0
Want this question answered?
Be notified when an answer is posted
Add your answer:
Earn +20 pts
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?
water
What is the difference between pollen and pollen grain?
Microscopic differences in shape and size.
When a pollen grain lands on stigma it usually sticks because of the presence of?
its either from sugar or water.
What 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.
Which of the substance sucrose or water cause the better formation of pollen tube?
water
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?
water
What is the difference between pollen and pollen grain?
Microscopic differences in shape and size.
When a pollen grain lands on the stigma it usually sticks because of the presence of?
its either from sugar or water.
When a pollen grain lands on stigma it usually sticks because of the presence of?
its either from sugar or water.
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.
What 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 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
How do seeds Reproduction?
it depends on gymnosperm (naked seed) or angiosperm (flowering plant) this is the angiosperm - Another germination event during the life cycle of gymnosperms and flowering plants is the germination of a pollen grain after pollination. Like seeds, pollen grains are severely dehydrated before being released to facilitate their dispersal from one plant to another. They consist of a protective coat containing several cells (up to 8 in gymnosperms, 2-3 in flowering plants). One of these cells is a tube cell. Once the pollen grain lands on the stigma of a receptive flower (or a female cone in gymnosperms), it takes up water and germinates. Pollen germination is facilitated by hydration on the stigma, as well as the structure and physiology of the stigma and style.[1] Pollen can also be induced to germinate in vitro (in a petri dish or test tube).[3][4] During germination, the tube cell elongates into a pollen tube. In the flower, the pollen tube then grows towards the ovule where it discharges the sperm produced in the pollen grain for fertilization. The germinated pollen grain with its two sperm cells is the mature male microgametophyte of these plants.[1
What are chemo tropism and hydro tropism?
Chemotropism : The movement of plant parts in response to chemical stimulus is called chemotropism. example- formation of pollen tube by pollen grains in order to transfer male gamete to the ovary. Hydrotropism : The movement of plant parts in response to water is called hydrotropism. example- movement of roots in search of water.
