Science M.C.Q-[Bio-1M]

3. Both of these

Explanation:

Xylem consists of tracheids, vessels, xylem parenchyma and xylem fibres.

1. Collenchymas.

Explanation:

The cells of this tissue are living, elongated and tightly packed with no inter-cellular space.

3. Collagen.

Explanation:

White fibres of connective tissue are made up of collagen..

1. Epithelial.

Explanation:

Simple squamous epithelial cells are extremely thin and flat and form a delicate lining. Squamous epithelial tissue forms the inner lining of a blood vessel.

2. Epithelial

Explanation:

Glands develop from epithelial tissue. They may be unicellular or multicellular.

2. Collenchyma.

Explanation:

Collenchyma: It is a simple permanent living mechanical tissue.

• It is found in the hypodermal regions of dicot stem, leaf and fruit walls.
• Cell wall is unevenly thickened with cellulose and pectin.
• Provides mechanical support to growing parts of plants such as young stem, petiole of leaf.

4. All the above

Explanation:

Sclerenchyma is a type of simple permanent tissue. The cells of this tissue are dead. Tracheids and vessel are elongated, tubular cells of xylem (complex permanent tissue). These are non-living cells.

3. Xylem

Explanation:

Xylem consists of tracheids, vessels, xylem parenchyma and xylem fibres. The cells have thick walls, and many of them are dead cells.

2. Is made of cells that are capable of cell division.

Explanation:

Meristematic tissue consists of cells which are not differentiated and which are cabable of cell division. It is found on those regions of the plant which grows.

3. Xylem

Explanation:

Parenchyma, collenchyma and sclerenchyma are types of simple tissue whereas xylem is a type of complex tissue.

3. Xylem parenchyma

Explanation:

Xylum parenchyma cells are living. The parenchyma stores food and helps in the sideway conduction of water.

4. Phloem parenchyma.

Explanation:

The phloem parenchyma stores food material and other substances like resins, latex and mucilage. It is absent in monocot stem.

1. Platelets.

Explanation:

Platelets are not true cells in the blood.

1. Ciliated epithelium.

Explanation:

In the respiratory tract, the columnar epithelial tissue also has cilia, which are hair-like projections on the outer surfaces of epithelial cells. These cilia can move, and their movement pushes the mucus forward to clear it. This type of epithelium is thus ciliated columnar epithelium.

4. Collenchyma

Explanation:

Collenchyma is generally absent in monocot stems and leaves.

2. Stratified squamous epithelium.

Explanation:

Skin epithelial cells are arranged in many layers to prevent wear and tear. Since they are arranged in a pattern of layers, the epithelium is called stratified squamous epithelium.

3. Bichat

Explanation:

The term tissue was given by Bichat.

2. Large

Explanation:

The meristematic cells are full of cytoplasm and have a big nucleus.

4. Parenchyma.

Explanation:

The parenchyma is present in soft parts of the plant such as cortex, pith, palisade and some parts of the flower. It is considered as a fundamental or ground tissue.

2. Calcium and magnesium.

Explanation:

The matrix of bone is made up of proteins and is heavily coated with salts of calcium and phosphorous. These minerals make the bone very tough.

1. Ligament.

Explanation:

Ligament is a dense connective tissue which connects a bone with bone.

1. Axon.

Explanation:

Axon is long, branch process of neuron which carries impulses away from cyton.

4. Epithelial

Explanation:

An epithelium is a tissue composed of one or more layer of cells covering the external surface and internal body organs.

4. Cellulose

Explanation:

The cell wall of meristematic cell is thin and made up of cellulose.

1. Meristematic cells.

Explanation:

Permanent tissues formed by meristematic tissues take up a specific role and lose the ability to divide further.

1. Dense connective tissue.

Explanation:

Tendons and ligaments are dense connective tissue.

2. A muscle with bone.

Explanation:

Tendon is a fibrous (dense) connective tissue which connects a muscle with a bone.

2. A muscle with a bone.

Explanation:

Tendon is a form of dense connective tissue which connects a muscle with a bone.

4. All the above.

Explanation:

Smooth muscles are found in alimentary canal and blood vessels. The movement of food in the alimentary canal or the contraction and relaxation of blood vessels are involuntary movement.

2. Parenchyma, collenchymas and sclerenchyma.

Explanation:

Simple tissues are made up of only one type of cells. There are three types of simple tissue occur in plants: Parenchyma, collenchyma and sclerenchyma.

3. Cemented directly to one another to form a single layer.

Explanation:

Epithelial tissue cells are tightly packed and form a continuous sheet. They have only a small amount of cementing material between them and almost no intercellular spaces.

1. Dendrites

Explanation:

Each neuron has a single long part, called th axon and many short, branched parts called dendrites.

2. Division of labour.

Explanation:

In unicellular organisms, a single cell performs all basic functions. For example, in Amoeba. But in multicellular organisms (e.g., human), there are millions of cells. Most of these cells are specialised to carry out a few functions. Each specialised function is taken by a different group of cells or tissue. Thus, multicellular organisms show division of labour.

2. 55%

Explanation:

Blood consists of plasma (55%) and blood corpuscles (45%).

1. Apical meristems.

Explanation:

The meristem which occurs at the growing tips of roots and shoots and increases the length of the stem and root is called apical meristem.

3. Both of these.

Explanation:

Phloem is made up of four types of elements:

Sieve tubes, companion cells, phloem fibres and the phloem parenchyma.

1. Conduction of food.

Explanation:

Phloem is a complex tissue in the plant which conducts water from leaves to the other parts of the plant.

1. Conduction of food.

Explanation:

Pholem is mainly responsible for the conduction or transport of organic food prepared by the plant.

4. All the above.

Explanation:

The tissues formed by meristematic tissues take up a specific role and lose the ability to divide further. As a result, they form a permanent tissue. This process of taking up a permanent shape, size, and a function is called differentiation. Cells of meristematic tissue differentiate to form different types of permanent tissue.

1. Squamous epithelium.

Explanation:

Squamous epithelium is also called pavement epithelium as it is made up of single thin layer of flattened cells.

3. Chlorenchyma

Explanation:

Parenchyma which contains chlorophyll and takes part in photosynthesis, is called chlorenchyma.

3. Complex

2. Simple tissue

Explanation:

Parenchyma is a type of simple permanent tissue. It is present in soft parts of the plant like cortex, pith, palisade and some parts of the flower.

3. Bast fibers.

Explanation:

Phleom is composed of four types of elements i.e., sieve tubes, campanion cells, phloem parenchyma and phloem fibers or best fibers. All type of cells are living except best fibers.

3. Pseudostratified epithelium.

Explanation:

Nasal and genital tracts are lined by pseudostratified epithelium.

3. Connective

Explanation:

Connective tissues are most abundant and widely distributed in the body of complex animals.

4. Both (b) and (c)

Explanation:

The cells of connective tissue are embedded in a matrix. The matrix may be jelly like, fluid, dense or rigid. It is produced by fibroblasts.

2. Chondrin

Explanation:

Matrix of cartilage is made up of chondrin.

3. Sclerenchyma

Explanation:

The cells of the sclerencyma are dead. They are long, elongated, narrow, thick walled and lignified.

4. Connective tissue.

Explanation:

Dense connective tissue is of two types- tenonds and ligaments.