Plant and Animal Tissues Test - 4

The Meristematic tissues are the dividing tissues but when they lose the ability to divide they become permanent tissues. This process of taking up a permanent shape, size and function are called cellular differentiation. 

There are 3 types of permanent tissues: simple permanent tissues, complex permanent tissues, special or secretory tissues. So option B is correct.

A nerve cell typically has several dendrites, each with numerous branches. (The word "dendrite" means "branch".) The diameter of dendrites typically decreases away from the cell body, so that dendrites taper gradually to fine twigs.

The term meristem was first used in 1858 by Carl Wilhelm von Nägeli (1817–1891) in his book Beiträge zur Wissenschaftlichen Botanik ("Contributions to Scientific Botany"). It is derived from the Greek word merizein, meaning to divide, in recognition of its inherent function.

A tissue is an ensemble of similar cells and their extracellular matrix from the same origin that together carry out a specific function. Organs are then formed by the functional grouping together of multiple tissues. The English word is derived from the French tissu, meaning something that is woven, from the verb tisser, "to weave". 

On the basis of developmental stages the tissues in plants can be divided into:-

Meristematic tissues are undifferentiated tissues which are first formed tissues in a plant body.

They consist of actively dividing cells with no specific function.

They help in the primary and secondary growth in plants.

E.g. - apical meristematic tissues.

2) Permanent tissues are differentiated tissues which are formed from the meristematic tissues which have lost the ability to divide.

These tissues perform specific functions in plants.

They help in photosynthesis, storage of food etc.

E.g. - xylem.

So, the correct answer is 'Meristematic and permanent'.

Different types of cells which are different in structure and function. Different types of cells performing one function. The compound tissue is a type of plant tissue that consists of several types of cells. The two types of compound tissue are xylem and phloem. The main function of the compound tissues is conduction. Moreover, the cells of the compound tissue have thick cell walls made up of lignin depositions.

The primary growth in plants results from promeristem. Promeristem is the early embryonic meristem from which other advanced meristems are derived. It is present in a very small area which further divides to form primary meristem.

Periblem is the region which lies beneath the dermatogens and helps in the formation of the cortex and endodermis. Plerome- It is the centrally located meristematic region of stem apex. It is found just below the periblem which helps to form pericycle, vascular bundles, medullary rays and pith.

Histology is known as the study of the microscopic structure of tissue or the branch of biology deals with the study of tissues.

Morphology is the branch of biology that deals with the external structure of the plant like root, shoot, leaves etc.

Taxonomy is the branch of biology that deals with the nomenclature of the organism.

Phyllotaxy is the pattern of arrangement of leaves on the stem or branch.

So, the correct answer is 'Morphology'

The outermost portion of a woody stem or branch is sapwood. It is living. It is lighter than heartwood and forms the water and mineral-conducting wood of plant.