牙齿的演化规律是A.牙数由少变多形由复杂变为单一同形 C.牙替换次数由双牙列变为多牙列、单牙列 D.由端生牙变为侧生牙、槽生牙 E.由侧生牙变为端生...

作者: tihaiku 人气: - 评论: 0
问题 牙齿的演化规律是
选项 A.牙数由少变多形由复杂变为单一同形 C.牙替换次数由双牙列变为多牙列、单牙列 D.由端生牙变为侧生牙、槽生牙 E.由侧生牙变为端生牙、槽生牙
答案 D
解析 动物由低等向高等发展过程中,牙齿由端生牙变为侧生牙、槽生牙。

相关内容:牙齿,演化,规律,牙数,少变,次数,双牙列,牙列,单牙列,端生,侧生,槽生

猜你喜欢

发表评论
更多 网友评论0 条评论)
暂无评论
错误啦!

错误信息

  • 消息: [程序异常] : MISCONF Redis is configured to save RDB snapshots, but it's currently unable to persist to disk. Commands that may modify the data set are disabled, because this instance is configured to report errors during writes if RDB snapshotting fails (stop-writes-on-bgsave-error option). Please check the Redis logs for details about the RDB error.
  • 文件: /twcms/kongphp/cache/cache_redis.class.php
  • 位置: 第 85 行
    <?php echo 'KongPHP, Road to Jane.'; ?>