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A:
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a. pigment
b. fixed parenchyma cells
c. neoblasts cells
d. neural crest cells
e. chromatophores
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- The light- sensing units of ___________ are called "Ommatidia" and are composed of a series of ____ cells. A. Caenorhabditis elegans; 10 B. Bacillus subtilis; 7 C. Osmia lignaria; 3 D. Drosophila melanogaster; 7An additional notochord is grafted next to the developing neural tube. Answer the following questions. (a) what new cells would you expect to develop in the region of the neural tube closest to the graft? (b) What is the notochord-derived molecule that is responsible for the effect?Explain differences and similarities between the onion cells and the Elodea cells.
- A. An embryo sac (ovule) contains eight haploid nuclei.B. Three nuclei become three synergids, 2 polar nuclei, 3 antipodal nuclei. A.If statement A is wrong and B is correct. B.If both statements are wrong. C.If both statements are correct. D.If statement A is correct and B is wrong.The products of budding are a. two cells of equal size. b. two cells, one of which is smaller than the other. c. many cells of equal size. d. many cells of variable size.Both early plants such as mosses and ferns required water:  A. To reproduce via flagellated sperm. B. Due to a lack of waxy cuticle C. To transport nutrients D. Due to a lack of cell wall
- Parasitic flatworms can avoid their host’s immune response by employing which of the following? a. Diffusion b. Gastrodermal ingestion c. Epidermal shedding d. CopulationSea urchins exhibit a holoblastic cleavage pattern. What factor contribute to this cleavage pattern? a. The amount/distribution of yolk b. Conditional specification of the vegetal layer by large micromeres c. The angle of the mitotic spindle and its time of formation d. Maternal factorsHow is the life cycle of Ascomycetes different from that of humans? A. Haploid cells undergo meiosis. B. Haploid cells undergo mitosis. C. Diploid cells undergo meiosis. D. Diploid cells undergo mitosis.
- Which of the following is not a reason for mitosis? A. Keep cells small B. Replace damaged cells C. Produce new genes and traits D. Growth of organismsWhich type of life cycle has both a haploid and diploid multicellular stage? a. an asexual life cycle b. diploid-dominant c. haploid-dominant d. alternation of generationsWhich of the following is not true for gemmae? *a.They are a small clusters of cells. b.They are lightweight and are blown hundreds of miles -- getting dispersed over a wide area. c.They grow into new plants that are genetically different from of the original plant d. They are easily dislodged by rain, wind, or animals.
