Flowers provide rewards to their pollinators such as:
A. nectar.
B. shelter.
C. colorful petals.
D. pleasant scents.
A
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A defining characteristic of draft sequences is that they have
A. many gaps in regions of highly repetitive DNA. B. less than 1 error in 10,000 nucleotides. C. been found in various proteomes across the eukaryote life forms. D. been produced by alternative splicing. E. several problems, the main one being their contiguous DNA fragments.
Which stage of development involves cell division without cell growth?
A. fertilization B. cleavage C. neurulation D. gastrulation E. organogenesis
The primary organisms that make up the deep scattering layer are:
a. zooplankton and fishes. b. phytoplankton. c. seston. d. nanoplankton. e. marine snow animals.
Identify four external features of a woody twig and briefly explain the function and/or origin of each. What will be an ideal response?