Indicate true (T) and false (F) among the following sentences.
(a) The movement and locomotion of all animals is exactly the same. ( )
(b) The cartilages are harder than bones. ( )
(c) The finger bones do not have joints. ( )
(d) The forearm has two bones. ( )
(e) Cockroaches have an outer skeleton. ( )

Correct Answer:

(a) The movement and locomotion of all animals are exactly the same. (False )

Explanation:

The movement and locomotion of animals depend on their body structure and organization. Therefore, as the animals possess varied body structures, the movement and locomotion of all animals are not exactly the same.

(b) The cartilages are harder than bones. (False )

Explanation:

Cartilage is a flexible connective tissue, and softer and much more flexible than bone. It is found in many areas of the body including Joints between bones e.g. the elbows, knees, and ankles.

(c) The finger bones do not have joints. (False )

Explanation:

The fingers contain hinge joints. There are four joints in each finger, totaling 20 joints in each hand!

Each of the fingers has three joints:

metacarpophalangeal joint (MCP) – the joint at the base of the finger.

proximal interphalangeal joint (PIP) – the joint in the middle of the finger.

distal interphalangeal joint (DIP) – the joint closest to the fingertip.

(d) The forearm has two bones. (True )

Two forearm bones are the radius and ulna.

(e) Cockroaches have an outer skeleton. (True )

Like other insects like grasshoppers and crabs, cockroaches have an outer skeleton or exoskeleton that supports and protects the organism's body.

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Updated on: 27-Mar-2023

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