题干

根据所学知识,回答下列问题

Ⅰ、如图表示被子植物花粉的发育过程,据图完成下列各题.

(1)⑦所指的结构是____ (填“花粉管细胞核”或“生殖细胞核”);它和⑧的基因型是否相同?____ 

(2)在进行月季花药组织培养时,选择____ 期的花药接种,培养成功率最高.确定花粉发育时期最常用的方法有____ 法.对于某些不易着色的花粉细胞核,需要使用____ 法将花粉细胞核染成____ 色.

Ⅱ、从橘皮中提取的橘皮精油有很高的经济价值,一般提取橘皮精油的方法是____ 法,新鲜橘皮要用____ 浸泡处理,以破坏细胞结构、分解果胶、防止橘皮滑脱,从而提高出油率.

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答案(点此获取答案解析)

花粉管细胞核,相同,单核(靠边),醋酸洋红液,焙花青﹣铬矾法,蓝黑色,压榨法,石灰水

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    Welcome to Orlando! It has a host of attractions and activities. Ready to join the party and plan a visit to O-Town? Just print out our list that suits your style.

    Universal Orlando's Islands of Adventure

    The addition of The Wizarding World of Harry Potter was among the list of must-visits for theme park enthusiasts. Each of the park's “islands” — Toon Lagoon, Jurassic Park, and The Lost Continent — has unique appeal in the form of rides and interactive attractions. (407-363-8000)

    Gatorland

    It bills itself as “Orlando's best half-day attraction”, for in a city people are limited by their time and money. Catch Gatorland's animals and handler(驯化) shows in the afternoon. There's a nighttime run as well, including the Gator Night Shine and various activities. Gatorland ranks as a comparative theme-park bargain. (407-855-5496)

    Aquatica

    One of the city's most unique water parks, Aquatica is a fantastical world of twisting, turning rides and sparkling white sand beaches. And if you enjoy a side of terror with your water-park fun, be sure to check out Ihu's Breakaway Falls. This towering slide is an eight-story mind-bender of a plummet(垂直落下) that is not for the weak heart. The less exciting will still find plenty of fun splashing from one giant wave pool to another or drifting down the lazy river through a world of unusual fish. You can also watch the black-and-white Commerson's dolphins underwater. (407-351-3600)

    Warbird Adventures

    Few attractions are more hands-on historic than Warbird Adventures, which offers thrill-seekers the opportunity to fly like the hero aces of World War II in the North American T-6 Texan. Flights range from 15 minutes to an hour. A visit to the nearby Kissimmee Air Museum is a wonderful way to round out the experience. (407-870-7366)