Where is the primary meristem located?
A. Dermal tissue.
B. Vascular tissue.
C. Woody stem.
D. Root and stem tips.
E. Stem tip only.
D. Root and stem tips.
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If there are 20 chromatids in a cell, how many centromeres are there?
A) 10 B) 20 C) 30 D) 40 E) 80
Fresh water is much more dilute than the cells of a fish, so the animal constantly takes in water at its gills. How would a freshwater fish osmoregulate?
A. drink seawater and use active transport at the gills to take up salt from the water B. drink seawater and use active transport at the gills to get rid of excess salts C. produce dilute urine and use active transport at the gills to take up salt from the water D. produce dilute urine and use active transport at the gills to get rid of excess salt from the water E. drink saltwater and produce dilute urine to rid itself of excess salt
Chiasma plural = chiasmata. What phase in Meiosis does this occur?
What will be an ideal response?
Which of the following is not information derived from karyotypes?
A. The number of chromosomes in a genome. B. The number and type of sex chromosomes. C. The presence or absence of individual chromosomes. D. Structural abnormalities. E. The pattern of inheritance: recessive, dominant, etc.