In the life cycle of a plant, the secondary tissues are made by

1. Intercalary meristem and vascular cambium

2. Apical meristem and cork cambium

3. Cork-cambium and vascular cambium

4. Primary meristems and interfascicular cambium

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

Dicot roots do not have cambium in vascular bundles, but secondary growth cambium is served from

1. Pericycle cells only

2. Pericycle and conjunctive tissue

3. Conjunctive tissue only

4. Pericycle and cortex

Which of the following is secondary in origin?

1. Phellogen

2. Interfascicular cambium

3. Wound meristem

4. More than one option is correct

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

                                  A                       B                        C

Select the incorrect statement with respect to late wood

1. It forms a narrow strip in annual rings

2. Has smaller and narrower vessels

3. Darker in colour

4. Fibres are less

Secondary meristems are found in

1. All angiosperms

2. Gymnosperms and all monocots

3.Dictos and gymnosperms

4. All spermatophytes

During the secondary growth in the dicot stem, the cambial ring becomes active and begins to cut off new cells both towards the inner and the outer sides. The cells cut off

1. Towards pith, mature into secondary phloem

2. Towards the periphery, mature into secondary xylem

3. Towards pericycle, mature into secondary xylem as well as secondary phloem

4. Mature into secondary vascular tissues

Which of the above statement(s) is/are correct?

1. a & b are correct

2. b & c are correct

3. Only a is correct

4. Only c is correct

Select the odd one out with respect to tissues

1. A group of cells having a common origin

2. They usually perform a common function

3. Complex tissues are made of more than one type of cells

4. They are not capable of division