Biology MCQs

Page No. 34

Which of the following statement about osteoporosis is incorrect.


aIt results from estrogen deficiency.

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bBone eating process takes over bone formation process.

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

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dIt is common in old age.

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Among the followings which is the most longest supportive cell?


aTracheids

✓


bSclereids

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cTrachea

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dCollenchyma cells

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View Answer Tracheids

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


aHypocalcaemia Tatanic spasms

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bOsteomalacis

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cRickets

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dTetany

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View Answer Rickets

Secondary cell wall of sclerenchyma cells is impregnated with_________________?


aCellulose

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bPeptidoglycan and murein

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cLignin

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dPectin

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View Answer Lignin

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


aProgesterone

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bOestrogen

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cParathyroid hormone

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dCalcitonin

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View Answer Oestrogen

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


aBetween radius and ulna

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bBetween ulna and scapula

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cBetween humerus and scapula

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dBetween femur and tibia.

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Higher turgor pressure in a plant cell is maintained by________________?


aLarge number of vacoules in a plant cell

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

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cHigher osmotic pressure of the cell vacuole

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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

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bLigaments

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cMuscles

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dTendon

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View Answer Ligaments

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


aFibrous joints.

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bCartilaginous joints.

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cSynovial joints.

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dNone of these

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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.

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bLiving cells of cortex and pith with higher turgor pressure.

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cCollenchyma cells

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dAll of these

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View Answer All of these

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