Why do all flowers produce pollen, but not all produce nectar? (a) What is gluten? (b) Why do some people want to be gluten-free? What does the diencephalon develop into? What happens when you use more than one immunotherapy drug at the same time?
Bees are very busy.They collect nectar from flowers and make honey.What do bees use to collect nectar? A. feet B. wings C. mouthparts D. antennae 相关知识点: 试题来源: 解析 C。解析:蜜蜂用口器采集花蜜。选项 A 是脚,不能采集花蜜;选项 B 是翅膀,用于飞行;选项 D 是触角,主要用于感知。
Cacti are flowering plants, which means that they rely heavily on pollination of their blooms to reproduce. Like other plants, theyreproduce sexually, depending on the pollen or sperm from their flowers to reach the stigma or female sex organs, whereupon the flower will produce seeds. How do y...
1997. Why do some nectar foragers perch and others hover while probing flowers? Evol. Ecol. 11: 543-555.DREISIG H (1997) Why do some nectar foragers perch and others hover while probing flowers? Evolutionary Ecology 11: 543-555.Dreisig, H. (1997) Why do some nectar foragers perch and ...
百度试题 结果1 题目What do bees collect from flowers? A. Seeds B. Fruits C. Nectar and pollen D. Pesticides 相关知识点: 试题来源: 解析 C。中文解析:文章中提到蜜蜂访问花朵以收集花蜜和花粉。反馈 收藏
Bees feed on the nectar and pollen of flowers. Nectar is a sweet liquid substance that flowers produce specifically to attract bees, birds and other animals. Pollen is a powder that contains the male genetic material of flowering plants. Worker bees (bees whose job is to collect food for the...
This study clarifies the differentiating stage of fertile stamens and staminodes and explores the new structure (nectary) that staminodes formed, and also, it enriched the secretion modes in Ranunculales. Introduction Stamens are important male reproductive organs in angiosperm flowers, whose main ...
In terms of species, angiosperms are the most prolific type; many trees and shrubs, along with all manner of fruits, vegetables, grains, cacti, and wildflowers are considered angiosperms [source: Raven]. These are the flowering plants, and not only do they produce seeds, they also flower ...
Although there are thousands of different types of butterflies, most seem to have the same taste in food: nectar, a sugary fluid that plants produce. Almost all butterflies eat nectar from flowers. However, butterflies are picky about which flowers they choose to visit. Most prefer to get thei...
Adults Flying, predatory Blood/nectar feeding Overall, dragonflies and mosquitoes both have aquatic larval stages and similar egg-laying preferences. However, dragonflies are voracious predators at all stages, while mosquitoes only have predatory behavior during their adult stage. As a result, dragonfly...