(i) Suberin
(ii) Cutin
(iii) Wax
(a) i and ii
(b) i and iii
(c) ii and iii
(d) i, ii and iii
Answer-(d) i, ii and iii
Category: Biology Second Paper
The layer that forms above the primary wall is called- [HSC & Admission]
(a) Median membrane
(b) Secondary wall
(c) Pit pair
(d) Peat
Answer (b) Secondary wall
The primary wall contains any chemical substance- [HSC & Admission]
(i) Glycoprotein
(ii) Lipids
(iii) Pectin
(a) i and ii
(b) i and iii
(c) ii and iii
(d) i, ii and iii
Answer (b) i and iii
The first layer formed above the middle screen is called- [HSC & Admission]
(a) Primary wall
(b) Secondary wall
(c) Biomembrane
(d) Pit membrane
Ans-(a) Primary wall
Which of the following is formed by the middle screen? [HSC & Admission]
(a) Polysaccharides
(b) Protein
(c) Phragmosma
(d) Lipids
Answer-(c) Phragmosome
Which stage of cell division is the middle membrane formed? [HSC & Admission]
(a) Prophase
(b) Metaphase
(c) Anaphase
(d) Telophase
Answer-(d) Telophase
What chemicals are in the middle screen? [HSC & Admission]
(a) Lignin
(b) Pectin
(c) Suberin
(d) Polypeptidase
Answer (b) Pectin
Which of the following is more abundant in the middle layer? [HSC & Admission]
(a) Pectic acid
(b) Muramic acid
(c) Suberin
(d) Lignin
Answer-(a) Pectic acid
The cell that is in the pores of the pit membrane is called- [HSC & Admission]
(a) Mesosomes
(b) Plasmodesmata
(c) Peat
(d) Tunnel
Answer-(b) Plasmodesmata
The middle screen of pit pair is called- [HSC & Admission]
(a) Primary screen
(b) Secondary screen
(c) Middle screen
(d) Pit membrane
Ans-(d) Pit membrane