Which one of these chordate groups lacks a post-anal tail and a notochord as adults?

Answers

Answer 1
Answer: The answer is tunicates.

Tunicates belong to phylum Chordata. Thus, it is expected to have dorsal nerve cords and notochords. But, as adults, they lack a post-anal tail and the notochord. The reason they belong to phylum Chordata is that their larval stages have all the characteristics of phylum Chordata - nerve cords, post-anal tails, and notochord. During metamorphosis to adults, tunicates lose these characteristics.

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Changes in the DNA sequence that affect genetic information are known asa. replications c. transformations b. mutations d. prokaryotes

Where is the nucleus found?

Answers

Answer:

in an animal cell, the center

Explanation:

Answer:

The nucleus is found in the center. :)

Explanation:

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Based on the cladogram, which group of plants is most closely related to the ancestors of all plants?

Answers

It considered that all terrestrial plant species that exist today have evolved from Rhyniophyta (a type of spore plants, compiled by the most primitive forms of vascular). Now terrestrial plants presents by the Moss family, psilotaceae, lycopsids, class of the Horsetail, fern, gymnosperms and flowering plants.  Based on the cladogram, It assumed that the ancestors of all existing plants are algae, particularly green.

What are the reactants of photosynthesis??

Answers

The reactants of photosynthesis are water, light and carbon dioxide, while the products are oxygen and sugars. Cellular respiration occurs in direct synchronicity with this process, using the products of photosynthesis as its reactants and producing its reactants. 

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Final answer:

The primary reactants of photosynthesis are water, carbon dioxide, and light energy, usually from the sun. Through a complex series of reactions, photosynthesis transforms these inputs into glucose and oxygen.

Explanation:

The process of photosynthesis, a key biological process, requires certain reactants or inputs to proceed. The primary reactants of photosynthesis are water (H₂O), carbon dioxide (CO₂), and light energy, typically from the sun. In the photosynthesis process, these inputs are transformed through a complex series of reactions into the products glucose (C6H12O6), a simple carbohydrate molecule that stores energy and the structural backbone for much of life on Earth, and oxygen (O2).

The simplified chemical equation representing photosynthesis is: 6CO₂ + 6H₂O + light energy --> C6H12O6 + 6O2

So, in a nutshell, photosynthesis uses carbon dioxide and water, along with energy derived from sunlight, to produce energy-storing glucose and oxygen.

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How should you test a hypothesis?How should you test a hypothesis?by writing a mathematical equation

by making a single observation

by performing a controlled experiment

by answering a series of questions

Answers

Analyze sample data.  Test statistic. When the null hypothesis involves a mean or proportion, use either of the following equations to compute the test statistic. ...P-value. The P-value is the probability of observing a sample statistic as extreme as the test statistic, assuming the null hypotheis is true.

Answer:

C.) By performing a controlled experiment

Explanation:

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Which of the following carbon compounds stores and transmits hereditary information?A.Carbohydrates
B.Lipids
C.proteins
D.Nucleic Acids

Answers

The Answer Is D 

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Final answer:

Nucleic acids are the carbon compounds that store and transmit hereditary information. Primarily DNA and RNA, they serve as the molecular 'blueprints' for the formation of proteins necessary for cellular structure and function.

Explanation:

Among the listed compounds: Carbohydrates, Lipids, Proteins, and Nucleic Acids; it is the nucleic acids that store and transmit hereditary information. Nucleic acids, such as DNA and RNA, are complex compounds that serve as the blueprints of life.

DNA (Deoxyribonucleic Acid), in particular, contains the molecular instructions for the proteins that our cells need for structure and function. RNA (Ribonucleic Acid), on the other hand, helps in transmitting these instructions from DNA to the protein-building machinery of the cell.

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What kind of air masses form over land? Maritime air mass Polar air mass Continental air mass Tropical air mass

Answers

The correct answers are:

- Polar air mass;

- Continental air mass;

The polar air masses form predominantly over land, or rather ice. They form over the poles and their close proximity, with the ones forming on the south pole being formed directly over Antarctica as a land mass, while the ones on the north pole being formed over ice, or rather the frozen ocean. They are very cold and very dry air masses.

The continental air masses form above land, deeper into the mainlands of the continents, which is why that have this name. They can be either very cold and dry in winter, or very hot and dry in the summer.

Answer:

Continental air mass

Explanation:

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