Which of the following allocates the greatest amount of biomass to photosynthetic tissue and the least amount to supportive tissue?
A) trees
B) shrubs
C) lianas
D) grasses
D
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Two populations that have adapted to similar environmental conditions sometimes have a similar appearance
Indicate whether the statement is true or false
The lakes of northern Minnesota are home to many similar species of damselflies of the genus Enallagma. These species have apparently undergone speciation from ancestral stock since the last glacial retreat about ten thousand years ago
Sequencing which of the following would probably be most useful in sorting out evolutionary relationships among these closely related species? A) conserved regions of nuclear DNA B) mitochondrial DNA C) amino acids in proteins D) ribosomal RNA
The field of biological research in which biologists are attempting to create a living cell in the laboratory, essentially from scratch is known as __________. More modestly, this branch of biology also has a goal of developing novel life forms, beginning with existing organisms, that have a unique value in medicine, industry or in cleaning up the environment.
A) megalomeniacal biology B) industrial biology C) synthetic biology D) production-grade biology E) pharmaceuical biology
Why don't the countries that most need high-protein crops grow them?
A) High-protein crops usually require fertilizers, which may not be affordable to these countries. B) High-protein crops require extensive irrigation, which may not be affordable to these countries. C) High-protein crops are more difficult to process, making the foods they produce too expensive. D) High-protein crops are typically low in most other vital nutrients.