What term refers to specialized cells that serve as a simple excretory system in flatworms?
a. choanocytes
b. cnidocytes
c. tentacles
d. flame cells
Answer: d. flame cells
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Gibberellins were discovered as a result of:
A. extractions of this hormone from plants B. a fungal disease on rice C. an application of the hormone accidentally D. many years of experiments to isolate it from plants E. discovery of its relationship to auxins
Hepaticophytes lack stomata and tracheids. What would provide evidence to justify their inclusion in the Bryophytes and not the Charophytes?
A. Cellulose in their cell walls B. Genes for ABA signalling C. The use of chlorophyll D. A haplodiplontic lifecycle Clarify Question What is the key concept addressed by the question? What type of thinking is required? Gather Content What do you already know about hepaticophytes? What other information is related to the question? Choose Answer Given what you now know, what information is most likely to produce the correct answer? Reflect on Process Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
Which hormone is responsible for the enlargement of the mammary glands during pregnancy?
a. estrogen b. luteinizing hormone c. oxytocin
d. progesterone e. prolactin
There are altogether ____________________ codons that code for amino acids in the genetic code. Fill in the blank(s) with the appropriate word(s)