有些绿色开花植物的子房内只有一个胚珠（单胚植物），而有些植物的子房内有两个或多个胚珠（多胚植物）。如图为两种不同植物的子房内剖面图，其柱头上各落有同种植物的4个花粉粒。请分析回答：

（1）无论是单胚植物还是多胚植物，它们的个体发育过程都是从       开始的。

（2）如果A、B柱头上的花粉粒都能萌发出花粉管并抵达子房内，则图       所示的子房出现缺粒的可能性较大。

（3）番茄的每个果实里常见有多粒种子，说明番茄的子房类似图       若番茄体细胞中有24条染色体，则胚珠的正常卵细胞中有       条染色体。

（4）剖开成熟的西瓜，有时会看到几粒白籽。这是因为                     。

The purpose of the requirements definition phase is to produce a clear, complete, consistent, and testable (36) of the technical requirements for the software product.

During the requirements definition phase, the requirements definition team uses an interative process to expand a broad statement of the system requirements into a complete and detailed specification of each function that the software must perform and each (37) that it must meet. The starting point is usually a set of high level requirements from the (38) that describe the project or problem.

In either case, the requirements definition team formulates an overall concept for ’the system and then defines (39) showing how the system will be operated, publishes the system and operations concept document and conducts a system concept review (SCR) .

Following the SCR, the team derives (40) requirements for the system from the high level requirements and the system and operations concept using structured or object-oriented analysis. The team specifies the software functions and algorithms needed to satisfy each detailed requirement.

（40）是（）

A.cotailed

B.outlined

C.total

D.complete