Question

what is meant by intine and exine ?​

Answer 1

Answer:intine and exine are inner and outer layers ofpollen grain respectively,,  

intine is made of cellulose and pectose

exine is made of sporopollenin which is undegradable and sporopollenin will not break under high acidic /high temp

Explanation:

Answer 2

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$\large{\bold{\underline{\underline{ Intine \: Description \: :}}}}$

Intine is the layer of Sporoderm or wall of Pollen Grains.

${\bold{\underline{\underline{ Features\:of\: Intine \: :}}}}$

• Thin and Elastic
• Made up of pectin and cellulose
• During Pollination it extends and form Pollen tube.

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$\large{\bold{\underline{\underline{ Exine \: Description \: :}}}}$

Exine is the outermost layer of sporoderm of Pollen grain.

${\bold{\underline{\underline{ Features\:of\: Exine \: :}}}}$

• Made up of Sporopollenin
• This is resistant to chemical or biological decompose.
• This preserves pollen for long period of time.

Please prefer above attachment for knowing about structure of Exine...

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