10th Class Biology First half Book Paper

Q1. Multiple choice questions (Attempt all · 12 × 1 = 12)

1. The beginning of the swallowing process is:
   1. Involuntary
   2. Voluntary
   3. Both voluntary and involuntary
   4. Automatic only
2. What triggers the release of luteinizing hormone (LH) in females?
   1. Low levels of estrogen
   2. High levels of estrogen
   3. Ovulation
   4. Menstruation
3. The scientist who discovered pulmonary and systemic circulation was:
   1. Ibn al Nafees
   2. William Harvey
   3. Louis Pasteur
   4. Hippocrates
4. The trachea is kept permanently open by:
   1. Cartilage rings
   2. Muscles
   3. Ligaments
   4. Fat cells
5. Which hormone increases calcium levels in blood?
   1. Parathormone
   2. Calcitonin
   3. Thyroxine
   4. Insulin
6. Blood from the kidneys returns to the inferior vena cava via:
   1. Renal arteries
   2. Ureters
   3. Renal veins
   4. Capillaries
7. The symptoms of constipation include:
   1. Increased frequency of daily stools
   2. Decreased frequency of daily stools
   3. Watery stools
   4. Bloody stools
8. The outer part of each ovary is surrounded by:
   1. Follicles
   2. Germ cells
   3. Polar bodies
   4. Zygotes
9. Which two components work together to stop bleeding?
   1. RBCs and WBCs
   2. Platelets and plasma proteins
   3. Platelets and hemoglobin
   4. WBCs and antibodies
10. The most common cause of pneumonia is:
    1. Virus
    2. Fungus
    3. Bacteria
    4. Pollution
11. Which nervous system controls involuntary actions?
    1. Somatic
    2. Autonomic
    3. Sympathetic
    4. Parasympathetic
12. The process in which substances are actively transported from blood capillaries into the nephron tubule is called:
    1. Filtration
    2. Tubular secretion
    3. Osmosis
    4. Diffusion