Reproduction In Flowering Plants

In the Garden: Gardens for pollinators

The word pollinator conjures up images of bees and butterflies, but are there other pollinators? And what exactly do they do?

Pollinators include bees, butterflies, moths, beetles, flies, birds, bats and even reptiles. They are insects and animals that move pollen from one plant to another; more specifically, from the anthers of a male flower to the female flower's reproductive organ or stigma. When a flower receives pollen from the same species of plant, successful fertilization can occur to develop seeds that carry the genetic information for new plants. Since plants can't move, all sorts of adaptations have occurred to move pollen around by wind, water and, of course, by pollinators.

Pollinators only inadvertently play a major role in plant reproduction -- they're simply seeking their own food sources of nectar and pollen. But their work is essential to us, as more than 80 percent of the 1,400 food crops we depend on are pollinated by pollinators, and 90 percent or more of flowering plants need pollinators to survive.

Next time you're at the supermarket, take a look around. That colorful produce aisle full of apples, pumpkins, squash, soybeans and watermelons relies on the activity of pollinators. In the United States alone, the domestic honey bee pollinates more than $10 billion worth of crops.

Why is there increasing concern about pollinators? The numbers of native pollinators and domestic pollinators are declining because of disease, extensive and inappropriate use of pesticides and loss of habitat. Aside from the very tangible and immediate need for food production, pollinators are part of the intricate and biologically diverse natural ecosystem that sustains both life and quality of life.

As citizens, property owners and stewards of the natural resources that sustain us, we can help by creating landscapes that are pollinator-friendly. Do this by minimizing and properly using pesticides and by changing landscape management strategies to create landscapes that provide food, shelter and water for pollinators. Many pollinators travel long distances in the process of migrating (one of the most notable is the monarch butterfly, who travels from Canada to Mexico). It helps if proper food and habitat are widely available.

The simplest way to help protect pollinators is to realize that the chemicals we apply to kill unwanted insects also kill beneficial insects. Instead of reaching for the nearest bottle of pesticide when something appears to be nibbling on plant leaves, consider using Integrated Pest Management strategy and only use pesticides when no other option is available.

Reproduction in Flowering Plants Ppt | forppt.com

File Added : May 7, 2011

Sexual and reproductive structure.Produces sperm . Fertilization egg takes place inside the flower. Pistil {Stigma-top of the pistil, Sticky surface for pollen to stick to, Style – connects the stigma to the ovary, ovary, contains ovules (eggs)}. Stamens (Anther – produces sperm nuclei by meiosis. Sperm nuclei are enclosed by pollen grains. Filament holds the anther up) Pollination, transfer of mature pollen grains from the anther to the stigma (wind, Insects, birds and other animals). Fertilization, the sperm travels through the pollen tube to the ovule. The sperm and egg fuse forming the zygote (fertilized egg), this grows into the plant embryo (cells grow by mitosis). A fruit is a ripened ovary We found this online Biology from google search engine that can be found from this site www.worldofteaching.com. This file has original size and available in English Language. This file Reproduction in Flowering Plants Ppt , can be direct download by follow this link information from original source at this site Download Reproduction in Flowering Plants Ppt

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