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jeka94
4 years ago
10

According to the phylogenetic tree, which phylum of organisms are most closely related to chordates?

Biology
1 answer:
nlexa [21]4 years ago
6 0

I believe the answer is echinodermataechinodermata and Chordata have a very similar embryonic development; tirhe first opening (the blastopore) becomes the anus, while in protostomes it becomes the mouth and several similarties in the formation of skeleton.It is predicted that Echinodermata and Chordata evolved from the same ancestor

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Identify the dependent and independent variable in each of the examples below: 1. White mice are fed a treat every time they man
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1. IV: Time the Bell is rang DV: Time it takes to learn the task

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Explanation:

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1. In scenario 1, the TIME THE BELL RINGS is the independent variable because that is what the experimenter controls or has power to change. On the other hand, the dependent variable is the TIME IT TAKES TO LEARN THE TASK because it is the measured variable that responds to the independent variable.

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3. In case 3, the TIME OF RADIATION is the independent variable while the PERCENTAGE OF SUCCESSFUL GERMINATION is the dependent variable.

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3 years ago
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4 years ago
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