Biology MCQs

Page No. 34

Which of the following statement about osteoporosis is incorrect.


aIt results from estrogen deficiency.


bBone eating process takes over bone formation process.


cThere is reduction of bone mass and change in chemical composition of the matrix


dIt is common in old age.



Among the followings which is the most longest supportive cell?


aTracheids


bSclereids


cTrachea


dCollenchyma cells


View Answer Tracheids

Which of the follwing is a childhood disease resulting from nutritive Ca2+ deficiency?


aHypocalcaemia Tatanic spasms


bOsteomalacis


cRickets


dTetany


View Answer Rickets

Secondary cell wall of sclerenchyma cells is impregnated with_________________?


aCellulose


bPeptidoglycan and murein


cLignin


dPectin


View Answer Lignin

Which of the following hormone is predominantly responsible for bone weakening in older women?


aProgesterone


bOestrogen


cParathyroid hormone


dCalcitonin


View Answer Oestrogen

In which of the following joint muscles are arranged in the same plane as that of joint?


aBetween radius and ulna


bBetween ulna and scapula


cBetween humerus and scapula


dBetween femur and tibia.



Higher turgor pressure in a plant cell is maintained by________________?


aLarge number of vacoules in a plant cell


bHigher ionic concentration inside vacuoles resulting from active pumping of ions at their tonoplastic membrane


cHigher osmotic pressure of the cell vacuole


dboth b and c


View Answer both b and c

Fibrous capsule surrounding synovial joints may be thickened at some places to form:


aSynovial membrane


bLigaments


cMuscles


dTendon


View Answer Ligaments

Joint between two parietal bones, which is infact immovable one is an example of_________?


aFibrous joints.


bCartilaginous joints.


cSynovial joints.


dNone of these


View Answer Fibrous joints.

Which of the following plays the major role in providing support to young herbaceous parts of the plant?


aLiving cells of epidermis with higher turgor pressure.


bLiving cells of cortex and pith with higher turgor pressure.


cCollenchyma cells


dAll of these


View Answer All of these

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