The arrows in the above figure point to

a. stomata.
b. companion cells.
c. guard cells.
d. perforated end plates of sieve tubes.
e. none of these.


Answer: d

Biology & Microbiology

You might also like to view...

The genes discovered to date account for only about 5-10% of the total variation in adult height

a. True b. False Indicate whether the statement is true or false

Biology & Microbiology

The phenotype determines the genotype

Indicate whether the statement is true or false

Biology & Microbiology

A missense mutation causes premature chain (protein) termination

Indicate whether the statement is true or false

Biology & Microbiology

Which of these organisms helped biologists determine the contents of phloem?

A) Aphids B) Ants C) Termites D) Grasshoppers E) Leafhoppers

Biology & Microbiology