<p><span style="font-size:11pt"><span style="font-family:"Calibri","sans-serif""><span style="font-size:14.0pt"><span style="font-family:SolaimanLipi">পঞ্চম অধ্যায়</span></span></span></span></p> <p><span style="font-size:11pt"><span style="font-family:"Calibri","sans-serif""><span style="font-size:14.0pt"><span style="font-family:SolaimanLipi">সমন্বয় ও নিঃসরণ </span></span></span></span></p> <p><span style="font-size:11pt"><span style="font-family:"Calibri","sans-serif""><span style="font-size:14.0pt"><span style="font-family:SolaimanLipi">বহু নির্বাচনী প্রশ্ন</span></span></span></span></p> <p><span style="font-size:11pt"><span style="font-family:"Calibri","sans-serif""><span style="font-size:14.0pt"><span style="font-family:SolaimanLipi">[পূর্ব প্রকাশের পর]</span></span></span></span></p> <p><span style="font-size:11pt"><span style="font-family:"Calibri","sans-serif""><span style="font-size:14.0pt"><span style="font-family:SolaimanLipi">১৬। স্নায়ুতন্ত্রের রং কী?</span></span></span></span></p> <p><span style="font-size:11pt"><span style="font-family:"Calibri","sans-serif""><span style="font-size:14.0pt"><span style="font-family:SolaimanLipi">ক) কালো      খ) সাদা   </span></span></span></span></p> <p><span style="font-size:11pt"><span style="font-family:"Calibri","sans-serif""><span style="font-size:14.0pt"><span style="font-family:SolaimanLipi">গ) হলুদ       গ) লাল</span></span></span></span></p> <p><span style="font-size:11pt"><span style="font-family:"Calibri","sans-serif""><span style="font-size:14.0pt"><span style="font-family:SolaimanLipi">১৭। স্নায়ুকোষের কাজ</span></span><span style="font-size:14.0pt"><span style="font-family:"Times New Roman","serif"">—</span></span></span></span></p> <p><span style="font-size:11pt"><span style="font-family:"Calibri","sans-serif""><span style="font-size:14.0pt"><span style="font-family:"Times New Roman","serif"">i. </span></span><span style="font-size:14.0pt"><span style="font-family:SolaimanLipi">জৈবিক কাজের সমন্বয় </span></span></span></span></p> <p><span style="font-size:11pt"><span style="font-family:"Calibri","sans-serif""><span style="font-size:14.0pt"><span style="font-family:"Times New Roman","serif"">ii. </span></span><span style="font-size:14.0pt"><span style="font-family:SolaimanLipi">মস্তিষ্কে স্মৃতি সংরক্ষণ</span></span></span></span></p> <p><span style="font-size:11pt"><span style="font-family:"Calibri","sans-serif""><span style="font-size:14.0pt"><span style="font-family:"Times New Roman","serif"">iii. </span></span><span style="font-size:14.0pt"><span style="font-family:SolaimanLipi">উদ্দীপনায় সাড়া না দেওয়া</span></span></span></span></p> <p><span style="font-size:11pt"><span style="font-family:"Calibri","sans-serif""><span style="font-size:14.0pt"><span style="font-family:SolaimanLipi">নিচের কোনটি সঠিক?</span></span></span></span></p> <p><span style="font-size:11pt"><span style="font-family:"Calibri","sans-serif""><span style="font-size:14.0pt"><span style="font-family:SolaimanLipi">ক)</span></span><span style="font-size:14.0pt"><span style="font-family:"Times New Roman","serif""> i </span></span><span style="font-size:14.0pt"><span style="font-family:SolaimanLipi">ও</span></span><span style="font-size:14.0pt"><span style="font-family:"Times New Roman","serif""> iii</span></span><span style="font-size:14.0pt"><span style="font-family:SolaimanLipi">       খ)</span></span><span style="font-size:14.0pt"><span style="font-family:"Times New Roman","serif""> ii </span></span><span style="font-size:14.0pt"><span style="font-family:SolaimanLipi">ও </span></span><span style="font-size:14.0pt"><span style="font-family:"Times New Roman","serif"">iii</span></span><span style="font-size:14.0pt"><span style="font-family:SolaimanLipi">    গ)</span></span><span style="font-size:14.0pt"><span style="font-family:"Times New Roman","serif""> i </span></span><span style="font-size:14.0pt"><span style="font-family:SolaimanLipi">ও</span></span><span style="font-size:14.0pt"><span style="font-family:"Times New Roman","serif""> ii</span></span><span style="font-size:14.0pt"><span style="font-family:SolaimanLipi">    ঘ) </span></span><span style="font-size:14.0pt"><span style="font-family:"Times New Roman","serif"">i, ii </span></span><span style="font-size:14.0pt"><span style="font-family:SolaimanLipi">ও</span></span><span style="font-size:14.0pt"><span style="font-family:"Times New Roman","serif""> iii</span></span></span></span></p> <p><span style="font-size:11pt"><span style="font-family:"Calibri","sans-serif""><span style="font-size:14.0pt"><span style="font-family:SolaimanLipi">১৮। দেহের ভারসাম্য রক্ষা করে কোনটি?</span></span></span></span></p> <p><span style="font-size:11pt"><span style="font-family:"Calibri","sans-serif""><span style="font-size:14.0pt"><span style="font-family:SolaimanLipi">ক) ড্যানড্রাম    </span></span></span></span></p> <p><span style="font-size:11pt"><span style="font-family:"Calibri","sans-serif""><span style="font-size:14.0pt"><span style="font-family:SolaimanLipi">খ) লঘুমস্তিষ্ক    </span></span></span></span></p> <p><span style="font-size:11pt"><span style="font-family:"Calibri","sans-serif""><span style="font-size:14.0pt"><span style="font-family:SolaimanLipi">গ) মেডুলা      </span></span></span></span></p> <p><span style="font-size:11pt"><span style="font-family:"Calibri","sans-serif""><span style="font-size:14.0pt"><span style="font-family:SolaimanLipi">ঘ) গুরুমস্তিষ্ক</span></span></span></span></p> <p><span style="font-size:11pt"><span style="font-family:"Calibri","sans-serif""><span style="font-size:14.0pt"><span style="font-family:SolaimanLipi">১৯। মূত্র থেকে কোন ধরনের বর্জ্য পদার্থ বের হয়?</span></span></span></span></p> <p><span style="font-size:11pt"><span style="font-family:"Calibri","sans-serif""><span style="font-size:14.0pt"><span style="font-family:SolaimanLipi">ক) লৌহ       খ) ইউরিয়া   গ) নাইট্রোজেন   </span></span></span></span></p> <p><span style="font-size:11pt"><span style="font-family:"Calibri","sans-serif""><span style="font-size:14.0pt"><span style="font-family:SolaimanLipi">ঘ) কার্বন ডাই-অক্সাইড</span></span></span></span></p> <p><span style="font-size:11pt"><span style="font-family:"Calibri","sans-serif""><span style="font-size:14.0pt"><span style="font-family:SolaimanLipi">২০। ঘামে থাকে</span></span><span style="font-size:14.0pt"><span style="font-family:"Times New Roman","serif"">—</span></span></span></span></p> <p><span style="font-size:11pt"><span style="font-family:"Calibri","sans-serif""><span style="font-size:14.0pt"><span style="font-family:"Times New Roman","serif"">i. </span></span><span style="font-size:14.0pt"><span style="font-family:SolaimanLipi">পানি ও অক্সিজেন </span></span></span></span></p> <p><span style="font-size:11pt"><span style="font-family:"Calibri","sans-serif""><span style="font-size:14.0pt"><span style="font-family:"Times New Roman","serif"">ii. </span></span><span style="font-size:14.0pt"><span style="font-family:SolaimanLipi">পানি ও লবণ</span></span></span></span></p> <p><span style="font-size:11pt"><span style="font-family:"Calibri","sans-serif""><span style="font-size:14.0pt"><span style="font-family:"Times New Roman","serif"">iii. </span></span><span style="font-size:14.0pt"><span style="font-family:SolaimanLipi"> লবণ ও কার্বন ডাই-অক্সাইড</span></span></span></span></p> <p><span style="font-size:11pt"><span style="font-family:"Calibri","sans-serif""><span style="font-size:14.0pt"><span style="font-family:SolaimanLipi">নিচের কোনটি সঠিক?</span></span></span></span></p> <p><span style="font-size:11pt"><span style="font-family:"Calibri","sans-serif""><span style="font-size:14.0pt"><span style="font-family:SolaimanLipi">ক)</span></span><span style="font-size:14.0pt"><span style="font-family:"Times New Roman","serif""> i </span></span><span style="font-size:14.0pt"><span style="font-family:SolaimanLipi">ও </span></span><span style="font-size:14.0pt"><span style="font-family:"Times New Roman","serif"">iii</span></span><span style="font-size:14.0pt"><span style="font-family:SolaimanLipi">      খ)</span></span><span style="font-size:14.0pt"><span style="font-family:"Times New Roman","serif""> ii </span></span><span style="font-size:14.0pt"><span style="font-family:SolaimanLipi">ও </span></span><span style="font-size:14.0pt"><span style="font-family:"Times New Roman","serif"">iii</span></span><span style="font-size:14.0pt"><span style="font-family:SolaimanLipi">    গ)</span></span><span style="font-size:14.0pt"><span style="font-family:"Times New Roman","serif""> i </span></span><span style="font-size:14.0pt"><span style="font-family:SolaimanLipi">ও</span></span><span style="font-size:14.0pt"><span style="font-family:"Times New Roman","serif""> ii</span></span><span style="font-size:14.0pt"><span style="font-family:SolaimanLipi">    ঘ) </span></span><span style="font-size:14.0pt"><span style="font-family:"Times New Roman","serif"">i, ii </span></span><span style="font-size:14.0pt"><span style="font-family:SolaimanLipi">ও</span></span><span style="font-size:14.0pt"><span style="font-family:"Times New Roman","serif""> iii</span></span></span></span></p> <p><span style="font-size:11pt"><span style="font-family:"Calibri","sans-serif""><span style="font-size:14.0pt"><span style="font-family:SolaimanLipi">২১। নিঃশ্বাসের বায়ুতে শতকরা কত ভাগ </span></span><span style="font-size:14.0pt"><span style="font-family:"Times New Roman","serif"">CO<sub>2</sub></span></span><span style="font-size:14.0pt"><span style="font-family:SolaimanLipi"> থাকে?</span></span></span></span></p> <p><span style="font-size:11pt"><span style="font-family:"Calibri","sans-serif""><span style="font-size:14.0pt"><span style="font-family:SolaimanLipi">ক) ৬     খ) ৫    </span></span></span></span></p> <p><span style="font-size:11pt"><span style="font-family:"Calibri","sans-serif""><span style="font-size:14.0pt"><span style="font-family:SolaimanLipi">গ) ৪    ঘ) ৩</span></span></span></span></p> <p><span style="font-size:11pt"><span style="font-family:"Calibri","sans-serif""><span style="font-size:14.0pt"><span style="font-family:SolaimanLipi">২২। মানব মস্তিষ্কের সবচেয়ে উন্নত অংশ কোনটি?</span></span></span></span></p> <p><span style="font-size:11pt"><span style="font-family:"Calibri","sans-serif""><span style="font-size:14.0pt"><span style="font-family:SolaimanLipi">ক) মধ্যমস্তিষ্ক   খ) লঘুমস্তিষ্ক   </span></span></span></span></p> <p><span style="font-size:11pt"><span style="font-family:"Calibri","sans-serif""><span style="font-size:14.0pt"><span style="font-family:SolaimanLipi">গ) মেডুলা      </span></span></span></span></p> <p><span style="font-size:11pt"><span style="font-family:"Calibri","sans-serif""><span style="font-size:14.0pt"><span style="font-family:SolaimanLipi">ঘ) গুরুমস্তিষ্ক</span></span></span></span></p> <p> </p> <p><span style="font-size:11pt"><span style="font-family:"Calibri","sans-serif""><span style="font-size:14.0pt"><span style="font-family:SolaimanLipi">উত্তর : ১৬. খ ১৭. গ ১৮. খ ১৯. গ ২০. খ ২১. গ ২২. ঘ।</span></span></span></span></p>