44. In mammals, the melanocytes ultimately arise from (A) the endoderm. (B)the mesoderm. (C)the ectoderm. (D)the notochord. ((E) the neural tube.

44. In mammals, the melanocytes ultimately arise from
(A) the endoderm.
(B)the mesoderm.
(C)the ectoderm.
(D)the notochord. (
(E) the neural tube.

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統計： A(6), B(10), C(17), D(1), E(4) #2345032

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羽徽侯

B1 · 2020/07/20

#4158384

黑色素細胞的胚胎來源是外胚層ectod...

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47. If the number of individual is N, and the carrying capacity is K, and dN/dt as the rate of population growth. Base on the formula, dN/dt = rN(K-N)/K, the rate of population growth less than zero as (A) carrying capacity approaches zero. (B)the age-specific fertility rate approaches zero. (C)the per capita growth rate declines. (D)the population size approaches the carrying capacity. (E) the population size over the carrying capacity.

44. In mammals, the melanocytes ultimately arise from
(A) the endoderm.
(B)the mesoderm.
(C)the ectoderm.
(D)the notochord. (
(E) the neural tube.

詳解 (共 1 筆)

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