Which of the following statements is tru...

Which of the following statements is true?

According to Dalton, atoms are divisible.

Atoms do not take part in a chemical reaction.

The atoms of an element are different from those of other elements.

Atoms can be broken into molecules.

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Which of the following statement is true?

vessels are multicellular and with wide lumen

tracheids are multicellular and with narrow lumen

vessels are unicellular and with narrow lumen

tracheids are unicellular and with wide lumen.