a. two or more combined elements
b. the smallest units of an element
c. particles inside a nucleus
d. different forms of an element
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Atoms are best described as 'the smallest units of an element', because each different kind of atom corresponds to a different element. Atoms are themselves composed of protons, neutrons, and electrons.
The phrase that best describes atoms is 'the smallest units of an element' (option b). This is because atoms are the basic pieces that make up all matter, and every different atom corresponds to a different element. An atom itself is composed of sub-atomic particles: protons and neutrons are stacked up into the nucleus at the center of the atom, while electrons orbit the nucleus in various energy levels.
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b. Transport of sugars from the leaves to the shoot system
c. Transport of minerals from the leaves to the reproductive parts
Answer:
The correct answer would be a. Transport of water and minerals from the roots to the shoot system.
The xylem is a type of transporting tissue present in the vascular plants.
It forms the continuous conducting channels which reach all parts of the plants.
The main function of the xylem is to transport water and soluble nutrients unidirectionally to the stem and leaves from roots.
Transpiration pull helps in this passive transport of water from roots to the leaves.
Answer:
Explanation:
D