of subphylum should have a spine or vertebrae. Therefore, all vertebrates should have vertebrae. All the member should have all the classification above the subphylum like cranium from craniate and notochord from chordate.
2. List all the adaptations that your chordate has (as shown on the cladogram).
The frog is part of Amphibian that shown on green lines. It should have all the organ above its classification such as jaws and paired appendages, lungs(frog can live in the land), four limbs. It also has all the trait of vertebrates that was described above.
3. To which type of chordate is your chordate most closely related?
If your chosen chordates are the frog, then salamander and caecilian would be the most closely related chordates. The reason is that salamanders and caecilians are also amphibians like the frog, which means they have all the trait from amphibians.
4. Why do you think endothermy appears at two points on the cladogram?
Endothermy member is the chordates that have warm blood. There are two chordates that have warm blood in the cladogram, the apes(mammals) and the bird. Since the bird is classified as reptile the but the ape classified as mammals, the cladogram needs to put two </span>endothermy.<span>
5. Amniotic eggs have a waterproof membrane. What type of animals evolved from animals that lay amniotic eggs?
</span>The amniotic eggs will be found on the reptile. The eggs have a waterproof membrane to prevent water comes out of the egg. Water is an important resource and if a high amount of water leak from the egg, the egg will be dried out and die. <span>
6. In what type of habitat do you think the evolution of amniotic eggs helped animals survive? Hint: In what habitat do all animals without amniotic eggs live?
The amniotic eggs help an animal that lives on the dry land to make offspring. All of the animals before reptiles are living in the water and spawn their eggs there so there is no concern about losing water, thus waterproof membrane is not needed. Reptile spawns their eggs on land, so it needs a method to contain the water.</span>
The aorta is the main artery of the body which makes sense why it would be thicker than the other vessels in the human body. The aorta is of vital importance because it is responsible for distributing oxygenated blood to all parts of the body.
Answer:
B
Explanation:
Cytokinesis, which is the division of a cell's cytoplasmic content, is the final step of cell division. After which the genetic material of a cell duplicates, they move towards opposite directions in the cell. The cytoplasm of the original cell halves itself equally for the two resulting cells. Though both animal cells and plant cells go through cytokinesis, they undergo it differently due to the presence of cell wall in addition to the cell membrane in plant cells.
In plant cells, cytokinesis mainly involves the formation of a CELL PLATE at the equator of the parent cell that will soon divide into two. The cell plate, which is the future doubled cell wall that will become separated into two cells, divides the cytoplasm.
In animal cells, cytokinesis occurs in a more complex manner. A fissure called CLEAVAGE FURROW develops by the formation and contraction of the CONTRACTILE RING, which is present beneath the parental's cell membrane and made up of actin filaments. The created furrow grows deeper (as the actin ring contracts) between the two resulting cells until they meet the membrane and pinch off (inwardly), separating from one another. Hence, resulting in two separate daughter cells.
