Different parts of plants exhibit remarkable ability to flex without sustaining damage or breaking. Name the tissue that confer flexibility to plants.

Among the listed plant tissues, identify the one in which sieve tubes and companion cells are present.

A tissue P is analogous to stem cells in animals. It is composed of undifferentiated cells which continue to divide and contribute to the growth of the plant. Identify P from the list of options given below:

One can observe the presence of uniformly thickened, rigid walls containing lignin in

Identify the tissue responsible for the radial growth and subsequent increase in width of the stem

Observe the diagram carefully and answer the questions that follows: Select the correct option.

Among the mentioned organs, which one possesses muscles that are primarily regulated by involuntary control mechanisms?

Which organ in human body possesses non-striated and uninucleated muscles?

Consider the following statements. Select the option with correct statements only.

Observe the diagram given alongside carefully and identify the parts labelled as A-D

Consider the following statements.

Assertion (A): Complex tissues are composed of more than one type of cells Reason(R): Xylem, phloem and sclerenchyma are the complex tissues.

Assertion (A): The outer and the side walls of epidermal cells are thicker than the inner wall. Reason (R): Epithelial tissues are tightly packed and form a continuous layer.

Assertion (A): Columnar epithelium facilitates the movement of substances across the epithelial barrier. Reason(R): Absorption and secretion is the function of tall epithelial cells.

Assertion (A): Cork cells are impervious to water and gases. Reason (R): Cork cells have deposition of suberin in their walls

Assertion (A): Cardiac muscles are involuntary muscles. Reason (R): Heart muscle cells are cylindrical, unbranched and multinucleated