All of the following describe characteristics of sclerenchyma cells, except which?

A. Their secondary walls may be impregnated with lignin.
B. Their function is primarily to transport oxygen and carbon dioxide throughout the leaf.
C. They have thick, tough secondary walls.
D. They lack living protoplasts when mature.
E. They form fibers and sclereids.


Answer: B

Biology & Microbiology

You might also like to view...

Escherichia coli living in the human colon can be considered to be a(n):

A) endosymbiont. B) opportunist. C) symbiont in a mutualistic relationship. D) all of the above

Biology & Microbiology

The amount of turgor that is enough to stop

osmosis is called

a. the wilting point. b. osmotic pressure. c. hypotonicity. d. expansion pressure. e. hypertonicity

Biology & Microbiology

Light travels from space to earth

a. in circle lines. b. in straight lines. c. in waves. d. in circle and straight lines. e. in circle lines and in waves

Biology & Microbiology

Which physician realized that doctors were causing maternal deaths by failing to wash their hands while assisting during childbirth?

A) Girolamo Fracastoro B) Joseph Lister C) Louis Pasteur D) Ignaz Semmelweis

Biology & Microbiology