Which of the following statements regarding the infection of root hairs by Rhizobium species is incorrect?
A. Nodules begin to form in the roots as both plant and bacterial partners differentiate.
B. Attachment of Rhizobium cells to plant root hair cells induce curling of the root hair.
C. The presence of Rhizobium triggers the formation of syncytial cells.
D. This is a mutualistic relationship between plant and bacteria.
Answer: C
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Growth of a parasitic organism in or on the host is referred to as
A. colonization. B. infection. C. pathogenism. D. mutualism.
Chemosynthetic organisms use the energy from ____ to produce organic molecules
a. the sun b. chemical reactions c. the water d. other organisms. e. glucose
Our closest-living relatives on the evolutionary tree are
A. bonobos and common chimpanzees. B. Homo erectus. C. orangutans and gibbons. D. gorillas. E. Homo neanderthalensis.
Which of the following cell types would not be found in connective tissue?
a. macrophages b. red blood cells c. chondrocytes d. pseudostratified cells e. adipose cells