Describe the modifications seen in birds for flight. Include modifications in as many body systems as possible. What will be an ideal response?
Concepts to Consider: Birds are light, and many body systems show reductions to reduce
weight; their bones may be hollow; their respiratory system is particularly efficient to meet
the energetic demands of flight; uric acid is excreted often; their senses are well developed,
which allows precise flight; many migrate great distances to facilitate reproduction in optimal
habitats.
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Carbon dioxide enters the inner spaces of the leaf through the _____
A) cuticle B) epidermal trichomes C) stoma D) phloem E) walls of guard cells
What is the vacuole
What will be an ideal response?
A phylogenetic tree is constructed for 5 species using DNA sequences. Which species is the closest relative of Species 1?
A. Species 2: AGTCG B. Species 3: TTTTG C. Species 4: CGCTG D. Species 5: CATAG
Genetic recombination involves the use of ____ enzymes to cut out segments of DNA.
A. restriction endonuclease B. snurp C. ligase D. DNA polymerase