1. On what basis we classify sclerenchyma into fibres or sclereids?
a) Structure
b) Origin
c) Development
d) All of these
Explanation: All of these
2. Sclereids are present in the pulp of
a) Guava
b) Pear
c) Sapodilla
d) All of these
Explanation: All of these
3. Sclereids are present in
a) Fruit wall of nuts
b) Seed coat of legumes
c) Leaves of tea
d) All of these
Explanation: All of these
4. Which tissue is usually dead and without protoplast?
a) Parenchyma
b) Collenchyma
c) Sclerenchyma
d) All of these
Explanation: Sclerenchyma is usually dead and without protoplast.
5. The collenchyma tissue is characterized by
a) Elongated cells with thickness at the corners.
b) Isodiametric cells with deposits of cellulose and pectin at the corners.
c) Elongated cells with deposits of cellulose and pectin all over the wall.
d) Isodiametric cells with thickness all over the cell wall.
Explanation: The collenchyma tissue is characterized by isodiametric cells with deposits of cellulose and pectin at the corners.
6. In which way collenchyma differs from sclerenchyma?
a) Retaining protoplasm at maturity
b) Having thick walls
c) Having wide lumen
d) Being meristematic
Explanation: Retaining protoplasm at maturity
7. Walls of sclerenchyma are
a) Rigid
b) Lignified
c) Pectinized
d) Suberized
Explanation: Lignified
8. Collenchyma differs from parenchyma in having
a) Living protoplasm
b) Cellulose walls
c) Vacuoles
d) Pectin deposits at corners
Explanation: Pectin deposits at corners
9. Which of the following are simple tissues?
a) Parenchyma, xylem and phloem
b) Parenchyma, collenchyma and sclerenchyma
c) Parenchyma, xylem and collenchymas
d) Parenchyma, xylem and sclerenchyma
Explanation: Parenchyma, collenchyma and sclerenchyma
10. What is the most common type of permanent tissue found in almost all plants?
a) Sclerenchyma
b) Collenchyma
c) Parenchyma
d) Xylem
Explanation: Parenchyma