Choose odd with respect to collenchyma

1. Living mechanical tissue

2. Intercellular space is absent in angular type

3. Thickening of the wall is due to deposition of lignin

4. Found in hypodermis of dicot stem

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

Select incorrect statement with respect to the anatomy of monocot stem

1. Parenchymatous ground tissue is extended from hypodermis to center

2. Hypodermis is made of thick-walled living mechanical tissue

3. Vascular bundles are conjoint, collateral and closed with endarch xylem

4. Pith is absent

In parenchyma, all cells are isodiametric and

1. Thin-walled

2. Thick-walled

3. Lignified-walled

4. Devoid of intercellular spaces

Tissue which provides mechanical strength and flexibility to young dicot stem is present in

1. Pith

2. Endodermis

3. Hypodermis

4. Cortex

The ground tissue system is constituted by all off these, except

1. Medullary rays

2. Pericycle

3. Mesophyll

4. Xylem

Conjoint, collateral, closed vascular bundles without phloem parenchyma are found in plants which have

1. Differentiated ground tissue in the stem

2. Dedifferentiated pericyclic structure in the mature root

3. Sclerenchymatous hypodermis in stem

4. Developed pith in stem

The tissue belonging to bark but not to periderm is

1. Vascular cambium

2. Secondary phloem

3. Phellem

4. Secondary cortex

Which of the following is correct with respect to lenticels?

a. Phellogen forms parenchymatous cells on the outer side

b. It is a lens-shaped opening

c. Helps in exchange of gases

d. Present mostly in woody trees

1. a & b correct

2. c & d correct

3. b, c, & d correct

4. All are correct