Tag: skeleton and joints

Questions Related to skeleton and joints

What evidence convinced scientists that Archaeopteryx should be classified as a bird rather than a small dinosaur?

biology skeleton and joints introduction to movement introduction to locomotion movement

  1. Scales.

  2. Toothless, elongated mouth like beak.

  3. A tail similar to that of modern birds.

  4. Fused collar bone, indicating flying ability.

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Correct Option: D

Presence of furcula is a characteristic feature 'of

biology skeleton and joints introduction to movement introduction to locomotion movement

  1. Frogs

  2. Reptiles

  3. Birds

  4. Mammals

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Correct Option: C
Explanation:

The clavicle and inter clavicle form a V-shaped furcula or wish bone or merry thought in birds.

A skull excavated from a place had large zygomatic arches, 2 pairs of large incisors, 2 pairs of premolars following a gap and 3 pairs of large molars. The foramen magnum was direction posterior. This skull belongs to a 

biology skeleton and joints introduction to movement introduction to locomotion movement

  1. Predatory mammal with bipedal locomotion

  2. Predaceous dinosaur with bipedal locomotion

  3. herbivorous mammal with Quadrupedal locomotion

  4. Herbivorous dinosaur with Quadrupedal locomotion

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Correct Option: A
Explanation:

A skull excavated from a place had large zygomatic arches, 2 pairs of large incisors, 2 pairs of premolars following a gap and 3 pairs of large molars. The foramen magnum was direction posterior. This skull belongs to a mammalian skull because it is predatory mammal with bipedal locomotion.

So, the correct option is ‘predatory mammal with bipedal locomotion’.

Which of the following features is common to all animals without any exception?

zoology skeleton and joints introduction to movement introduction to locomotion movement

  1. Locomotion

  2. Specialised nervous system

  3. Multicellularity

  4. Herbivorous mode of nutrition

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Correct Option: A
Explanation:
  • Locomotion is the active movement i.e. with consumption of energy shown by all organism. Need, type and extent of locomotion differ from organisms to organism based on their organisation. 
  • The specialised nervous system is seen in only organisms with organ system level of organisation. 
  • Several organisms are unicellular, hence multicellularity is not a common feature of all organisms. 
  • All organisms differ in their mode of nutrition. They can be autotrophic or heterotrophic. If heterotrophic, they can be herbivores, carnivores or omnivores.
  • So, the correct option is 'Locomotion'.

How many muscles are used in the movement of a bone?

zoology skeleton and joints introduction to movement introduction to locomotion movement

  1. 1

  2. 2

  3. 3

  4. 4

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Correct Option: B

The movement and locomotion of all animals is exactly the same.

zoology skeleton and joints introduction to movement introduction to locomotion movement

  1. True

  2. False

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Correct Option: B
Explanation:
Animals exhibit a wide range of movements. The voluntary movements that result in a change of place or location are called locomotion. There are three main types of movements, namely, amoeboid, ciliary and muscular.
Streaming of protoplasm in the unicellular organisms like Amoeba is a simple form of movement. In Paramoecium, cilia help in the movement of food and in locomotion as well. In Paramoecium, cilia help in the movement of food and in locomotion as well. Birds fly, fish swim and humans use limbs for changes in body postures and locomotion as well. Hence, the answer is false.

Which of the following type of movement is supported by joints?

zoology skeleton and joints introduction to movement introduction to locomotion movement

  1. Bending

  2. Partial rotation

  3. Complete rotation

  4. All of the above

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Correct Option: D
Explanation:

There are various types of joints in the human body.

1. Hinge joint: Hinge joint is a common class of synovial joint that includes the ankle, elbow and knee joints. Maximum rotation is 180$^o$. (partial rotation)
2. Ball and socket joints provide maximum rotation i.e. a full circle (complete rotation). Example: Shoulder joint, hip joint
3. The joints of the vertebrae provide a scope for bending movement, such joints are partially movable i.e. diarthrosis joints.
Thus, the types of movements supported by the joints are bending, partial rotation and complete rotation.

Which of the following parts of the body shows maximum movements?

zoology skeleton and joints introduction to movement introduction to locomotion movement

  1. Joints

  2. Muscles

  3. Bones

  4. All of the above

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Correct Option: A
Explanation:
  • Joints are the areas where two or more bones meet.
  • Joints are of three types. They are Synovial Joints, Fibrous Joints, and Cartilaginous Joints
  • Joints help in bringing about movements in different parts of the body. 
  • Synovial joints are the freely movable joints and show maximum moments in the body.
  • Hence parts of the body that shows maximum movements are joints.
  • So, the correct answer is 'Joints.

Which of the following characteristics can be related to contraction of muscles?

zoology skeleton and joints introduction to movement introduction to locomotion movement

  1. Shorter

  2. Stiffer

  3. Thicker

  4. All of the above

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Correct Option: D
Explanation:

Muscle is a tissue composed of cells or fibers, the contraction of which produces movement in the body. Muscle acts like a dense elastic band. When a muscle contracts, the length decreases, thus making the muscle shorter, stiffer and thicker. When the muscle relaxes, it makes the muscle increase in length i.e longer and thinner. 

Muscular movement requires maximum energy because

zoology skeleton and joints introduction to movement introduction to locomotion movement

  1. It requires vigorous contraction and relaxation

  2. It requires muscular force for movement

  3. It improves the immune system

  4. Both A and B

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Correct Option: D