Depending on the type of pollinators, the pollen grains may be sticky or light. Exine present on the pollen grains as the outermost covering layer is contributed by the tapetum cells. Reaching on the stigma after pollination, the stigmatic cells interact with the material of exine to determine the compatibility of the pollen to allow its germination for fertilization.
The stigma is adapted to trap pollen grains through its sticky surface or specialized structures that can capture and hold the pollen grains. Once trapped, the stigma provides a suitable environment for the pollen grains to germinate and grow pollen tubes, which then transport the male gametes to the ovary for fertilization to occur. This process increases the likelihood of successful pollination and seed production in plants.
On maturity of pollen grains , the anther lobes burst open and the pollen grains released in large amonut are carried by wind to several meters away to settle on feathery stigma as in case of plants of grass family.
compound light microscope - cell theory - electron microscope
A common term for an ordinary microscope is a light microscope, which uses visible light to illuminate and magnify specimens for observation.
The pollen grains of wind pollinated plants are generally smooth and light. These are not sticky to avoid clump-sing. These are produced in large numbers to ensure landing some pollen on the feathery or netted stigmas.
Pollen grains are adapted for plant pollination by being small, light, and easily dispersed by wind, water, or animals. They typically have a hard protective coating to withstand various environments and ensure successful delivery to the female reproductive organs of plants. Additionally, pollen grains often have unique shapes or structures that help them adhere to pollinators or specific female plant structures for successful fertilization.
Depending on the type of pollinators, the pollen grains may be sticky or light. Exine present on the pollen grains as the outermost covering layer is contributed by the tapetum cells. Reaching on the stigma after pollination, the stigmatic cells interact with the material of exine to determine the compatibility of the pollen to allow its germination for fertilization.
I'm unable to see images or arrows directly. However, if you describe the microscope or provide details about its features, I can help you identify its type, such as a light microscope, electron microscope, or fluorescence microscope.
The stigma is adapted to trap pollen grains through its sticky surface or specialized structures that can capture and hold the pollen grains. Once trapped, the stigma provides a suitable environment for the pollen grains to germinate and grow pollen tubes, which then transport the male gametes to the ovary for fertilization to occur. This process increases the likelihood of successful pollination and seed production in plants.
On maturity of pollen grains , the anther lobes burst open and the pollen grains released in large amonut are carried by wind to several meters away to settle on feathery stigma as in case of plants of grass family.
compound light microscope - cell theory - electron microscope
The light microscope use the visible light; the electron microscope use an electrons beam.
Another name for the light microscope is the optical microscope.
A compound microscope
Yes, wind pollinated flower petals are small, because they do not need to be showy to attract insects.
A light microscope