Plant cell growth is confined to:

A. flowers.
B. meristems.
C. within the cell walls.
D. photosynthetically active tissues.


B

Biology & Microbiology

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Refer to the accompanying figure. The structure labeled as 2 is homologous with the structure labeled as:

a. 1. b. 3. c. 4. d. 5. e. 7.

Biology & Microbiology

Which definition of evolution would have been most foreign to Charles Darwin during his lifetime?

A) change in gene frequency in gene pools B) descent with modification C) the gradual change of a population?s heritable traits over generations D) populations becoming better adapted to their environments over the course of generations E) the appearance of new varieties and new species with the passage of time

Biology & Microbiology

You wanted to test a single fruit fly for the presence of the TOLL protein , so you prick it with a needle coated in fungal spores. The fly dies 2 days later. Which of the following statements is TRUE?

A. The TOLL protein is only found in humans.  B. This is evidence that the TOLL protein is not present.  C. This is evidence that the TOLL protein is present.  D. This is inconclusive evidence. 

Biology & Microbiology

Under which condition will a population experience growth?

A. when N is less than K B. when r equals zero C. when N equals K D. when dN/dt equals zero E. when N equals zero

Biology & Microbiology