Olympiad Test: Tissues- 1 - Class 9 MCQ

Tissue is a cellular organizational level between cells and a complete organ. 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. Plant tissues can be grouped into plant tissue systems each performing specialized functions. A plant tissue system is defined as a functional unit, connecting all organs of a plant. Plant tissue system is also grouped into various tissues based on their functions.

So, the correct answer is 'Tissue'.

Tissue is a group of similar cells along with intercellular substances, which are specialized to perform a specific function. Each tissue performs one or more function of body. Thus, the body of multicellular organisms exhibits division of labour and contributes to survival of the body as whole.

Chlorenchyma cells are actually parenchyma cells, but they contain chloroplasts, e.g., the parenchyma cells of leaves and stems. The mesophyll cells of leaves can thus be regarded as chlorenchyma.

The chlorenchyma is the main photosynthetic cells of the plant and manufacture carbohydrates during photosynthesis.

Sclereids are similar to sclerenchyma cells but these are reduced or diminished form of sclerenchyma cells. They make the appearance hard and husky. So, the grit of pear has been formed by sclereids

Among these Connective Tissue are most abundant in our body. Connective tissue is found in between other tissues everywhere in the body, including the nervous system.

Most neurons have a cell body, an axon, and dendrites. The cell body contains the nucleus and cytoplasm. The axon extends from the cell body and often gives rise to many smaller branches before ending at nerve terminals. Dendrites extend from the neuron cell body and receive messages from other neurons.

Monocytes are the largest type of WBCs while lymphocytes are smallest.

Tendon is a fibrous connective tissue that joins bones to muscles. Tendons are capable of withstanding high amounts of tension.

Ciliated columnar epithelium moves mucus and other substances via cilia and is found in the upper respiratory tract, the fallopian tubes, the uterus, and the central part of the spinal cord.

The epithelial tissues are the cells which are present on the body surfaces and line the cavities of the body. These cells are present in animals. Some of the cells of this epithelial layer are modified to form the cells which can secrete certain molecules and are known as the glandular cells. These glands are responsible for the secretion of hormones, proteins, enzymes, etc.