The main parts of a flower are modified versions of which of the following?

A) stems
B) rhizomes
C) internodes
D) leaves


D

Biology & Microbiology

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Prior to ovulation, the primary steroid hormone secreted by the growing follicle is _____

A) luteinizing hormone (LH) B) follicle-stimulating hormone (FSH) C) inhibin D) gonadotropin-releasing hormone (GnRH) E) estradiol

Biology & Microbiology

Why are genes associated with nitrogen fixation not typically used to identify bacteria species? (Select all correct choices.)

A. Their sequences are similar to those of rRNA genes. B. These genes are not typically exchanged between bacteria by horizontal gene transfer. C. These genes are often exchanged between bacteria by horizontal gene transfer. D. Every bacterium contains nitrogen fixation genes.

Biology & Microbiology

Who am I? I belong to the metazoa but not the eumetazoa

a. cnidarians b. flatworms c. sponges d. molluscs e. ctenophores

Biology & Microbiology

Producers in an ecosystem transfer all of their energy to primary-level consumers

Indicate whether the statement is true or false

Biology & Microbiology