Science True-False [Bio-1M]

False.
Explanation:
The xylem is the vascular tissue responsible for the upward conduction of water and nutrients from the roots. The xylem fibers are non-living sclerenchyma cells as they lose their protoplast at maturity. These cells are found in between the tracheids and xylem vessels of the xylem tissue.
Xylem vessels are very long tube-like structures formed by a row of cells placed end to end. The transverse wails between these cells are partially or completely dissolved to form continous water channels.

True.
Explanation:
It is present as lining of blood vessels (squamous epithelial tissue), lung alveoli and kidney tubules (columnar ciliated epithelial tissue).

True.
Explanation:
Epithelial tissue in the protective layer of cells, which covers the surface of body and lines the internal organs.

False.

Explanation:

It is present as lining of blood vessels (squamous epithelial tissue).

True.

Explanation:

These cells are closely packed together and regulate the movement of materials between body and external environment.

False.

Explanation:

These cells are closely packed together and regulate the movement of materials.

False.
Explanation:
The movement of iris of eye controls involuntary muscle.

True.
Explanation:
Vacuoles are absent in meristematic plant cell.

True.
Explanation:
Totipotency exists in meristematic cells as they have ability of division.

True.
Explanation:
A tendon is a fibrous connective tissue which attaches muscle to bone. Tendons may also attach muscles to structures such as the eyeball. A tendon serves to move the bone or structure.

True.
Explanation:
Epithelial surfaces are plentiful in the human body. The entire body has an epithelial covering called skin.
Stratified squamous epithelium: the cells originate from a layer of cells along a basal lamina and form a multilayered structure.

True.
Explanation:
Sclereids form the gritty part of most of ripe fruits and contribute hardness to the seed.

True.
Explanation:
Parenchyma contains isometric cells.

False.
Explanation:
Intercellular spcaes generally absent in collencymas.

True.
Explanation:
Intercalary meristem is located at the base of inter-node.

True.
Explanation:
Cuboidal epithelium forms the lining of ducts of salivary glands.

False.
Explanation:
Collagen occurs in white fibre.

False.
Explanation:
Cells of collenchyma has irregularly thickened cell walls.

True.
Explanation:
Cork cells are dead, suberized and compacity arranged.

False.
Explanation:
The cells of connective tissue are loosely spaced.

False.
Explanation:
Connective tissue consists of cells, fibers, and ground substance. Connective tissue can be classified as loose or dense. Loose connective tissue has relatively fewer cells and fibers per area than dense connective tissue, in which the cells and fibers are tightly packed.

True.
Explanation:
Cardiac muscles undergo rhythmic contraction and relaxation throughout life.