T.S. of Monocot Stem

Q.

Which of the following is not included in a bark?

1. Secondary xylem

2. Secondary phloem

3. Periderm

4. Both (A) and (B)

Q.

The sclerenchymatous hypodermis is found in ____________.

1. Dicot root.

2. Monocot root.

3. Dicot stem.

4. Monocot stem.

Q. Read the following statements.
(a) Cambium is completely secondary in origin in dicot roots.
(b) Cork cambium is not formed in dicot roots.
(c) Secondary growth is seen in all parts of a dicot plant.
(d) In dicot roots, the cells of vascular cambium forms secondary xylem towards inner side.
The $\text{correct}$ one(s) is/are

1. (b) and (c)
2. (a) and (c)
3. (d) only
4. (a) and (d)

Q.

Phloem Parenchyma is absent in monocot stem

1. True

2. False

Q.

Lysigenous cavity in xylem tissue contains

1. resins

2. water

3. cell sap

4. protoplasm

Q. The tissue that is absent in monocot stem is

1. parenchyma
2. collenchyma and sclerenchyma
3. collenchyma
4. sclerenchyma

Q.

Look at the diagram below and match the correct labels.

1. A- Dicot Stem, B- Monocot Stem, C- Monocot Root, D- Dicot Root

2. A- Monocot Stem, B- Monocot Root, C- Dicot Stem, D- Dicot Root

3. A- Monocot Root, B- Dicot Root, C- Monocot Stem, D- Dicot Stem

4. A- Monocot Stem, B- Dicot Stem, C- Dicot Root, D- Monocot Root

Q. Which of the following is/are present in dicot stem but absent in monocot stem?

1. Hairs
2. Undifferentiated ground tissue
3. Cortex
4. Pith

Q.

Collenchyma generally forms

1. epidermis

2. inner cortex

3. phloem

4. hypodermis

Q.

What causes some plants to have fleshy herbaceous stem?

1. Because they lack secondary growth

2. Due to too much primary growth

3. Because they have too much leaves

4. They do not produce lignin to harden the stem

Q. Which one of the following is $\text{not}$ included in stele of a dicot stem?

1. Pericycle
2. Pith
3. Endodermis
4. Vascular bundle

Q.

vexillary aestivation is characteristics of the family

Q.

The transverse section of a plant material shows the following anatomical features, (a) the vascular bundles are conjoint, scattered and surrounded by sclerenchymatous bundle sheaths (b) phloem parenchyma is absent. What will you identify it as?

Q.

but why does this lub-dub sound occur?

Q. An open collateral bundle is one in which

1. Xylem and phloem are separated by cambium
2. Xylem and phloem lie side by side
3. Cambium occurs on the outside of bundle
4. Cambium does not occur in the bundle

Q. In monocot stem,

1. vascular bundles are conjoint, collateral and closed
2. secondary growth is absent
3. phloem parenchyma is absent
4. all the above

Q. Which of the following characters is not found in transverse section of monocot stem?

1. Sclerenchyma bundle sheath
2. Lysigenous cavity
3. Sclerenchymatous hypodermis
4. Starch sheath

Q. Submerged hydrophytes have well developed

1. Vascular system
2. Aerenchyma
3. Root system
4. Stomata

Q. The transverse section of a stem of a tree shows the total number of 80 annual rings. Find the number of the rings of spring wood and approximate age of the tree?

Q.