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3 years ago

Which of the following statements is correct with respect to the evolutionary relationship between chordates and invertebrates?

Biology

2 answers:

crimeas [40]3 years ago

4 0

The correct answer is: c. chordates are more closely related to echinoderms than to arthropods

The Closest nonchordate relatives to Chordates are Echinodermata. Hemichordates (such as acorn worms) and Echinodermata form the Ambulacraria which is the sister phylum of the Chordates.

Echinoderms and chordates are both deuterostomes, but the differences are that Echinoderm possess bilateral symmetry only as larvae, they have tube feet and their bodies are supported by calcite skeletons.

ch4aika [34]3 years ago

4 0

Answer:

Echinoderms and chordates are found on the same clade.

Explanation:

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Which of the following is NOT true about DNA? it has the instructions to make proteins only human cells have DNA it is found in

Taya2010 [7]

Answer:

The lie is the second- only humans have DNA, all living things have DNA, so two would be your answer!

4 0

3 years ago

How many microliters of original sample are required to produce a final dilution of 10-3 in a total volume of 1,000 mL?

PIT_PIT [208]

Answer:

$10^{9}\ \mu L$

Explanation:

Considering

$Molarity_{1}\times Volume_{1}=Molarity_{2}\times Volume_{2}$

Given that:

$Molarity_{1}=1.0\ M$ (let)

$Volume_{1}=1000\ mL$

$Volume_{2}=?$

$Molarity_{2}=0.001\ M$

So,

$1.0\times 1000=0.001\times Volume_{2}$

Volume = 10⁶ mL

$1\ mL=10^{3}\ \mu L$

So, Volume = $10^{9}\ \mu L$

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3 years ago

All eukaryote cells belong in which group?

Wittaler [7]

Answer:

The correct answer is a. domain Eukarya.

Explanation:

Bacteria archaea and eukarya are considered as the three domains of life. Bacteria and eukarya lack a membrane-bound nucleus and other membrane bound organelle therefore they are considered in prokaryotes and organisms having membrane-bound nucleus comes under domain eukarya.

So the organism which have eukaryotic cell comes under domain eukarya. These organisms can be single cellular or multicellular and their genetic material is packed in a double membranous structure called the nucleus. So the correct answer is a. Eukarya.

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3 years ago

Gasoline can be further refined to produce which of the following fossil fuels? (1 point)

Cerrena [4.2K]

Answer:

crude oil.............

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3 years ago

Define cell and atom

aalyn [17]

cell :- cell is the basic structural and functional unit of life.

Atom :- everything in the universe is made up of atom.