WebIntine of pollen grain is made of. A Callose B Pecto-cellulose C Cellulose D Fat-like sporopollenin Medium Solution Verified by Toppr Correct option is B) The inner wall of the pollen grain is called intine, which is a thin and continuous layer made up of pecto-cellulose that is cellulose and pectin. So, the correct answer is option B. WebApr 13, 2024 · Pollen apertures are also designed to fold as water is lost and serve as the primary elements of harmomegathy (folding of pollen grains due to water loss) since they are more elastic than the remainder of the pollen wall (Volkova et al., 2013; Božič and Siber, 2024). Exine and sporopollenin
Intine of pollen grain is made of. - Toppr
WebOct 10, 2024 · The intine layer is made up of cellulose and pectin materials. The exine is hard and hence protects the pollen grains during adverse conditions. Detailed Answer: … WebName the organic materials exine and intine of an angiosperm pollen grains are made up of. Explain the role of exine. Answer The exine layer is made up of sporopollenin, which is one of the most resistant substances found in nature. The intine layer is made up of cellulose and pectin materials. Previous Question Next Question clicker for college class
Bumblebee flower constancy and pollen diversity over time
WebMar 30, 2024 · It consists of nutrients and thus acts as a source of nuclei. Tube cells are also found here. > Intine: It is the inner layer as clear from the name. It is made up of cellulose (hemicellulose) and Pectin. It is less resistant as compared to excine. > Excine: It is the outer layer of pollen grain. WebIntine is the innermost layer of sporoderm. It is soft (malacodermic), fragile and pliable. It is colourless layer, encircles completely the protoplast and remains tightly attached to the plasma membrane. It is slightly resistant layer. It decomposes when boiled with acids and alkali. It is not well preserved in fossil spores and pollen. WebDec 23, 2024 · The intine layer of pollen is essential for pollen grain maturation and pollen tube germination. Abnormal intine development causes pollen sterility and affects seed … clicker for cats