Pakistan MCQs

A. Rigid endoskeleton B. Protective and respiratory surface C. Hormone-secreting gland only D. Blood-filtering organ

A. Microscopic hair-like structures rather than skeletal levers B. Antibodies rather than proteins C. Bone marrow rather than epithelial cells D. Endocrine glands rather than membranes

A. Producing antibodies B. Reducing friction and protecting the body C. Pumping blood through vessels D. Digesting food particles

A. Flight, insulation, and display B. Urine concentration only C. Internal skeleton replacement D. Blood clotting inside vessels

A. Grow continuously with muscles B. Prevent any nervous activity C. Do not expand enough for body growth D. Are made only of calcium carbonate

A. Thin, moist, and highly permeable B. Dry, keratinized, and less permeable C. Covered only by cilia D. Completely without scales

A. External digestion B. Cutaneous respiration C. Producing red blood cells D. Grinding food

A. Thermoregulation and surface protection B. Photosynthesis C. Water propulsion D. Larval metamorphosis

A. Soft before hardening B. Already mineralized like bone C. Absent from the body forever D. Made of living muscle

A. Lies outside the body and blocks growth B. Grows with the animal and supports large body size C. Eliminates the need for muscles D. Prevents all movement

A. Hydrostatic skeleton B. Exoskeleton C. Notochord only D. Cartilaginous skull

A. Hydrostatic skeleton B. Bony endoskeleton C. Chitinous wing D. Calcareous shell