T.S of Dicot and Monocot Root

Q.

In the given schematic diagram, pathway of water movement inside the root is shown from soil to xylem. Identify the tissue involved in the steps A-C and choose the correct option accordingly.

1. A – Hypodermis, B – Medullary rays, C – Metaxylem

2. A – Cortex, B – Pericycle, C – Metaxylem

3. A – Pericycle, B – Cortex, C – Metaxylem

4. A – Hypodermis, B – Cortex, C – Vascular tissues.

Q. Arrange the regions in the transverse section of the dicot root from the centre to the periphery.

1. Epiblema, cortex, endodermis, pericycle, pith
2. Pith, pericycle, endodermis, cortex, epiblema
3. Pith, endodermis, pericycle, cortex, epiblema
4. Pith, cortex, pericycle, endodermis, epiblema

Q.

In dicot roots

1. Xylem is always endarch

2. Vascular bundles are scattered and have cambium

3. Xylem and phloem bundles are radially arranged

4. vascular bundles are arranged in the form of a ring.

Q. Find out the wrong statement about angiosperm roots

1. xylem is centripetal in growth in the young roots
2. cuticle is absent in young stages
3. the apex is protected by root cap
4. vascular bundles are collateral

Q. Consider the following statements.
I. In a dicot root, the vascular bundles are collateral and endarch.
II. The innermost layer of cortex in a dicot root is endodermis.
Ill. In a dicot root, the phloem masses are separated from the xylem by parenchymatous cells that are known as the conjunctive tissue.
Choose the correct option.

1. I is correct. but II and III are incorrect
2. II is correct, but I and III are incorrect
3. I is incorrect, but II and III are correct
4. II is incorrect, but I and Ill are correct
5. III is correct, but I and II are incorrect

Q. The tissue present between xylem and phloem of a root is called

1. endodermis
2. conjunctive tissue
3. pith tissue
4. pericycle

Q. You are given a fairly old piece of dicot stem and a dicot root. Which of the following anatomical structures will you use to distinguish between the two?

1. Secondary xylem
2. Secondary phloem
3. Protoxylem
4. Cortical cells

Q.

In dicot roots

1. Xylem is always endarch

2. Vascular bundles are scattered and have cambium.

3. Xylem and phloem bundles are radially arranged.

4. Xylem is always exarch

Q.

The parenchymatous cells between the xylem and the phloem in a dicot root constitute

1. Cambium

2. Medullary rays

3. Epithem tissue

4. Conjunctive tissue

Q. Which of the following is not a characteristics of the anatomy of dicotyledonous roots?

1. Presence of little pith or absent
2. Radial vasular bundles
3. Presence of 15-20 vasuclar bundles
4. Secondary growth

Q.

Vascular cambium in roots arises from

1. Medullary rays

2. Pericycle

3. Endodermis

4. Cambium between xylem and phloem

Q. Initiation of lateral roots and vascular cambium during the secondary growth takes place in

1. Epidermis
2. Pericycle
3. Cortex
4. Endodermis

Q. Four radial vascular bundles are found in

1. Dicot root
2. Monocot root
3. Dicot stem
4. Monocot stem

Q.

What do the following figures A and B represent?

1. A - C.S. of young dicot stem, B - C.S. of young dicot root

2. A - C.S.of monocot stem, B - C.S. of young dicot root

3. A - C.S. of young dicot root, B - C.S. of monocot root

4. A - C.S. of young dicot root, B - C.S. of old dicot root