Formation of Annual rings

Q.

Cambium is most active in

1. winter

2. rainy season

3. snow areas

4. summer

Q.

In an annual ring, the light-coloured part is known as

1. Late wood

2. Heart wood

3. Early wood

4. Sap wood

Q. Assertion (A): Spring wood forms the major part of the annual ring while the autumn ring forms a narrow strip in it.
Reason (R): Duration of spring is longer than autumn.

1. Both A and R are true and R is the correct explanation of A
2. Both A and R are true but R is not the correct explanation of A
3. A is true but R is a false statement
4. Both A and R are false statements

Q.

Dendrochronology means the study of ________

1. height of trees by counting the number of branches.

2. age of trees by counting the annual rings.

3. movement of water through xylem.

4. forest trees and their utilization.

Q.

In which season maximum activity of cambium is seen?

1. Autumn

2. Spring

3. Winter

4. All of these

Q.

In an annual ring, the light coloured part is known as

1. late wood

2. heart wood

3. sap wood

4. early wood

Q. Annual ring involves

1. Heart wood
2. Early wood and late wood
3. Sapwood
4. None of the above

Q.

The cambium activity in dicot stem is higher during spring and summer as compared to autumn and winter.

1. True

2. False