Which one of the following organisms lack muscles and skeleton for movement?

(a)

Dog

(b)

Snail

(c)

Earth worm

(d)

Human being

__________ joints are immovable.

(a)

Shoulder and arm

(b)

Knee and joint

(c)

Upper jaw and skull

(d)

Lower jaw and upper jaw

External ear (pinna )is supported by

(a)

bone

(b)

cartilage

(c)

tendon

(d)

capsule

Cockroach moves with the help of its

(a)

leg

(b)

bone

(c)

muscular foot

(d)

whole body

Which one of the following categories of vertebrae are correctly numbered.

(a)

Cervical-7

(b)

Thoracic-10

(c)

Lumbar - 4

(d)

Sacral - 4