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Questions and Answers
Which chemical modification is a strengthening material deposited in the cell walls of tracheids, vessels, fibers, and sclereids of vascular plants?
Which chemical modification is a strengthening material deposited in the cell walls of tracheids, vessels, fibers, and sclereids of vascular plants?
- Deposition of further hemicellulose
- Deposition of cutin or suberin
- Deposition of further cellulose
- Deposition of further lignin (correct)
Which color reaction is associated with cellulose cell walls?
Which color reaction is associated with cellulose cell walls?
- Iodine shows no color with cellulose and blue with hemicellulose
- Phloroglucinol + conc. HCl stains walls red
- Chlor-zinc-iodine turns blue with cellulose and yellow with pectin substances (correct)
- Chlor-zinc-iodine turns yellow with cellulose and blue with hemicellulose
What is the color change when Phloroglucinol + conc. HCl is used for identification of lignified walls?
What is the color change when Phloroglucinol + conc. HCl is used for identification of lignified walls?
- Walls become yellow
- Walls stained red (correct)
- Walls turn blue
- No color change
Which chemical modification consists of mixtures of highly polymerized fatt?
Which chemical modification consists of mixtures of highly polymerized fatt?
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What chemical modification can undergo various chemical modifications that profoundly change its physical properties?
What chemical modification can undergo various chemical modifications that profoundly change its physical properties?
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