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What is weed pollen?
Weed pollen is the fine, powdery substance produced by plants in the weed family, such as ragweed, sagebrush, and pigweed. This pollen is released into the air and can trigger allergic reactions in some people, leading to symptoms like sneezing, congestion, and itchy eyes. It is a common allergen during the fall season.
What is the function of sucrose and calcium nitrate in the germinating solution?
Sucrose provides a source of energy for the germinating seeds through respiration, while calcium nitrate supplies calcium and nitrogen for various metabolic processes. These nutrients are essential for promoting growth and development in the germinating plants.
What is the fusion of pollen and ovule called?
The fusion of pollen and ovule is called fertilization. This process involves the union of the sperm cell from the pollen with the egg cell in the ovule, resulting in the formation of a zygote, which eventually develops into a seed.
A seed is formed when an egg is joined by?
a pollen grain
Why is the sticky substance on the top of the stigma important?
The stigma of a flower is sticky in order to aid in the reproduction of the flower. The stickiness allows pollen to adhere to the stigma, a sexual organ. This sticky stigma also prevents unwanted organisms and insects from penetrating the plant.
What of the substances sucrose or water gives better formation of pollen tubes?
Answeri would think 20% sucrose solution
What of the substance sucrose or water causes the formation of pollen tube?
Sucrose acts as a source of energy for the growing pollen tube, providing the necessary fuel for its elongation. Water is crucial for maintaining turgor pressure within the pollen tube, which helps it to push through the pistil tissues during growth. Both substances play essential roles in the formation and elongation of pollen tubes.
Why sucrose cause the formation of pollen tubes?
Sucrose provides energy for the growth and elongation of pollen tubes through respiration. It also serves as a carbon source for cell wall synthesis and maintenance of turgor pressure, contributing to the physical growth of the pollen tube. Additionally, sucrose signaling pathways play a role in regulating gene expression and cellular processes involved in pollen tube growth.
What is the purpose of using sucrose solution when germinating pollen grains?
Using a sucrose solution in germinating pollen grains provides a readily available energy source for the pollen grains as they begin to germinate. This helps to support metabolic processes and allows the pollen grains to grow a pollen tube, which is necessary for fertilization to occur.
What is pollen What can it cause?
Pollen is a powdery substance consisting of microscopic grains. Pollen can cause Allergies!
What is the powdery substance present in the stamen?
Pollen
What is weed pollen?
Weed pollen is the fine, powdery substance produced by plants in the weed family, such as ragweed, sagebrush, and pigweed. This pollen is released into the air and can trigger allergic reactions in some people, leading to symptoms like sneezing, congestion, and itchy eyes. It is a common allergen during the fall season.
What is the source of pollen?
Pollen is a powdery substance produced by plants and can be found on the stamens inside their flowering bodies.
What is another word for pollen?
Another word for pollen is dander. Pollen is a powder substance that is produced by flowers. It can be spread from flower to flower by the wind or insects.
What substance is transferred to cause fertilization in flowering plants?
pollen
What is 1 of the functions of the sugary substance found in the stigma?
One function of the sugary substance found in the stigma is to attract pollen grains. This substance provides nutrition for the pollen grains, encouraging them to land on the stigma and begin the process of fertilization.
What is the function of the in-tine in pollen grain?
the in-tine of the pollen grain helps in the nuclear division and probably in the formation of male gametes also.
