The carposporphyte ____
a. is a gametophyte
b. remains in the female gametoypyte
c. contains four sperm cells
d. is unique to green algae
e. grows into the macroscopic algal form.
B
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Root hairs on a root develop _____
A) on the entire root surface B) before the cells elongate C) after the cells elongate D) on the root cap
Hinge joints allow movement in two dimensions (flexion and extension). Which of the following is an example of a hinge joint?
A. the hip joint B. the joints between bones of the skull C. the elbow D. the shoulder joint
Timber wolf populations are partially controlled by wolf behavior. For example, wolves form packs and are territorial. Therefore, only a finite number of wolves will comprise a pack and occupy a relatively large territory. Which of the following best describes this type of population-regulating mechanism?
a. competitive exclusion mechanism b. niche-controlling mechanism c. habitat-controlling mechanism d. extrinsic mechanism e. intrinsic mechanism
The spread of cancer cells from their site of origin to sites distant in the body is called ________.
A. mitosis B. tumor C. metastasis D. growth