欧豪发现自己家长的橘子长了一块很大的、有毛、黑绿相间的斑，根据所学的内容，你认为正确的是（　　）

kuaishanke2022-10-04 11:39:541条回答

欧豪发现自己家长的橘子长了一块很大的、有毛、黑绿相间的斑，根据所学的内容，你认为正确的是（　　）
A．这些黑绿相间的斑就是一个细菌菌落
B．这些黑绿相间的斑就是一个霉菌菌落
C．“黑绿的毛”是该生物的营养菌丝
D．“黑绿的毛”应该是霉菌直立菌丝和孢子

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258456 共回答了20个问题 | 采纳率100%: 解题思路：细菌菌落特征：菌落较小，形状表面或光滑黏稠，或粗糙干燥，易挑起，多为白色；真菌菌落特征：菌落较大、菌丝细长，菌落疏松，成绒毛状、蜘蛛网状、棉絮状，无固定大小，多有光泽，不易挑，有时还呈现红色、褐色、绿色、黑色、黄色等不同的颜色（孢子的颜色）．
曲霉菌丝有隔膜，为多细胞霉菌．在幼小而活力旺盛时，菌丝体产生大量的分生孢子梗．分生孢子梗顶端膨大成为顶囊，一般呈球形．项囊表面长满一层或两层辐射状小梗（初生小梗与次生小梗）．最上层小梗瓶状，顶端着生成串的球形分生孢子．孢子呈绿、黄、橙、褐、黑等颜色．这些都是菌种鉴定的依据，与营养菌丝相连．
故选：B、D

点评：
本题考点：真菌的形态结构、营养方式和生殖方式的特点．

考点点评：解答此类题目的关键是熟记细菌菌落和真菌菌落的特点．; 1年前

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