Question

Cambium is absent in all except

1) Vascular bundle of dicot leaf

2) Vascular bundle of monocot leaf 3) Vascular cylinder of dicot root

4) Vascular bundle of dicot stem​

Answer 1

Answer:

Pteridophytes have no cambium, and they lack cork and secondary vascular tissues. Hence the correct option is A.

Answer 2

Answer:

1. Vascular bundles in a dicot leaf are conjoint, collateral, and closed. They are present within the mesophyll tissue which represents the midrib and veins of a leaf. ... The presence of no cambium between the xylem and phloem describes the vascular bundle as closed.

2. Monocot and dicot roots contain multiple tissue layers that water moves through before reaching the root's central vascular cylinder

Explanation:

4 In the dicot stem, the vascular bundles are conjoint, collateral and open. In the case of monocot stems, the vascular bundles are arranged in the bundles of xylem and phloem and are dispersed throughout the ground tissue. The vascular bundle in the monocot stem is conjoint, bicollateral and open