What is the function of intine in pollen grain?

What is the function of intine in pollen grain?

The intine layer, which is located between the exine of the pollen wall and the cell membrane, is essential for the maturation of the pollen grain and pollen tube germination.

How do you observe pollen grain under microscope?

Observation of pollen grain. Take a slide and put a few drops of water on it. Take any flower like hibiscus, tridax, marigold, etc., tap it over the drop of water. We will see small dot like structures in water. These are pollen grains.

What is intine present?

The intine, or inner layer, consists primarily of cellulose and pectins. The exine, or outer layer, is composed of a highly decay-resistant chemical called sporopollenin.

What is the difference between exine and intine?

The main difference between intine and exine is that intine is the inner layer of a pollen grain whereas exine is the outermost protective layer of the pollen grain.

Does intine form pollen tube?

Pollen tube, made up of cellulose, is an extension of the inner wall of pollen grain (intine. It emerges through one of the germ pore and passes through tissues of stigma and style to reach the ovule. The growing pollen tube is observed by staining with cotton blue.

What are exine and intine parts of?

So, the correct answer is ‘Pollen grain’.

Can you see pollen with a microscope?

Microscope power A compound microscope of 100 times overall magnification is needed to see pollen grains. With a x100 microscope you will just be able to see the grains of pollen.

Is intine thin?

Intine is a thick, non-continuous inner layer of pollen grain. Exine of pollen grains is made up of sporopollenin.

Which is the similarity between exine and intine?

What are the Similarities Between Exine and Intine? Exine and intine are two layers of a pollen grain. Both are hardcovers that protect the pollen grain. They are composed of polymers.

Why boric acid is used in pollen germination?

Addition of 0.01% boric acid to different concentration of sucrose solution prevent the pollen bursting and considerably enhanced pollen tube growth. Pollen grains remain viable at the time of anthesis and the viability lasts 24 hours after anthesis.

Where is exine intine found?

The rough outer layer is called the exine, composed of sporopollenin. The inner wall is known as intine. It is a thin, continuous layer composed of cellulose and pectin. – Pistil is the female reproductive component of the flower.

Are exine and intine parts of seed?

What kind of microscope can see pollen?

Scanning Electron Microscope
pollen looks like a fine yellow or white dust, but when magnified many thousands of times in a Scanning Electron Microscope (SEM) each plant pollen species reveals a unique set of characteristics. They can be distinguished by shape, size and ornamentation.

What magnification is pollen?

Microscope power A compound microscope of 100 times overall magnification is needed to see pollen grains. With a x100 microscope you will just be able to see the grains of pollen. Using x400 you will be able to see some identifying features.

Is intine thick?

Is pollen tube made of intine?

Inside the pollen gain, it has one generative nucleus and one tube nucleus; the generative nucleuses when get divided two male gametes are formed and develop the pollen tube after pollination. Now, the wall of the pollen grain consists of an inner layer that is the intine and an outer layer that is the exine.

What is the role of magnesium sulphate in pollen germination?

They are given on pollen germination as well as pollen tube elongation. ROLE OF POTASSIUM AND MAGNESIUM- It is to accelerate rate of metabolism to earn more energy so that greater osmotic pressure can be achieved , It promote formation of pollen tube.

Can a light microscope see pollen?

Palynologists rely on light microscopy (LM) to identify and interpret the pollen spectrum of a particular sample.

Is intine thin or continuous?

Intine is a thick, non-continuous inner layer of pollen grain.

What is the inner wall of pollen grain?

intine
The inner wall of the pollen grain is called the intine . It is thin and continuous layer made up of cellulose and pectin. So, the correct answer is “Intine.”