Free Locomotion And Movement (Weekly Quiz: 4) NEET Biology Questions & Answers with Detailed Explanation & Full Review

Free Locomotion And Movement (Weekly Quiz: 4) Time:

Question-1

Select the correct statement with respect to locomotion in humans.

(a)

(b)

(c)

(d)

Explanation:

Answer: (b)

Vertebral column has 12 thoracic vertebrate. The joints between adjacent vertebrae is cartilaginous joint which permits limited movements. Progesterone is secreted by corpus luteum which supports pregnancy in females.


Question-2

"X" is a large triangular flat bone situated in the dorsal part of the thorax between the "Y" and the seventh ribs. Identify "X" and "Y".

(a)

(b)

(c)

(d)

Explanation:

Answer: (d)

Scapula (X) is a large triangular flat bone situated in the dorsal part of the thorax between the second (Y) and the seventh ribs.


Question-3

Statement 1 :
Muscle contraction force increases with rise in strength of stimulus.
Statement 2 :
This is due to increased contraction of individual muscle fibres with increase in stimulus strength

(a)

(b)

(c)

(d)

Explanation:

Answer: (a)

The muscle fibre always contracts with the maximum force and this force doesn't rise on increasing the strength of the stimulus. If the stimulus is of strength below the threshold, then the muscle fibre doesn't contract at all. This is known as All or None law. But the entire muscle doesn't obey this law, it means that force of contraction of muscle increase with rise in strength of the stimulus. This is due to the fact that the strength of the threshold stimulus varies from muscle fibre to muscle fibre in a muscle


Question-4

Select the correct statement with respect to locomotion in humans:

(a)

(b)

(c)

(d)

Explanation:

Answer: (b)

Vertebral column has 12 thoracic vertebrate. The joint between adjacent vertebrae is cartilaginous joint which permits limited movements. Progesterone is secreted by corpus luteum which supports in pregnancy in females. Deposition of uric acid in form of urate crystal in the joints are responsible for the inflammation and painful symptoms of gout.


Question-5

Extremities of long bones possess which of the following cartilages?

(a)

(b)

(c)

(d)

Explanation:

Answer: (d)

Hyaline cartilage has a clear, homogeneous, translucent, bluish-green matrix. It often contains a good number of very fine collagen fibres, which are difficult to observe. This cartilage is flexible, elastic and compressible. It is found in the sternal ribs, extremities of leg bones, tracheal and bronchial rings, laryngeal wall, nasal septum and superscapula. Elastic cartilage is found in the pinna, epiglottis, Eustachian tubes and tip of nose. Calcified cartilage is found in the suprascapula of frog. Fibrous cartilage is found in the intervertebral discs and pubic symphysis.


Question-6

Scapula is an example of

(a)

(b)

(c)

(d)


Question-7

Which of the following joints would allow no movement?

(a)

(b)

(c)

(d)

Explanation:

Answer: (d)

Fibrous joint is an attachment between bones, being held together by fibrous connective tissue. For example Suture between skull bones.


Question-8

Which one of the following is the correct matching of three items and their grouping category?
 Items Group
(a)Ilium, ischium, pubis Coxal bones of pelvic girdle
(b)Actin, myosin, rhodopsinMuscle proteins
(c)Cytosine, uracil, thiaminePyrimidines
(d)Malleus, incus, cochleaEar ossicles

(a)

(b)

(c)

(d)

Explanation:

Answer: (a)

The pelvic girdle is formed by two innominate bones (hip bones). Each innominate bones consists of three separate bones, ilium, ischium and the pubis.


Question-9

According to the sliding filament theory

(a)

(b)

(c)

(d)


Question-10

Read the following statements carefully and select the correct ones.
  1. Cardiac fibres are branched with one or more nuclei
  2. Smooth muscles are unbranched and cylindrical
  3. Skeletal muscles can be branched or unbranched
  4. Smooth muscles are non-striated

(a)

(b)

(c)

(d)

Explanation:

Answer: (b)

Smooth muscles are non-straited, unbranched and spindle shaped. Skeletal muscles are unbranched. Cardiac muscles fibres are uni-nucleated.


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