Which of the following correctly describes the major types of animals? A) All chordates share a common ancestor, but there is no common ancestor of all invertebrates.
B) All invertebrates are chordates; vertebrates are a group that is separate from both invertebrates and chordates.
C) All invertebrates are chordates; vertebrates are a group that is separate from both invertebrates and chordates.
D) Chordates are the largest group, and it is subdivided into two groups: vertebrates and invertebrates.

Answers

Answer 1
Answer: I think that "A) All chordates share a common ancestor, but there is no common ancestor of all invertebrates." correctly describes the major types of animals.
Answer 2
Answer:

Answer:

The most appropriate answer would be option A.

The chordates refer to the organisms which belong to the phylum Chordata. They possess anatomical features like notochord, pharyngeal slits, dorsal nerve cord, post-anel tail, and endostyle during some period of their life cycle. They include classes amphibians, fish, reptiles, birds, and mammals. These organisms are believed to share a common ancestor.

In contrast, invertebrates refer to the organisms which lack a vertebral column. They include all the organisms other than vertebrates. For example, they include arthropods, mollusks, annelids, and cnidarians.


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1. How do organisms obtain and use the energy they need to live and grow?

Answers

Answer: Through their Respitory and Digestive Systems.

Explanation: Organisms breathe in order to get necessary oxygen into the body as well as consume foods and liquids in order to get all the other nutrients required to make energy. Energy is created with these nutrients through individual cells in a form called ATP.

They do this by a process called photosynthesis

What is the importance of soil?

Answers

Soil is very important to us. We need it to grow our food. Humans have grown crops in soil for thousands of years.

But in some places, crop growing has increased soil erosion. This is because the soil is less protected from wind and rain. Eroded soil produces fewer crops. it is causing problems for farmers.


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Testosterone is an example of a chemical signal that affects the very cells that synthesize it, the neighboring cells in the testis, along with distant cells outside the gonads. thus, testosterone is an example of ________. i. an autocrine signal ii. a paracrine signal iii. an endocrine signal

Answers

All three possible choices: autocrine, paracrine, and endocrine signals.

If citizens are warned and given plenty of time to evacuate, does the federal government still have a responsibility to spend money and resources to perform rescue operations and provide aid?​

Answers

Answer:

this is not biology

Explanation:

One difference between cell division in plant cells and in animal cells is that plant cells have A)centrioles.
B)centromeres.
C)a cell plate.
D)chromatin

I need also some information/examples about this :)

Answers

The answer is C) a cell plate

What is the minimum number of data points an experiment should gather?

Answers

Answer;

3 data points

Explanation;

  • The minimum number of data points that an experiments should gather is 3 points.
  • Data points are discrete units of information in a scientific experiment. In statistics or even scientific experiments a data point is determined by measurement or research and may be represented numerically or graphically.
  • Data points may also refer to information that is gathered in a scientific experiment, that needs to be analyzed for the purpose of deriving possible results or conclusions. An experiment requires a minimum of three data points from which a graphical representation can be obtained from.
The minimum number is 3