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AleksAgata [21]
3 years ago
5

During gastrulation, animals whose first opening is the anus are called

Biology
2 answers:
Georgia [21]3 years ago
8 0

Answer:

the answer is the deuterostomes.

ELEN [110]3 years ago
4 0
<span>The biological term for such organisms is "deuterostomes". Those who's first opening is the mouth are called protostomes. </span>
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This type of research is descriptive and investigates the why and how of decision making, not just what, where, when. These meth
sweet [91]

Answer:

The correct answer is - option D.

Explanation:

Qualitative research is research or scientific method which is involved in various subject matters and fields, of collecting observation and nonnumeric data. This is the research normally is descriptive, exploratory and other qualitative methods to answer the question.

It is an investigation that is not just addressed what and where but also to the questions like how, and why. This is the reason these are used in small samples rather than large samples and also used on species cases to get information.

Thus, the correct answer is - option D.

4 0
4 years ago
An individual’s EKG shows changes in atrial contraction. Which image shows contraction of the atria?
Jlenok [28]

The right answer is The first image (the left one).

An atrium is an upper cavity of the heart, delimited by a thin wall, receiving blood from the bloodstream. There are two in the human heart, they allow the passage of blood from the veins (cellars and lungs) to the ventricles (right and left).

In its upper part (near the entrance of the superior vena cava) is located the sinus node, microscopic structure from which the electrical impulse which ensures the contraction of the heart (especially atrium) ...

The depolarization of the action potential is conducted step by step in the cells of the right and left atria, accompanied by a contraction of the muscle fibers.

7 0
3 years ago
Read 2 more answers
Match the term to its description. Deforestation Read Answer Items for Question 1 Combustion Read Answer Items for Question 1 Ci
Lesechka [4]
A. Combustion
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7 0
4 years ago
The cell membrane _____. is made of phospholipids is a single layer is embedded with proteins controls the transfer of materials
stepladder [879]
The cell membrane... is made of phospholipids (consist of a lipid bilayer)
7 0
4 years ago
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The negative effects of chemical control of weeds on rangelands
Nutka1998 [239]

Answer:

Chemical residue remain on the vegetation.

Explanation:

The negative effects of chemical control of weeds on rangelands is that the chemical residue remain on the vegetation in rangeland which is dangerous for animals that feed on vegetation because the chemicals are toxic that cause serious damaged. Sometime the chemical also damaged the  weeds as well as vegetation of rangelands and also kill the beneficial insects that is needed by the plants present in rangelands.

4 0
3 years ago
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