Who concluded, based on his studies on plant tissues, that the presence of cell wall is a unique character of plant cells ?
| 1. | Mathias Schleiden | 2. | Theodor Schwann |
| 3. | Rudolph Virchow | 4. | Robert Hooke |
Algae have cell wall made up of
1. cellulose, galactans and mannans
2. hemicellulose, pectins and proteins
3. pectins, cellulose and proteins
4. cellulose, hemicellulose and pectins
A protoplast is a cell
| 1. | without plasma membrane |
| 2. | without nucleus |
| 3. | undergoing division |
| 4. | without cell wall |
Which one of the following structures between two adjacent cells is an effective transport
pathway?
| 1. | Plasmodesmata | 2. | Plastoquinones |
| 3. | Endoplasmic rcticulum | 4. | Plasmalemma |
Middle lamella is mainly composed of
1. hemicellulose
2. muramic acid
3. calcium pectate
4. phosphoglycerides
Plasmodesmata are
| 1. | lignified cemented layers between cells |
| 2. | locomotory structures |
| 3. | membranes connecting the nucleus with plasmalemma |
| 4. | connections between adjacent cells |
Primary cell wall consists of a loose network of cellulose microfibrils impregnated with a matrix of
| 1. | glycoprotein and flavoprotein |
| 2. | hemicellulose and flavoprotein |
| 3. | hemicellulose and pectin |
| 4. | flavoprotein and pectin. |
Plasmodesmata connections help in
| 1. | cytoplasmic streaming |
| 2. | synchronous mitotic divisions |
| 3. | locomotion of unicellular organism |
| 4. | movement of substances between cells. |
The property of semipermeability belongs to
1. cell wall
2. plasma membrane
3. mitochondria only
4. None of the above
Which of the following is not true about cell wall
1. protects cell from mechanical damage
2. permeable to water
3. It’s a living structure
4. absent in animals
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