Question

QUESTION 1

Which of these statements is NOT correct?

	A.	Endodermis requires energy to move nutrients into vascular cylinder of roots.
	B.	Energy is required to make soil nutrients available to roots.
	C.	Plants spend energy to maintain their symbiotic relationship with soil microorganisms.
	D.	Root cells do not spend energy to transfer nutrients from soil because their movement is powered by transpiration when water enters the roots.
	E.	All of the above statements are correct.

1 points   

QUESTION 2

Conducting phloem cells are dead at maturity to facilitate unobstracted transport of phloem sap.

True

False

1 points   

QUESTION 3

Sugar is transported through sieve tubes that are composed from cells called sieve elements. Sieve elements (within the same sieve tube) share their cytoplasm.

True

False

1 points   

QUESTION 4

Which of the following statement about sugar transport is NOT correct?

	A.	Sugar is loaded into phloem cells at the source by active transporters.
	B.	Water flows into phloem from xylem passively by osmosis.
	C.	At sinks, sugar is unloaded and water leaves by osmosis, increasing the turgor pressure of phloem cells.
	D.	None of the above (i.e., All of the above statements are correct.)

0 points   

QUESTION 5

Portion of carbohydrates transported by phloem to roots spills into the rhizosphere to support the growth of microorganisms.

True

False

1 points   

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Help please. Thanks.

Which of these is NOT correct? Which of the following about sugar transport is NOT correct?

Answer 1

1. D is not correct as root cells take the nutrients in form of active transport and not osmosis

2. True

3. False

4. D, i.e. All of the above statements are correct.

5. False