Which of these exhibits radial symmetry?
A) butterfly
B) spoon
C) snowflake
D) shoe box
C
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At the endodermis is a thin band of hydrophobic material that prevents water passage between cells called the:
A. Casparian strip. B. cortex. C. medulla. D. plasmodesmata. E. parenchyma.
An otherwise normal yeast cell with a diploid number of 32 chromosomes does not undergo
replication prior to M phase. What would be the result after mitosis and cytokinesis, assuming that all processes after S phase occur properly?
What will be an ideal response?Cells viewed in darkfield microscopy appear similar to those stained with the negative stain
Indicate whether the statement is true or false
The respiratory systems of fish and birds are similar in that both________.
A. have similar partial pressures of oxygen in the environmental medium. B. utilize air sacs. C. have unidirectional flow of the environmental medium over the gas exchange surfaces. D. employ countercurrent exchange.