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Structural Organization In Animals MCQ Question with Answer

Structural Organization In Animals MCQ with detailed explanation for interview, entrance and competitive exams. Explanation are given for understanding.

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Question No : 29
Select the correct statement regarding Periplaneta americana

There are 16 very long malpighian tubules present at the junctions of midgut and hindgut.
Grinding of food is carried out only by the mouth parts.
Nervous system is located ventrally and consists of segmentally arranged ganglia joined by a pair of longitudinal connectives.
Females bear a pair of short thread like anal styles.
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Question No : 30
Which of the following statement is incorrect regarding cuboidal epithelium ?

It is an epithelial tissue.
It is composed of a single layer of cube-like cells.
They are found in the walls of blood vessels and air sacs of lungs.
Secretion and absorption are the main functions of these tissue.
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Question No : 31
Which of the following statement(s) is/are correct regarding compound epithelium ?

It is made of more than one layer of cells and thus has a limited role in secretion and absorption.
Their main function is to provide protection against chemical and mechanical stresses.
They cover the dry surface of the skin, moist surface of buccal cavity, pharynx, inner lining of ducts of salivary glands and pancreatic ducts.
All of the above
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Question No : 32
Which of the following statement(s) is/are correct about muscle tissue ?

Each muscle is made of many long, cylindrical fibres arranged in parallel arrays.
Muscle fibres contract (shorten) in response to stimulation, then relax (lengthen) and return to their uncontracted state in a coordinated fashion.
Muscles play an active role in all movements of the body.
All of the above
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Question No : 33
Which of the following statements is not correct regarding neural tissue ?

It exerts the greatest control over the bodys responsiveness to changing conditions.
Chondrocytes, the unit of neural system are excitable cells.
Neuroglial cells protect and support neurons.
When a neuron is suitably stimulated, an electrical disturbance is generated.
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Question No : 34
Which of the following statement is correct regarding Female reproductive system of earthworm ?

It consists of two large ovaries, lying laterally in the 6th 7th abdominal segments.
Each ovary is formed of a group of five ovarian tubules or ovarioles, containing a chain of developing ova.
A pair of spermatheca is present in the 5th segment which opens into the genital chamber.
None of the above
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Question No : 35
Which of the following statement(s) regarding cell junctions is/are correct ?

Tight junctions help to stop substances from leaking across a tissue.
Adhering junctions perform cementing to keep neighbouring cells together.
Gap junctions facilitate the cells to communicate with each other by connecting the cytoplasm of adjoining cells, for rapid transfer of ions, small molecules and sometimes big molecules.
All of the above
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