The excretory structures of annelids are referred to as
A. metanephridia.
B. flame cells.
C. malpighian tubules.
D. protonephridia.
E. kidneys.
Answer: A
You might also like to view...
A flower’s parts are modified ____ that develop from a receptacle
a. epidermal cells b. asexual organs c. regions of a stem d. leaves e. ovaries
Which of the following is not a part of an egg with a calcium-hardened shell?
A. Placenta B. Amnion C. Chorion D. Allantois E. Yolk sac
To be of value, DNA sequences targeted for analysis for DNA profiling need to be located in coding regions of the genome.
Answer the following statement true (T) or false (F)
The modular nature of the Eve gene's regulatory region means that ______
(a) there are seven regulatory elements and each element is sufficient for driving expression in a single stripe. (b) all the regulatory elements for each stripe use the same transcriptional activators. (c) the E. coli LacZ gene is normally only expressed in a single stripe—unlike Eve, which is expressed in seven stripes. (d) transcription regulators only bind to the stripe 2 regulatory DNA segment in stripe 2.