The calyx is composed of

a. petals.
b. sepals.
c. stigmas.
d. ovules.
e. anthers


B

Biology & Microbiology

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Four of the five structures listed below are parts of

the central nervous system. Select the exception. a. spinal cord b. medulla c. ganglia d. cerebellum e. cerebrum

Biology & Microbiology

Habitats with the most species in greatest danger of

extinction are called a. ecoregions. b. indicator species. c. riparian zones. d. hot spots. e. conservation islands.

Biology & Microbiology

Hereditary material in organisms is

a. DNA b. ATP c. RNA d. chromosomes

Biology & Microbiology

  Figure 8.3 Answer the following questions about Griffith's experiments involving Streptococcus pneumoniae. ? If an injection to the mouse contains live R strain and heat-killed S strain Streptococcus pneumonia, ____.

A. the mouse will live B. the mouse will became fatally ill and live S strain bacteria will be detected in its blood C. the mouse's blood will contain live pathogenic R strain bacteria D. the dead S strain bacteria will transform to live R strain bacteria E. DNA from the live R strain bacteria will revive the dead S strain bacteria

Biology & Microbiology