Scientists Investigating a Drug to Cure a Disease in Birds

question 72

Multiple Choice

Scientists investigating a drug to cure a disease in birds conducted experiments.In these experiments,what were the controls?

• A)birds that did not receive the drug being tested
• B)birds that received the drug being tested
• C)rats that were given the drug being tested
• D)birds given another drug that was not being tested

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Definitions:

Cytoplasmic Division

The process, also known as cytokinesis, by which a cell's cytoplasm divides, producing two daughter cells after nuclear division has occurred.

Megaspore

A type of spore produced by some seed plants that develops into a female gametophyte, involved in the reproductive process.

Embryo Sac

The female gametophyte within the ovule of angiosperms, containing the egg cell ready for fertilization.

Tissue Culture Propagation

A technique in plant biology where small pieces of plant tissue are grown in a sterile, nutrient-rich environment to produce new plants.