Plant reproduction

reproductive structures of the plants and to understand its importance in the survival of plant species. Introduction: Angiosperms are the dominant form of plant life in most terrestrial ecosystems, comprising about 90 percent of all plant species. Most crop and ornamental plants are angiosperms. Their success results, in part, from two innovative structures: the flower and the fruit. Flowers are derived evolutionarily from modified leaves. The main parts of a flower are the sepals and petals, which protect the reproductive parts: the stamens and the carpels. The stamens produce the male gametes, which are pollen grains. The carpels contain the female gametes, which are the eggs inside ovaries. The walls of the ovary…

Introduction Plant reproduction is a fascinating part of biology. Plants, specifically angiosperms, have unique ways of reproducing. Angiosperms use pollen vectors such as insects, mammals, birds, wind, and even water to deliver their pollen grains to stigmas. The plant of study for this experiment was Mimulus guttatus, also known as the monkeyflower. This plant produces yellow flowers that are bilaterally symmetrical and have five petals. Interestingly, their petals are fused together and…

majority of the article delves into the help and hindrance of men. From Ridley’s perspective, males are useless as he further supports his claim “quote”. Key principles as stated in the article include man’s drive to execute violent crimes, poor pedigree, irrelevant reproduction value, and desire to fulfill an alpha role which promotes the previous assertions. Therefore, women exude superior qualities of the human race compared to men. Ridley argues why he believes males…

Photosynthesis and sexual reproduction are the two main turning points in the history of life, because the ability to process energy from sunlight, random variation and non-random selection allowed for evolutionary growth and the survival of life. Photosynthesis, an important process of energy transformation is crucial in the development of metabolic microorganisms, as well as the evolutionary changes from primitive to more complex life. Sexual reproduction displays a significant evolutionary…

(C-ferns). These ferns were used because of their exclusive properties in development and in the plant life cycle. In these plants, the haploid and diploid stages exist independently, making it easier to study them without influencing the cell life cycle. The haploid stage is the gametophyte stage and the diploid is the sporophyte stage. The second exclusive property that these plants possess is the fact that the spores develop into gametophytes and then into young sporophytes in 2-3 weeks,…

Ferns are a kind of seedless vascular plant that develop haploid spores in order to reproduce. In a typical fern life cycle, the parent fern will produce haploid spores inside of multicellular structures called sporangia, which are found on the underside of the leaves of a mature fern plant in groups or clusters known as sori (Cordle et. al. 2007). Once the spores are produced they will disperse and will eventually undergo mitosis under favorable conditions in order to produce small gametophytes…

and male animal. The reproduction of the cane toad involves fertilization of the eggs externally more specifically in water. Mating beginning with male signaling the female by croaking to indicate that he is close to a water source and is available to mate (Jeffrey,2007, pg 257). The male cane toad would release his sperm in the water and the sperm would swim to where the female has laid her eggs in the water (Jeffrey,2007, pg 257). This may be advantage because it allows the cane toad not…

Reproduction. The underlying goal for every single organism on earth. All creatures, large and small, have their own way of producing offspring. Many bacteria and plants produce asexually, which means they do not require a sexual partner in order to reproduce. For many other creatures such as reptiles, amphibians, mammals, and many other creatures, A sexual partner is required. Each type of organism has there own way to attract mates. Birds like turkeys fane out their tails to impress…

Amianthium muscaetoxicum, commonly known as fly poison, is a perennial plant found in throughout the Eastern United States. Other common names include crow poison and stagger grass; the name fly poison arose from the translation of the Latin name A. muscaetoxicum, muscae meaning flies and toxicum meaning poison. In the past, the Cherokee would use the plant’s poison to kill crows, hence its common name crow poison, while early settlers would mix the crushed up bulb with honey to kill flies (Fly…

beetle that lays eggs on the surface of beans, the larvae hatch out of the eggs and immediately burrow into the bean to devour all its nutrients and mature into an adult. The study of the male’s reproductive success when given access to water versus no access could lead scientists down a path of slowing the growth of the bean beetle population. The study was performed in lab 201 September 16th, groups separated a dish of watered males with un-watered females and a group of un-watered males and…