In temperate region plants, the wood with fewer xylary elements and narrow vessels, is termed as:-

1. Spring wood
2. Autumn wood
3. Sap wood
4. Heart wood

Identify the wrong statement in context of heartwood.

(1) Organic compounds are deposited in it

(2) it is highly durable

(3) It conducts water and minerals efficiently

(4) It comprises dead elements with highly lignified walls

Identify the wrong statement in the context of heartwood:

1. It is highly durable

2. It conducts water and minerals efficiently

3. It comprises dead elements with highly lignified walls

4. Organic compounds are deposited in it

Age of a tree can be estimated by:

1. biomass

2. number of annual rings

3. diameter of its heartwood

4. its height and girth

Heartwood differs from sapwood in:

1. presence of rays and fibres

2. absence of vessels and parenchyma

3.  having dead and non-conducting elements

4. being susceptible to pests and pathogens

For a critical study of secondary growth in plants, which one of the following pairs is suitable:

1. Sugarcane and sunflower

2. Teak and pine

3. Deodar and Fern

4. Wheat and maidenhair fern

Which of the statements given below is not true about the formation of Annual Rings in trees?
 

The feature which is common to both heartwood and sapwood is

1. Both are the regions of secondary xylem

2. Both are involved in the conduction of water.

3. Both comprise dead elements with the accumulation of aromatic compounds.

4. Both are located in the central layers of the stem.

The springwood present in an annual ring

1. Is dark colored

2. Has high density than autumn wood

3. Has abundant fibers

4. Has low density than autumn wood

Identify the incorrect match with respect to wood characters given in A, B, C column

                                  A                       B                        C