The glands have a number of sacs opening in the same duct.

Epithelial tissue is of two types: simple epithelium and compound epithelium. Simple epithelium is divided as squamous, cuboidal, columnar, ciliated and pseudo stratified.

The characteristic thickenings present on the radial and transverse walls of endodermis are casparian strips.

 The aerial pseudostem of musa is called shaft.

The vascular bundles of a monocot stem are collateral and closed.

 Stipules give protection to axillary bud.

 The seed coat is fused with the pericarp in caryopsis.

 Fusiform initial cells produce vascular rays.

Protostele is the simplest type of stele that comprises the central core of xylem surrounded by phloem, pericycle and endodermis. 

 The correct answer is option 4.

Egg and antipodal cells are haploid in nature.

Epithelia are neither innervated by nerve cells nor pervaded by blood vessels due to lack of intercellular space.

These are the blood cells of defence which form T cells and B cells.

  Skeletal muscle is unable to undergo a sustained contraction.

The cartilages do not have any supply of vessels.

 The hair pointed downwards below the rim prevents the insects from entering the pitcher and from escaping out.

The osteocytes are the main bone forming cells.

 Phloem is the conducting tissue, which is removed in girdling as it forms a part of the bark.

Blood vessels are covered by epithelial tissues.

Roots of varying shapes are present at the nodes of the running stem.