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Pavlova-9 [17]
3 years ago
6

Which of the following could be considered the most recent common ancestor of living tetrapods? a) a sturdy-finned, shallow-wate

r lobe-fin whose appendages had skeletal supports similar to those of terrestrial vertebrates b) an armored, jawed placoderm with two pairs of appendages c) an early ray-finned fish that developed bony skeletal supports in its paired fins d) a salamander that had legs supported by a bony skeleton but moved with the side-to-side bending typical of fishes
Biology
1 answer:
tensa zangetsu [6.8K]3 years ago
8 0

Answer:a) a sturdy-finned, shallow-water lobe-fin whose appendages had skeletal supports similar to those of terrestrial vertebrates.

Explanation:

An ancestor - An earlier type of a species at any distant time — a progenitor.

A tetrapod is any vertebrate with four limbs. It includes any vertebrate (such as birds or snakes) that have evolved from early tetrapods — especially all members of the superclass Tetrapoda.

The presence of bones that support the appendages in Lobe – fin fish were found to be similar to the categorical skeletal supports found in the limbs of sample tetrapods. The sub class crossopterygii includes the Lobe – fin fish, which is seen as one of the recent common ancestor of living tetrapod today.

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The characteristics associated with the development of the organs and structures of the body that directly relate to reproductio
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Answer: Primary Sex characters

Explanation:

The primary sexual characters are associated with the growth of sexual organs such as uterus, vagina, penis and other reproductive organs in the human beings.

These organs are present in the body when the child is borne. This is because they grow when the child is inside the womb.

The development and maturation of these organs takes place during the later stages of life.

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3 years ago
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Whitepunk [10]

Answer: the beetle is neither harmed nor helped by the mite.

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4 years ago
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3 years ago
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garik1379 [7]
<span>How are the dark reactions that occur in plants dependent on the light reactions?
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Shamona, a pregnant mother in Flint, Michigan, is concerned about the drinking water, which shows high levels of lead. Shamona s
STatiana [176]

Answer:

Option (3).

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