NEET Biology question

Select the correct options to fill up the blanks. 1. With repeated use of drugs, the tolerance level of receptors present in our body . 2. Smoking increases content and reduces the concentration of in blood. 3. Cannabinoid receptors are present in the . 4. Morphine is a very effective and . 5. Opioids are extracted from the of poppy plant, Papaver somniferum.

• (A)(i) Decreases; (ii) CO, CO2; (iii) brain; (iv) hallucinogen, depressant; (v) latex
• (B)(i) increases; (ii) CO, haembound oxygen; (iii) brain; (iv) sedative, painkiller; (v) latexCorrect
• (C)(i) Decreases; (ii) CO, haembound oxygen; (iii) brain; (iv) sedative, painkiller; (v) resin
• (D)(i) increases; (ii) CO, haembound oxygen; (iii) heart; (iv) sedative, painkiller; (v) latex