NEET Zoology 2 — Questions and Answers
Question 1: Which part of the human brain controls balance and coordination?
- Cerebrum
- Medulla oblongata
- Hypothalamus
- Cerebellum (Correct answer)
Correct answer: Cerebellum
The cerebellum, located at the back of the brain, is responsible for coordinating voluntary movements and maintaining balance.
Question 2: What type of joint is found at the human knee?
- Ball and socket joint
- Hinge joint (Correct answer)
- Pivot joint
- Gliding joint
Correct answer: Hinge joint
The knee is a hinge joint that allows movement primarily in one plane (flexion and extension).
Question 3: Which hormone is secreted by the adrenal medulla during stress?
- Insulin
- Thyroxine
- Adrenaline (Epinephrine) (Correct answer)
- Cortisol
Correct answer: Adrenaline (Epinephrine)
The adrenal medulla secretes adrenaline (epinephrine) in response to stress, triggering the 'fight or flight' response.
Question 4: In which class of animals do we find a three-chambered heart?
- Mammals
- Birds
- Reptiles (most) (Correct answer)
- Fish
Correct answer: Reptiles (most)
Most reptiles (except crocodilians) have a three-chambered heart with two atria and one partially divided ventricle.
Question 5: What is the fluid found inside the seminiferous tubules called?
- Semen (Correct answer)
- Seminal plasma
- Testicular fluid
- Interstitial fluid
Correct answer: Semen
Semen is the fluid containing sperm cells and secretions from accessory glands that is ejaculated from the male reproductive system.
Question 6: Which type of immunity is acquired through vaccination?
- Natural passive immunity
- Natural active immunity
- Artificial active immunity (Correct answer)
- Artificial passive immunity
Correct answer: Artificial active immunity
Vaccination introduces antigens to stimulate the immune system to produce antibodies, conferring artificial active immunity.
NEET Zoology 2
Which part of the human brain controls balance and coordination?