Flowers whose throats (nectaries) are too long for hummingbirds to reach their nectar are unlikely to be pollinated (nectar reward isn't available) and therefore the flower is unlikely to reproduce. But if the nectaries are too short, hummingbirds can get their nectar without pollinating them because they don't reach in far enough to touch the pollen-carrying anthers, thus no reproduction for the flower. Flowers evolve with an intermediate length of nectaries. This is an example of what sort of selection?     Group of answer choices Disruptive Stabilizing Directional Sexual

Q: Rocky Mountain juniper (Juniperus scopulorum) and one-seeded juniper (J. monosperma) have…

A: Given: Two types of juniper species - Rocky mountain juniper and one seeded juniper. Need to find…

Q: Which of the following sequence represents the events that take place in the development of a fruit?…

A: The objective of the question is to identify the correct sequence of events that occur during the…

Q: Flowers are specialized plant structures used for sexual reproduction.

A: In this question we have to explain  different parts of angiosperms flower.

Q: 2. Designate each of the following as haploid or diploid. a) Green part of a moss b) Liverwort spem…

A: Hello, thank you for your question. The first and the fourth question is not completely visible, so…

Q: Ferns are a type of terrestrial plant that does not produce seeds, unlike gymnosperms and flowering…

A: The ability to produce seeds has provided significant advantages to gymnosperms and flowering plants…

Q: Which adaptation allows plants to accomplish fertilization without living in a wet habitat?

A: The evolution of seeds allowed plants to decrease their dependency upon water for reproduction.

Q: Darwin observed an orchid from Madagascar that had a nectar spur of about 30 cm in length. He…

A: Charles Darwin was a naturalist and biologist who has widely contributed to the field of…

Q: a) Describe the process of double-fertilization in this fireweed. b) What is the significance of…

A: Fireweed is an angiosperm. It is a flowering plant. The act of fertilization means  the male gametes…

Q: And some plants as stigma becomes receptive to Polin able to facilitate a pollen tube at a different…

A: When stigma and anther mature at different time then this phenomenon is called DICHOGAMY. In this…

Q: In a flowering plant, the male gametophyte is the_______. It is formed in the_______ of a flower.…

A: The flowering plants (also known as angiosperms) are the dominant and most familiar cluster of land…

Q: One of the distinguishing features of angiosperm (flowering plants) is that they have One sperm cell…

A: One of the distinguishing features of angiosperm (flowering plants) is that they have reproductive…

Q: Caneberries (raspberries and blackberries) develop from... 1.single flower with many ovaries* 2.…

A: Raspberry and blackberry belong under the category of aggregate fruits.

Q: 2. (a) Plant in FIGURE 12 can reproduce sexually or asexually. Sporophyte generation is dominant for…

A: Sexual reproduction is the type of reproduction that occurs in the organisms that forms male and and…

Q: In regards to the life cycle of the flowering plants, one place meiosis takes place is; In the fully…

A: Meiosis is a reductional division. It produces haploid gametes

Q: Angiosperms are the most diverse group of plants on the planet, by far. However, using flowers for…

A: Angiosperms are the most diverse group of plants on the planet, by far. However, using flowersfor…

Q: In Arabidopsis, floral organs develop in concentric whorls with four organ types: sepals, petals,…

A: Flower is the reproductive organ of the plant which is responsible for proper reproduction in the…

Q: Plants can reproduce _______A_______ or sexually. An example of the first type is _____B________.…

A: Reproduction in plants are of two types sexual and asexual. Asexual reproduction can be through…

Q: If wind and insects carry pollen from several flower species at the same time, why doesn’t he pollen…

A: The question asks the phenomenon due to which the pollen of one flower species cannot fertilize the…

Q: Pollination is a key aspect of plant reproduction. Compare and contrast wind pollination and animal…

A: The transfer of pollen grain from male anther of a flower to a female stigma is known as…

Q: Use the picture to fill in the blanks in the following sentence. This picture of a fern exhibits the…

A: A fern is a non-flowering vascular plant that reproduces through spores and bears neither flowers…

Q: Many plants can be produced as genetically identical clones by asexual reproduction. Although…

A: The objective of the question is to identify the situation in which genetically identical plants,…

Q: Which is true regarding plant reproduction?     Self-pollination produces offspring genetically…

A: Reproduction in plants takes place when the pollen grains from the anther falls on the stigma…

Q: Chapter 38 is about plant reproduction and yet it focuses mainly on angiosperms. Why? Give three…

A: The Kingdom Metaphyta also called Kingdom Plantae is a polyphyletic group which means that it…

Q: Refer to the figure.  a. What gene mutation(s) will result in the loss of production of the sepals?…

A: A typical flower is composed of four whorls. Flowers are the organs of sexual reproduction in…

Q: Sexual reproduction in plants is considered to be a source of variation creation. How reproduction…

A: During the sexual reproduction, there is a fusion of two different gametes that are genetically…

Q: Plants and animals usually battle each other; describe why and how this occurs. Once…

A: Several complex plant-animal relationships as the plants and animals have evolved together. The…