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A germ pore is a small pore in the fungal pore's outer wall from which the germ tube then exits at germination. ... Germ pore plays an essential part in the fertilization of plants. It helps in pollen tube formation and releases the male gamete during fertilization.
- What is the function of germ pore Wikipedia?
- What is germ pore in pollen?
- Where is germ pore present?
- Why do you think the exam should be hard What is the function of germ pore?
- What is the sentence of pore?
- What is pore Wikipedia?
- Is germ pore rough?
- Which chemical surrounds the germ pore?
- Is exine absent in germ pore?
- Does Intine have germ pores?
- What are germination pores?
- What is the function of pollen banks?
- What is the biological significance of sporopollenin?
- Why do you think exine is so hard?
- Why are pollen grains important?
What is the function of germ pore Wikipedia?
A germ pore is a small pore in the outer wall of a fungal spore through which the germ tube exits upon germination.
What is germ pore in pollen?
Definition of germ pore
: a pore, pit, or thin area in the outer wall of a spore or pollen grain through which the germ tube or pollen tube makes its exit on germination.
Where is germ pore present?
Germ pores refers to the pores present in the outer wall of the pollen grain which gives rise to the pollen tube which in turns carries the male gamete to the ovary.
Why do you think the exam should be hard What is the function of germ pore?
Class 12 Question
Yes exine should be hard because it protects pollen grain (by which pollen grain develops normally) from severe conditions. It is the outermost layer made up of sporopollenin which protects pollen grain from harsh environmental conditions. Through germ pore pollen tube develops and comes out.
What is the sentence of pore?
1. He was sweating at every pore. 2. She oozes sexuality from every pore.
What is pore Wikipedia?
A pore is an opening in the surface of the skin. A pore leads to a sebaceous gland that lets out oil to lubricate and protect the skin. It also lets some water out, which helps in temperature regulation (homoiothermy).
Is germ pore rough?
B-1: Germ pore is the pore at the end of the pollen tube . C-6: Exine is the outer coating of the pollen grain or pore that is very resistant and rough. D-2: when the nucleus of the sperm fuse with the polar nuclei, the primary endosperm nucleus forms. ... F-4: Egg nucleus is a main part for the fertilization.
Which chemical surrounds the germ pore?
Germ pore is the small pore in the outer wall (exine) of the pollen grains. These are the regions which lack sporopollenin (a substance found in outer layer which is resistant to high temperature and strong acids and alkali).
Is exine absent in germ pore?
The thin or absent exine at the germ pore helps in the identification of some pollen grains.
Does Intine have germ pores?
The pollen grain has two layers - outer exine and inner intine. ... The tube or pollen grain through one of the germ pores or germinal furrows to form a pollen tube. The pollen grain has two layers - outer exine and inner intine. Exine is made up of highly resistant sporopollenin while intine is pectocellulosic.
What are germination pores?
Gene Ontology Term: germination pore
A small pore in the outer wall of a mycelial spore through which the germ tube exits upon germination. It can be apical or eccentric in its location.
What is the function of pollen banks?
Answer Expert Verified
'Pollen Banks' are used to store pollen grains for a short as well as very long period of time in a viable conditions. These pollen grains can be used in various crop breeding programs, biochemical and physiochemical studies.
What is the biological significance of sporopollenin?
Sporopollenin is present in the exine of pollen grains in plants. Its significance with reference to its chemical nature are as follows: It is one of the most resistant organic substance which can withstand high temperature, strong acids and alkali. No enzyme that degrades sporopollenin is so far known.
Why do you think exine is so hard?
Exine is hard and resistant to enzymes because it has a deposition of “Sporopollenin” which is one of the most resistant organic materials. It can withstand high temperature and strong acid and alkalis. It is due to sporopollenin that no enzyme can degrade the pollen grain . This also helps in fossilization.
Why are pollen grains important?
Pollen is essential for sexual reproduction of flowering plants and plants that produce cones. Each pollen grain contains male gametes necessary for fertilisation. The scientific study of living and fossilised pollen grains is known as palynology. ... This process of double fertilisation is unique to flowering plants.
