Answer
Verified
450.3k+ views
Hint: One of the most resistant biological materials is the one that is very stable and preserved in soils and sediments. These are resistant to chemical degradation both from inorganic and organic chemicals. It is the most inert biological material and is present in the tougher outer wall of plant spores and pollen grains.
Complete answer:
Sporopollenin is the most resistant biological material as it is very stable and chemically inert. Its composition is still elusive and is preserved in soils and sediments. It is present in the tough outer wall of plant spores and helps the cell wall to make resistance against any chemical or enzyme which can break cell spores of the plants. It is also present in pollen grains of the flower and helps to withstand pollen grains against any harsh conditions. Sporopollenin is resistant to enzymes and strong chemicals as it is very stable and even does not decompose in the soil after hundreds of years. Recent studies reveal that it consists of a mixture of biopolymers, containing phenylpropanoids, phenolics, fatty acids of long chains, and traces of carotenoids. Due to this property of sporopollenin, pollen grains are preserved during fossilization.
Hence, the correct option is C. Sporopollenin.
Note: Exine of pollen grains contains sporopollenin which helps the pollen to resist various chemical and microbial decomposition. Therefore, pollen grains are also found in fossils of hundreds of years old with decomposition. Tapetal cells surrounding the pollen grains secrete lipophilic globules and sporopollenin is present in these globules.
Complete answer:
Sporopollenin is the most resistant biological material as it is very stable and chemically inert. Its composition is still elusive and is preserved in soils and sediments. It is present in the tough outer wall of plant spores and helps the cell wall to make resistance against any chemical or enzyme which can break cell spores of the plants. It is also present in pollen grains of the flower and helps to withstand pollen grains against any harsh conditions. Sporopollenin is resistant to enzymes and strong chemicals as it is very stable and even does not decompose in the soil after hundreds of years. Recent studies reveal that it consists of a mixture of biopolymers, containing phenylpropanoids, phenolics, fatty acids of long chains, and traces of carotenoids. Due to this property of sporopollenin, pollen grains are preserved during fossilization.
Hence, the correct option is C. Sporopollenin.
Note: Exine of pollen grains contains sporopollenin which helps the pollen to resist various chemical and microbial decomposition. Therefore, pollen grains are also found in fossils of hundreds of years old with decomposition. Tapetal cells surrounding the pollen grains secrete lipophilic globules and sporopollenin is present in these globules.
Recently Updated Pages
How many sigma and pi bonds are present in HCequiv class 11 chemistry CBSE
Mark and label the given geoinformation on the outline class 11 social science CBSE
When people say No pun intended what does that mea class 8 english CBSE
Name the states which share their boundary with Indias class 9 social science CBSE
Give an account of the Northern Plains of India class 9 social science CBSE
Change the following sentences into negative and interrogative class 10 english CBSE
Trending doubts
Which are the Top 10 Largest Countries of the World?
Difference between Prokaryotic cell and Eukaryotic class 11 biology CBSE
Fill the blanks with the suitable prepositions 1 The class 9 english CBSE
Difference Between Plant Cell and Animal Cell
Give 10 examples for herbs , shrubs , climbers , creepers
Differentiate between homogeneous and heterogeneous class 12 chemistry CBSE
The Equation xxx + 2 is Satisfied when x is Equal to Class 10 Maths
How do you graph the function fx 4x class 9 maths CBSE
Write a letter to the principal requesting him to grant class 10 english CBSE