The strobilus of a spike moss contains:a
an apical meristem.
b. both microsporangia and megasporangia.
c. microsporangia only.
d. megasporangia only.
e. a plant embryo.
B
You might also like to view...
Which of the following best describes the neuroendocrine-to-endocrine pathway of hormone action?
A) A neural organ that produces hormones regulates another gland through the release of hormones into the circulation that travel to the affected gland. B) A neural organ that produces hormones releases its hormones directly into another gland that it regulates. C) A gland releases hormones directly into a neural structure, thus regulating neural functions. D) A gland exhibits negative feedback on the nervous system by releasing hormones into neural tissue both directly and indirectly through the circulation .
Regarding Investigating Life 22.5, how do the young leaves produce the sugary nectar that the ants eat?
A. from the ants B. by photosynthesis C. through their roots D. from their fruits E. by respiration
The sense of smell
A. can respond to very low concentrations of molecules. B. requires a long time before odors can be perceived. C. responds to four basic shapes of molecules. D. fatigues very slowly.
Substances that are recognized by the body as foreign and provoke an immune response are called
A) Antibodies B) Antigens C) Cytokines D) White blood cells