The waxy polymer on the leaves of vascular plants that protects them from pathogens is called

A. lignin.
B. cutin.
C. chitin.
D. cellulose.
E. sporopollenin.


B. cutin.

Biology & Microbiology

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In nature, the predominant form of DNA is supercoiled in a negative direction

Indicate whether the statement is true or false.

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What type of metal associates with hemoglobin?

What will be an ideal response?

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________ is responsible for receiving, interpreting, and producing a response to stimuli.

A. Epithelial tissue B. Muscle tissue C. Connective tissue D. Nervous tissue

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Most of the wood of a tree trunk consists of

A. vascular tissue. B. collenchyma tissue. C. sclerenchyma tissue. D. dermal tissue. E. parenchyma tissue.

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