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USPshnik [31]
3 years ago
8

Locomotion in Metazoa is usually due to the contraction of what? a. Skeleton b. Muscle c. Skin d. Nerves

Biology
1 answer:
Ede4ka [16]3 years ago
7 0

Answer: b. Muscles

A metazoa is a division of animal kingdom that includes all animals expect protozoa and sponges. Metazoa division includes multicelluar animals, which exhibit highly differentiated cells. They have muscular and nerve system and well coordinated tissues and organs. Locomotion requires a coordination activity of muscular, skeletal and neural system. It is mainly achieved by contraction and relaxation of muscles that occurs due to specialized muscle proteins named as actin and myosin which receives signals from nerves.

Hence, locomotion in metazoa is due to contraction of muscles.

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Which of the following are some examples of rapid environmental changes? Please select all that apply.
Stolb23 [73]

Answer:

fire

landslide

avalanche

Explanation:

Fire, landslides, and avalanches are the examples of rapid environmental changes because they are able to destroy or affect the structure of living organism in a particular area. For example, fires can destroy all forms of life within days. A recent event of wildfire in Austria killed more than 1 billion of animals. Similarly, landslides and avalanche are geological calamities that are caused by the movement of a large mass of rock debris or snow moving downhill. The living organisms living there would be killed and this process can diminsh many forms of life (multicellular eukaryotes) rapidly.

On the other hand, (ecological) succession is a very slow process that results into change or disappearance of living organisms or particular species or ecological community in an area. This process can take place over decadaes, thousands or million of years. It can also lead to the species extinction as well.

3 0
3 years ago
Why compounds are the building blocks of DNA macromolecules?
Vladimir79 [104]
Nucleotides are the building blocks of DNA macromolecules
6 0
3 years ago
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labwork [276]

Answer:

1=gametes

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6 0
3 years ago
A litter of pigs is born three are female and three are male which set of symbols correctly describe the gender of each piglet
kondaur [170]

Ans. (B).  XX, XY ,XX, XY ,XY, XX .

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Thus, the correct answer is option (B).  

5 0
3 years ago
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ehidna [41]
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