The middle lamella, which cements neighbouring plant cells together, is composed mainly of
Correct answer: B. pectin
- A. cellulose
- B. pectin
- C. lignin
- D. suberin
Explanation
The middle lamella is a shared pectin-rich layer formed first during cell division, gluing adjacent walls together. Cellulose makes up the wall itself on each side of it, and suberin is the waterproofing of cork, not the cementing layer.
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About Animal and Plant Cell
Animal and plant cells share a plasma membrane, cytoplasm, nucleus, ribosomes, mitochondria and endoplasmic reticulum, but plant cells also have a cellulose cell wall, chloroplasts and a large permanent vacuole. Questions cover organelle structure and function, differences between the two cell types, and how membranes control movement of substances.
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