0
What else can I help you with?
How pollen grain germinate?
Pollen grain germination begins when a compatible pollen grain lands on the stigma of a flower. The stigma secretes moisture, which activates the pollen grain, causing it to absorb water and swell. This triggers the formation of a pollen tube, which grows down the style toward the ovule, facilitating the transfer of sperm cells for fertilization. Successful germination ultimately leads to the fertilization of the ovule, resulting in seed formation.
What of the substances sucrose or water gives better formation of pollen tubes?
Answeri would think 20% sucrose solution
How does a pollen tube form?
A pollen tube forms when a pollen grain lands on the stigma of a flower and germinates. The pollen grain absorbs water and begins to grow a tube that will penetrate the style of the flower and reach the ovary. This is a crucial step in the process of fertilization in plants.
When a pollen grain lands on stigma it usually sticks because of the presence of?
sticky substances such as proteins or lipids on the surface of the stigma, which help trap and adhere the pollen grain. Additionally, specific proteins and receptors on the surface of the pollen grain and stigma may interact to facilitate adhesion.
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.
Which of the substance sucrose or water cause the better formation of pollen tube?
Sucrose is a better stimulant for pollen tube growth compared to water. Sucrose provides the energy and nutrients required for the growth and elongation of pollen tubes, whereas water alone does not provide the necessary nutrients for optimal pollen tube development.
What of the substances sucrose or water gives better formation of pollen tubes?
Answeri would think 20% sucrose solution
How does a pollen tube form?
A pollen tube forms when a pollen grain lands on the stigma of a flower and germinates. The pollen grain absorbs water and begins to grow a tube that will penetrate the style of the flower and reach the ovary. This is a crucial step in the process of fertilization in plants.
When a pollen grain lands on stigma it usually sticks because of the presence of?
sticky substances such as proteins or lipids on the surface of the stigma, which help trap and adhere the pollen grain. Additionally, specific proteins and receptors on the surface of the pollen grain and stigma may interact to facilitate adhesion.
When a pollen grain lands on the stigma it usually sticks because of the presence of?
its either from sugar or water.
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.
What is the difference between pollen and pollen grain?
Pollen refers to the microscopic reproductive structures produced by plants, while pollen grains are the individual units that carry the male gametes. Pollen grains are released from the anthers of flowers and are carried by wind or pollinators to fertilize the ovules of plants.
Has a water resistant covering and gametophyte parts that can produce sperm?
Pollen grainÊ has a water resistant covering and contains a male gametophyte part that can produce sperm. Sperms are carried as part of the pollen grain by gravity.
How does the process of fertilisation take place in flowers?
the stamen[male] part of the plant creates a solution called pollen. a insect will come along and when it gets close some of the pollen rubs on the insect. then while it is looking around the flower some of the pollen rubs off on the pistil [female part of the plant]. pollen then go down into the ovary where the eggs are and then the eggs and the pollen combine to form seeds
How does pollen that fertilizes the egg reach the ovule?
Some of the pollen grains carried by wind,insects,birds or bats may reach a carpel and stick to the ripe stigma.Each pollen grain produces a tiny tube which grows down to the style,into the ovary and towards the ovules or egg cells.when one of the tubes reaches an ovule,it bursts open.A male nucleus from the pollen grain then moves down the pollen tube to join with the nucleus of the female sex cell,the ovule.when the nuclei of the pollen grains and ovules have joined together, the ovules are said to be fertilized.
How does pollen help a seed plant reproduce without water?
Pollen is the male reproductive structure of seed plants. It contains the sperm cells necessary for fertilization. When pollen is transferred from the male reproductive structure to the female reproductive structure (such as by wind or pollinators), it can reach the ovule without the need for water, allowing for fertilization and seed formation to occur.
Function of germ pore?
a pore in the outer wall of a spore or pollen grain through which the germ tube or pollen tube makes its exit on germination stoma, stomate, pore - a minute epidermal pore in a leaf or stem through which gases and water vapor can pass
