50 questions · timed · auto-graded
Collenchyma mainly forms:
Explanation:
The collenchyma is found in few layers below the epidermis of plant. It is generally absent in monocot stems and leaves. The cell wall is unevenly thickened.
Father of histology is:
Explanation:
Bichat is also known as “Father of histology”.
Brush-bordered epithelium is found in:
Explanation:
It is composed of a single layer of tall and slender cells. Their nuclei are located at the base. Free surface may have microvilli. It is generaly found in the lining of stomach and intestine and help in secretion and absorption.
Which of the following tissues are composed of mainly dead cells?
Explanation:
Xylem consists of tracheids, vessels, xylem parenchyma and xylem fibres. The cells have thick walls, and many of them are dead cells.
Ligament connects a bone with:
Explanation:
Ligament is a dense connective tissue which connects a bone with bone.
A group of cells alike in form, function and origin are called __________.
Explanation:
A group of cells that are similar in structure and/ or work together to achieve a particular function forms a tissue.
Cylindrical muscle fibres which show alternate light and dark bands are:
Explanation:
Under the microscope, striated muscles show alternate light and dark bands or striations when stained appropriately. As a result, they are also called striated muscles.
Which one of the following tissue gives mechanical support to young dicotyledonous stem?
Explanation:
Collenchyma: It is a simple permanent living mechanical tissue.
Of the following components of phloem is non-living:
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.
Lignified elongated dead cells are:
Explanation:
The cells of the sclerencyma are dead. They are long, elongated, narrow, thick walled and lignified.
Short branched process coming out of a soma of neuron are:
Explanation:
Each neuron has a single long part, called th axon and many short, branched parts called dendrites.
Simple epithelium is a tissue in which cells are:
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.
Permanent tissues differ from meristematic tissue in:
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.
The covering tissue of external and internal surfaces of animals is:
Explanation:
An epithelium is a tissue composed of one or more layer of cells covering the external surface and internal body organs.
Most abundant animal tissue is:
Explanation:
Connective tissues are most abundant and widely distributed in the body of complex animals.
The end of a long bone is connected to another bone by:
Explanation:
Ligament is a dense connective tissue which connects a bone with bone.
Blubber of whale and hump of camel are:
Explanation:
A dipose tissue is fat storing connective tissue which is found mainly beneath the skin. Blubber of whale and hump of camel are adipose tissue which store fat.
Tendon is a structure which connects:
Explanation:
Tendon is a form of dense connective tissue which connects a muscle with a bone.
Husk of coconut is made of:
Explanation:
Husk of a coconut is made up of sclerenchymatous fibres.
Cuboidal tissue takes part in:
Explanation:
It is composed of a single layer of cube-like cells. It is found in kidney tubules and salivary glands. It provides mechanical support to organs and helps in absorption and excretion.
Tendon is a structure which connects _________.
Explanation:
Tendon is a fibrous (dense) connective tissue which connects a muscle with a bone.
The cell division is restricted to:
Explanation:
Permanent tissues formed by meristematic tissues take up a specific role and lose the ability to divide further.
Phloem in the plants perform the function of:
Explanation:
Phloem is a complex tissue in the plant which conducts water from leaves to the other parts of the plant.
Active divisions take place in the cells of:
Explanation:
Active divisions take place in the cells of cambium. Cambium is a meristematic tissue.
Whose living cells provide tensile and mechanical strength?
Explanation:
The cells of this tissue are living, elongated and tightly packed with no inter-cellular space.
Nasal and genital tracts are lined by:
Explanation:
Nasal and genital tracts are lined by pseudostratified epithelium.
The hardness of the bone tissue is due to the phosphates and carbonates of:
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.
The most common type of ground tissue is:
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.
Intercalated disc is present in:
Explanation:
Cardiac muscle fibre contains intercalated discs.
Which type of tissue forms glands?
Explanation:
Glands develop from epithelial tissue. They may be unicellular or multicellular.
Which type of tissue forms the inner lining of a blood vessel?
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.
Pavement epithelium is the name of:
Explanation:
Squamous epithelium is also called pavement epithelium as it is made up of single thin layer of flattened cells.
The nuclei of meristematic cells are:
Explanation:
The meristematic cells are full of cytoplasm and have a big nucleus.
Matrix of connective tissue is produced by:
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.
Smooth muscles occur in:
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.
Areolar connective tissue is found between:
Explanation:
Areolar connective tissue is found between the skin and muscles, around blood vessels and nerves and in the bone marrow. It fills the space inside the organs, supports internal organs and helps in repair of tissues.
Phloem is made of:
Explanation:
Phloem is made up of four types of elements:
Sieve tubes, companion cells, phloem fibres and the phloem parenchyma.
Tissue found in area of regular wear and tear is:
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.
Parenchyma: Simple: Phloem: ___________.
Simple tissues are these:
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.
Collenchyma mainly forms __________.
Explanation:
Collenchyma tissue are found below epidermis in leaves and stem.
Cardiac muscle fibres are:
Explanation:
Cardiac muscle fibres are branched, striated and involuntary. These muscles are exclusively present in the heart.
Trapped dust particles are pushed out of respiratory tract by:
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.
Which one is made of dead cells?
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.
Heart muscles are:
Explanation:
Cardiac muscle fibres are branched, striated and uninucleate. These muscles are involuntary. These muscles are exclusively present in the heart and show rhythmic contraction and relaxation throughout life.
Ligaments and tendons are formed of:
Explanation:
Dense connective tissue is of two types- tenonds and ligaments.
Which of the following statements given below is correct about meristematic tissue?
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.
Which are not true cells in the blood?
Explanation:
Platelets are not true cells in the blood.
Fluid part of blood after removal of corpuscles is ______________.
Explanation:
Blood consists of plasma and blood corpuscles. Plasma is a liquid part of blood which contains 85-90% water.
Plant length is increased by:
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.