Free Support and Movement MCQs with Answers

• A. Reptiles
• B. Fish
• C. Insect
• D. None of these

Explanation: Vertebrates possess a vertebral column or backbone, whereas insects are invertebrate arthropods and lack a backbone.

• A. sternum
• B. clavicle
• C. maxilla
• D. radius

Explanation: The clavicle, or collarbone, is called the beauty bone because it forms the visible line between the neck and shoulder and helps support…

• A. Clavicle
• B. Scapula
• C. Both of these
• D. None of these

Explanation: The pectoral girdle consists of a clavicle and a scapula on each side, linking the upper limb to the axial skeleton.

• A. 7
• B. 12
• C. 5
• D. 4

Explanation: The lumbar region contains five vertebrae, numbered L1 to L5, and supports much of the body's weight.

• A. 7
• B. 12
• C. 5
• D. 4Standardized & Admissions Tests

Explanation: The sacrum is formed by the fusion of five sacral vertebrae, creating a strong bone between the two hip bones.

• A. 7
• B. 12
• C. 5
• D. 4Aquaculture

Explanation: The thoracic region contains 12 vertebrae, and each one articulates with ribs to help form the thoracic cage.

• A. Dorsal and ventral.
• B. Pectoral and Pelvic.
• C. Tail and anal
• D. All of these

Explanation: Pectoral fins and pelvic fins are paired because they occur as corresponding structures on the left and right sides of the fish.

• A. Reptiles
• B. Aves
• C. Amphibians
• D. Mammals.

Explanation: Amphibians, especially their aquatic larvae, show a fish-like body form and are adapted for swimming in water.

• A. 33 vertebrae
• B. 33 pairs of vertebrae
• C. 25 vertebrae
• D. 31 vertebrae

Explanation: The human vertebral column has 33 vertebrae in the early developmental or standard anatomical count, although some later fuse to form the…

• A. Carpals
• B. Metacarpals
• C. Phalanges
• D. Metatarsals

Explanation: The metacarpals are the five long bones forming the palm between the wrist and fingers.

• A. 4 bones
• B. 6 bones
• C. 8 bones
• D. 14 bones

Explanation: The wrist contains 8 carpal bones arranged in two rows of four. The likely distractor is 14, which is the total number of finger bones in…

• A. Femur
• B. Tibia
• C. Radius
• D. Fibula

Explanation: The radius is a bone of the forearm and is not part of the hind limb. The femur, tibia and fibula are all major bones of the hind limb, so…

• A. Ca & PO4
• B. CaCO3
• C. CaSO4
• D. SiO2

Explanation: Bone collagen is hardened mainly by deposition of calcium phosphate, represented here as Ca and PO4, which forms mineral crystals in the…

• A. Ectoderm.
• B. Endoderm.
• C. Mesoderm.
• D. All of these

Explanation: The endoskeleton develops mainly from mesoderm, the embryonic germ layer that gives rise to connective tissues, cartilage and bone.

• A. An enzyme that digest endocuticle during an arthropodal ecdysis
• B. A newly formed exoskeleton in authropods
• C. A hormone that regulates moulting in arthropods
• D. A process that involves moulting

Explanation: Ecdysone is a hormone produced by arthropods that initiates and regulates moulting by promoting changes in the old cuticle and development…

• A. CaPO4
• B. CaCO3
• C. CaSO4
• D. SiO2

Explanation: A marine snail's shell is mainly calcium carbonate, CaCO3, deposited by the mantle as the shell grows.

• A. Epicuticle
• B. Procuticle
• C. Ectocuticle
• D. None of these

Explanation: The procuticle forms the main bulk of an arthropod's exoskeleton and contains the tough exocuticle and more flexible endocuticle.

• A. They are surrounded by single or double pieces of hard skeleton.
• B. Their shell grows as the animal grows.
• C. They have hydrostatic skeleton.
• D. They move by tube feet

Explanation: Molluscs may have a shell, their shell grows with the animal, and their soft bodies can use a fluid-supported hydrostatic skeleton.

• A. 2-3 weeks
• B. 3-4 weeks.
• C. 2-3 months.
• D. 3-4 months.

Explanation: A bony callus develops after the soft callus and usually becomes established over about 2 to 3 months as new bone bridges the fracture.

• A. Fibroblast and osteoblast.
• B. Osteoblast and osteoclast.
• C. Osteoclast and osteocyte
• D. Onteocyte and osteoblast

Explanation: Soft callus formation involves fibroblasts producing connective tissue and osteoblasts beginning new bone formation around the fracture.