Conjoint

Q.

Identify the vascular bundle types with the given diagram

1. A- Radial, B- Collateral Closed, C- Collateral Open, D- Bicollateral

2. A- Collateral Closed, B- Radial, C- Collateral Open, D- Bicollateral

3. A- Collateral Open, B- Bicollateral, C- Collateral Closed, D- Radial

4. A- Collateral Closed, B- Bicollateral, C- Collateral Open, D- Radial

Q. A collateral vascular bundle is one in which xylem and phloem strands are present on the same radius with phloem towards

1. Outer side of the xylem
2. Inner side of the xylem
3. All around the xylem
4. On both sides of the xylem

Q. Vascular bundles in monocotyledons are considered closed because:

1. Cambium is absent
2. Xylem is surrounded all around by phloem
3. A bundle sheath surrounds each bundle
4. There are no vessels with perforations

Q. A major characteristic of the monocot root is the presence of:

1. Scattered vascular bundles
2. Vasculature without cambium
3. Cambium sandwiched between phloem and xylem along the radius
4. Open vascular bundles

Q. In barley stem vascular bundles are

1. Open and in a ring
2. Closed and radial
3. Open and scattered
4. Closed and scattered

Q. Bicollateral vascular bundle is found in ______.

1. Maize
2. Wheat
3. Cucurbita
4. All of these

Q. Conjoint vascular bundle means

1. Xylem and phloem on different radii.
2. Xylem and phloem on the same radius.
3. Xylem outside and phloem inside.
4. Phloem on both sides of xylem.

Q. Choose the correct statement with reference to the internal structure of leaves.

1. All dicot leaves have an equal number of stomata on both surfaces of their leaves
2. Conjoint vascular bundles are found in leaves
3. Leaves have cambium
4. Upper epidermis is called the abaxial epidermis and lower epidermis is called the adaxial epidermis

Q. Conjoint and closed vascular bundles with no phloem parenchyma are observed in:

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

Q. Vascular bundles in monocotyledons are considered closed because:

1. Xylem is surrounded all around by phloem
2. A bundle sheath surrounds each bundle
3. Cambium is absent
4. There are no vessels with perforations