Class 9 Biology MCQs - Chapter 9

Transport Multiple Choice Questions (MCQ) PDF - 36

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Transport Questions & Answers PDF Download: MCQ Quiz 36

MCQ 176: During the night, the plants keep their

A) mesophyll opens

B) chlorophyll blocked

C) stomata opens

D) stomata closed

MCQ 177: The scientist who described the blood circulation pathway for the first time is

A) Ibn-e-Nafees

B) Charles Darwin

C) Ernst Haeckel

D) Rachel Carson

MCQ 178: The meaning of "angina pectoris" is

A) artery death

B) heart death

C) chest pain

D) knee pain

MCQ 179: The macrophages produced by monocytes are responsible for

A) absorbing hydrogen

B) absorbing oxygen

C) engulfing germs

D) preventing clotting

MCQ 180: The time for diastole in one heartbeat is

A) 0.6 seconds

B) 0.8 seconds

C) 0.4 seconds

D) 0.5 seconds

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