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单选题 Each flower develops from a
学科：默认课程
时间：2025-12-08 08:42:33
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题目1单选题
Flowering plants that complete their life cycles in a single season are calledA. perennialsB. biennialsC. monoseasonalsD. annualsE. accelerophytons
题目2单选题
A plant that requires two growing seasons to complete its life cycle is a(an)A. annualB. perennialC. biennialD. hypogealE. composite
题目3单选题
Most grasses, trees and 'weeds' are flowering plants that produce ______________ flowersA. large, conspicuousB. colorfulC. fragrantD. E. small, inconspicuousF. few
题目4单选题
Dicots are now classified in the class _________________. The common name refers to the production of ___ seed leavesA. Monocotyledonae; oneB. Dicotyledonae; oneC. D. Magnoliopsida; twoE. Liliopsida; twoF. Liliopsida; one
题目5单选题
Which of the following characteristics can be used to identify dicotsA. B. Flower parts in groups of four, five or multiples of four or fiveC. Flower parts in groups of three or multiples of threeD. Presence of pith in the center of the rootE. Long slender leaves with parallel veinsF. Lack of pith in the center of the stem
题目6单选题
The pistil of a flowerA. usually contains at least one ovuleB. is always surrounded by petalsC. produces pollen grainsD. is always composed of a single carpelE. is a part of a peduncle
题目7单选题
Each flower develops from aA. B. primordiumC. peduncleD. calyxE. pedicelF. filament
题目8单选题
The parts of a flower that eventually become seeds areA. ovariesB. stylesC. stigmasD. ovulesE. peduncles
题目9单选题
The pistil is made of three regions: the ____________, the ____________, and the ____________A. stamen; filament; antherB. calyx; sepals; petalsC. ovule; pedicel; peduncleD. rachis; peduncle; petioleE. F. stigma; style; ovary
题目10单选题
The floral parts are attached to an apical portion of the flowering stem called theA. carpelB. receptacleC. stamenD. corollaE. inflorescence
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