1. The function of cork cambium (phellogen) is to produce
a) Cork and secondary cortex
b) Secondary xylem and secondary phloem
c) Cork
d) Secondary cortex and phloem
Explanation: The function of cork cambium (phellogen) is to produce cork and secondary cortex.
2. Other names of secondary cortex, cork cambium and cork are
a) Phellem, phelloderm and phellogen
b) Phellogen, phellem and phelloderm
c) Phelloderm, phellogen and phellem
d) Phellogen, phelloderm and phellem
Explanation: Phelloderm, phellogen and phellem
3. In dicot roots, the vascular cambium is derived from
a) Epidermis
b) Hypodermis
c) Cortex
d) Pericycle
Explanation: In dicot roots, the vascular cambium is derived from pericycle.
4. Periderm is made up of
a) Phellem
b) Phellogen
c) Phelloderm
d) All of these
Explanation: All of these
5. Cork cells are
a) Dead
b) Photosynthetic
c) Elongated and participates in movement
d) Meristematic
Explanation: Cork cells are dead.
6. Annual rings are distinct in plants growing in
a) Tropical regions
b) Arctic region
c) Grasslands
d) Temperate region
Explanation: Annual rings are distinct in plants growing in temperate region
7. Xylem, which is functional in a dicot tree is
a) Spring wood
b) Sap wood
c) Autumn wood
d) Heart wood
Explanation: Sap wood
8. External protective tissues of plants (of dicot stem are)
a) Cork and pericycle
b) Cortex and epidermis
c) Pericycle and cortex
d) Epidermis and cork
Explanation: Epidermis and cork
9. Cork cambium is a
a) Secondary meristem
b) Apical meristem
c) Intercalary meristem
d) Primary meristem
Explanation: Cork cambium is a Secondary meristem.
10. Cambium, which produces cork is known as
a) Phelloderm
b) Phellogen
c) Periblem
d) Periderm
Explanation: Cambium, which produces cork is known as Phellogen.