Root hairs are similar to mycorrhizae in that both
a. are multicellular.
b. are extensions of root epidermal cells.
c. are symbiotic relationships involving root cells.
d. increase the surface area available for
absorption.
e. fit all of these descriptions.
Answer: d
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Which of the following lead to increased genetic diversity?
a. crossing over b. nondisjunction c. telophase d. metaphase
Annelids possess a(n) ________ skeleton that gains support from internal fluids
a. setae b. cartilaginous c. hydrostatic d. exterior
You have been a carrier of HSV-2 for many years, with sporadic outbreaks perhaps once a year. You are pregnant and about to deliver your baby. What does your doctor suggest, now that you currently have an outbreak of herpes lesions?
A. Give you a high dose of antibiotics B. Delivery by cesarean section C. Put the baby on a high dose of antivirals D. Have an abortion
Do only plants have vacuoles?
A) Yes, only plants cells have vacuoles. B) No, other organisms, such as certain types of fungi and protists, have vacuoles that serve different functions. C) No, other organisms, such as certain types of fungi and protists, have vacuoles that serve the same function as in plant cells.