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Structural Organisation In Animals

Multiple Choice Questions

71.

The crystal of lead zirconate is a key component of

sonography
electrocardiography
electroencephalography
magnetoencephalography

72.

Assertion : Leaf butterfly and stick insect show mimicry to dodge their enemies.

Reason : Mimicry is a method to acquire body colour blending with the surroundings.

If both Assertion and Reason are true and the reason is the correct explanation of the assertion
If both Assertion and Reason are true but the reason is not the correct explanation of the assertion
If Assertion is true statement but Reason is false
If both Assertion and Reason are false statements

73.

Lucocytes (WBCs) are considered as true cells because

they possess nucleus
they do not contain haemoglobin
they show great power of movement
they are responsible forphagocytic activity

74.

The function of microvilli is :

cellular movement
specialized uptake of macro molecules
increase in surface area for absorption
extensive movement of substances over cell surface

75.

Adipocytes are mainly found in

bones
cartilages
connective tissue
nerves

76.
The outer covering of cartilage is called

peritonium

periosteum

endosteum

perichondrium

perichondrium

Perichondrium is a dense layer of fibrous connective tissue that covers the surface of cartilage.

The peritoneum is the serous membrane forming the lining of the abdominal cavity or coelom in amniotes and some invertebrates, such as annelids. It covers most of the intra-abdominal (or coelomic) organs, and is composed of a layer of mesothelium supported by a thin layer of connective tissue.

Periosteum a dense layer of vascular connective tissue enveloping the bones except at the surfaces of the joints.

Endosteum is a thin vascular membrane of connective tissue that lines the inner surface of the bony tissue that forms the medullary cavity of long bones.