In vertebrates, food is moved along the length of the digestive system by __________.
a. peristalsis
b. active transport across cell membranes
c. diffusion and osmosis
d. sequential contraction of bands of skeletal muscles
e. sphincter contraction
Ans: a. peristalsis
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Plantae Terrestrial, multicellular, photosynthetic organisms
Anthophyta Vascular plants with flowers, fruits, and seeds Monocotyledones Monocots. Flowering plants with one seed leaf (cotyledon) and flower parts in threes Commelinales Monocots with reduced flower parts, elongated leaves, and dry 1-seeded fruits Poaceae Grasses with hollow stems; fruit, a grain; and abundant endosperm in seed Zea Tall annual grass with separate female and male flowers mays Only one species in genus -- corn . Based on the accompanying table, one characteristic used at the class level of classification for corn is: a. separate male and female flowers. b. the presence of a single seed leaf. c. flower parts in fours or fives. d. flowering vascular plants. e. tall annual grasses.
Which of the following is not a feauture of memes:
A. death B. genetic recombination C. mutation D. asexual reproduction E. sexual reproduction
Which of the following is the correct order for the four main stages of mitosis?
A. prophase, anaphase, metaphase, telophase B. metaphase, telophase, prophase, anaphase C. prophase, metaphase, anaphase, telophase D. anaphase, prophase, metaphase, telophase
Homeostasis in the body may be defined as ______.
Fill in the blank(s) with the appropriate word(s).