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erica [24]
3 years ago
14

In which phylum do we first see tissue-level organization?

Biology
2 answers:
Sliva [168]3 years ago
4 0
Cnidarians were the first phylum that scientists saw tissue level organization in. Tissue level organization meaning cells all of one type start to function in a unified way.
statuscvo [17]3 years ago
3 0

Answer: The correct answer is- phylum- Cnidaria.

All living organisms are composed of building blocks termed as cells. Cells that perform similar functions are grouped together to form tissue.

The phylum where tissue-level of organization is seen first is Cnidaria. This phylum contains approximately 10,000 species ( such as jellyfish, sea anemones, corals).

Cnidarians have cells that are organized into two types of tissues, which occur in two layers. External tissue layer is ectoderm and inner tissue layer is endoderm.

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What is the difference between a phenotype and a genotype
Elden [556K]
A phenotype is the physical appearance of a characteristic.
A genotype is the code for that characteristic.  
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3 years ago
Where is the energy in the products of photosynthesis?
Slav-nsk [51]
The plant receives energy from the sun and food sources.
4 0
3 years ago
quizlet i]n the heart, valves are located in the heart, valves are located just between the ventricles and the arteries. just be
ser-zykov [4K]

In the heart, the valves are located between atria and ventricles and between ventricles and arteries (option D).

<h3>What are valves in the heart?</h3>

Valves are membranous partitions which permit the passage of the contents of a vessel or cavity in one direction, but stop or control the flow in the opposite direction.

Valves in the heart enforce a one-way blood flow through the heart and separate atria from ventricles, and ventricles from the large arteries that leave them.

The four valves in the heart and their location is as follows:

  1. tricuspid valve: located between the right atrium and the right ventricle
  2. pulmonary valve: located between the right ventricle and the pulmonary artery
  3. mitral valve: located between the left atrium and the left ventricle
  4. aortic valve: located between the left ventricle and the aorta.

The valves between the atria and ventricles are called atrioventricular valves or cuspid valves while those at the bases of the large vessels leaving the ventricles are called semilunar valves.

Therefore, it can be said that the valves of the heart are located between atria and ventricles and between ventricles and arteries.

Learn more about valves of the heart at: brainly.com/question/28266922

#SPJ1

5 0
1 year ago
This is also due today! Please help :(
serg [7]

Answer:

For the cardboard column the 4 u DIDNT answer in order r Y Y N N

And for the Topaz column the ones in order that u DIDN'T answer are N Y Y

Explanation:

Cardboard is a solid and is inorganic but not naturally occurring or a mineral.

Topaz is not inorganic but is naturally occurring is a crystalline structure and is a mineral

4 0
2 years ago
In dogs, genes A and B are required for scent.Individuals homozygous for either one or both of the nonfunctional recessive allel
andrew11 [14]

Answer:

6/16 dogs will not be able to smell.

Explanation:

Genes A and B are considered for scent smell.

Individuals homozygous for either one or both of the nonfunctional recessive alleles are not able to smell.

The final cross would be AaBb x AaBb which has outcome of;

Individual with homozygous nonfunctional recessive alleles (bold ones):

  • One nonfunctional recessive alleles: Aabb, aaBB, aaBb, Aabb, aaBb (5/16)
  • Two nonfunctional recessive alleles: aabb (1/16)
  • All nonfunctional recessive alleles: 6/16 dogs that could not smell scents
5 0
3 years ago
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