Formation of Annual rings

Q.

Why are the Young Trees described as Sprinting?

Q.

Differentiate between spring wood and autumn wood

Q. The age of a tree can be determined by counting the in the trunk.

1. cambiums
2. piths
3. annular rings
4. barks

Q. Age of a tree can be estimated by:

1. Its height and girth
2. Number of annual rings
3. Diameter of its heartwood
4. Biomass

Q.

Cambium activity is highest in

1. Autumn

2. Spring

3. Winter

4. Rain

Q. Numerous new leaves and shoots in plants are produced

1. during spring
2. when the old ones fall off
3. when the rainy season sets in
4. when the weather cools down as in winter

Q. The age of a tree can be determined by counting the ________ .

1. annual rings
2. cambiums
3. barks
4. piths

Q. Which of the statements given below is not true about formation of annual rings in trees?

1. Annual rings are not prominent in trees of temperate region
2. Annual ring is a combination of spring wood and autumn wood produced in a year
3. Differential activity of cambium causes light and dark bands of tissue - early and late wood respectively
4. Activity of cambium depends upon variation in climate

Q.

In the given question select the related word from the given alternatives Fan : wings :: Wheel : ? a) Cars b) Air c) Spokes d) Round

Q. Determination of age of a tree by counting annual rings is?

1. Dendrochronology
2. Dendrology
3. Chronology
4. Demeology
5. Countrochronology

Q.

Annual rings are distinct in plants growing in:

1. Temperate regions

2. Tropical regions

3. Grasslands

4. Arctic region

Q. Determination of age of a tree by counting annual rings is known as

1. Dendrochronology
2. Dendrology
3. Gyrochronology
4. Chronology

Q. Which of these bands make an annual ring?
i. Heart wood and sap wood
ii. Autumn woods and spring wood
iii. Early wood and late wood

1. i, ii
2. ii, iii
3. i, iii
4. i, ii and iii

Q. Annual rings are distinct in plants growing in

1. Tropical regions
2. Arctic regions
3. Grass lands
4. Temperate regions

Q.

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

1. early wood

2. late wood

3. sap wood

4. heart wood

Q. Select the correct pair amongst the following

1. Spring wood - light colour, high density
2. Spring wood - dark colour, low density
3. Autumn wood - light colour, high density
4. Autumn wood - dark colour, high density

Q.

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

1. True

2. False

Q.

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

1. Early wood

2. Late wood

3. Heart wood

4. Sap wood

Q. Monocot root has

1. Suberized exodermis, casparian strip, passage cells, cambium
2. Exodermis, endarch, tetrach vascular bundles
3. Suberized exodermis, polyarch xylem, exarch xylem and pith
4. Conjoint, collateral, open, polyarch vascular bundles

Q. Assertion :Cambium has periodic activity maximum in spring season making vessels wide and more in number called as spring or early wood. Reason: The rate of photosynthesis and food assimilation is maximum in spring.

1. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.
2. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion.
3. Assertion is correct but Reason is incorrect.
4. Assertion is incorrect but Reason is correct.

Q.

Cambium is most active in

1. summer

2. winter

3. rainy season

4. snow areas

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.

Annual rings are distinct in plants growing in:

1. Temperate regions

2. Tropical regions

3. Grasslands

4. Arctic region

Q. Which wood was used by Egyptians in 4000 B.C. for making ships?

1. Teak
2. Cedar
3. Sal
4. Shisham

Q.

Cambium is most active in

1. summer

2. winter

3. rainy season

4. snow areas

Q.

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

1. True

2. False

Q. Select the correct pair amongst the following

1. Spring wood - light colour, high density
2. Spring wood - dark colour, low density
3. Autumn wood - light colour, high density
4. Autumn wood - dark colour, high density

Q.

In which season maximum activity of cambium is seen?

1. Winter

2. All of these

3. Autumn

4. Spring

Q.

The other name for spring wood is __

Q. Assertion :Growth rings are also called as annual rings. Reason: Generally growth ring is formed in each year.

1. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
2. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
3. Assertion is correct but Reason is incorrect
4. Both Assertion and Reason are incorrect