Concentric vascular bundles are always closed. Describe.

Phylum Annelida is the first phylum to represent closed circulation.

Correct Answer - A convex mirror always from virtual image becomes ray diverge after reflection.

Correct Answer - C Friction opposes relative motion.

1. Students must have observed monocot stems.  2. It is because, monocot stem shows scattered vascular bundles.  3. In monocot stem, vascular bundles are closed i.e. without cambium.  4. Thus, secondary growth does...

Concentric vascular bundle:  a. When one vascular tissue is completely encircling the other, it is called as concentric vascular bundle.  b. When phloem is encircled by xylem, it is called as leptocentric...

1. In fern rachis, the number of vascular bundles is less as compared to number of vascular bundles in monocot stem. In monocot stem, vascular bundles are numerous.  2. In fern...

1. Vascular bundle of monocot and dicot root.  2. Vascular bundle of monocot and dicot stem.  3. Vascular bundle of monocot and dicot leaf.

1. Vascular bundles of the root are radial.  2. In radial vascular bundles, complex tissues are situated separately on separate radius as separate bundle. 3. The xylem and phloem bundles are arranged...

Vascular bundles of dicot stem are described as conjoint collateral and open because;  1. In dicot stem, the complex tissue is collectively present as neighbours of each other on the same...

1. Vascular bundle in dicot stem:  Vascular bundles are conjoint, collateral, open, and are arranged in a ring. Each one is composed of xylem, phloem and cambium. Xylem is endarch. A...