BIOLOGICAL CLASSIFICATION
KINGDOM PLANTAE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The Gymnosperm has an incomplete vascular system. This means..
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The phloem does not have tracheid
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The xylem does not have sieve tube
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The phloem does not have sieve plate
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The phloem does not have companion cell
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Explanation:
Detailed explanation-1: -Final answer: Phloem in gymnosperms lack both sieve tubes and companion cells.
Detailed explanation-2: -Companion cells – transport of substances in the phloem requires energy. One or more companion cells attached to each sieve tube provide this energy. A sieve tube is completely dependent on its companion cell(s).
Detailed explanation-3: -Companion cells are the cells found in angiosperms with abundant plasma and nucleus. Complete answer: In Gymnosperms, the phloem lacks both the sieve tube and the corresponding cells. Instead they contain sieve cells for food material conduction.
Detailed explanation-4: -Final answer: Phloem in gymnosperms lacks both sieve tubes and companion cells.
There is 1 question to complete.