The ability to fight disease-causing organisms is conferred by the ____ system.

[Human-Health-and-Disease] [class-xii ]

• digestive
• respiratory
• immune
• endocrine
Correct Option: C  [ immune ]

Remark: This ability is conferred by the immune system.

One symptom of ascariasis, besides internal bleeding and fever, is muscular ____.

[Human-Health-and-Disease] [class-xii ]

• weakness
• pain
• numbness
• cramps
Correct Option: B  [ pain ]

Remark: Symptoms of ascariasis include internal bleeding, muscular pain, fever, anemia.

The highly intensified immune response upon re-exposure to a pathogen is called the ____ response.

[Human-Health-and-Disease] [class-xii ]

• primary
• initial
• memory
• first
Correct Option: C  [ memory ]

Remark: The highly intensified secondary response is ascribed to the fact that our body appears to have memory of the first encounter.

One potential symptom of drug withdrawal syndrome is intense ____.

[Human-Health-and-Disease] [class-xii ]

• appetite
• sleep
• anxiety
• calmness
Correct Option: C  [ anxiety ]

Remark: Withdrawal syndrome is characterised by anxiety, shakiness, nausea and sweating.

Sportspersons misuse drugs and hormones to increase muscle strength and ____ and to promote aggressiveness.

[Human-Health-and-Disease] [class-xii ]

• bulk
• flexibility
• endurance
• speed
Correct Option: A  [ bulk ]

Remark: They misuse anabolic steroids to increase muscle strength and bulk.

In females, a side effect of anabolic steroid use is increased ____.

[Human-Health-and-Disease] [class-xii ]

• fertility
• aggressiveness
• calmness
• height
Correct Option: B  [ aggressiveness ]

Remark: Side-effects in females include increased aggressiveness.