71.

Given below is the diagrammatic sketch of a certain type of connective tissue. Identify the parts labelled A, B, C and D, and select the right option about them.

• Part A	Part B	Part C	Part D
  Macrophage	Fibroblast	Collagen fibres	Mast cells

• Part A	Part B	Part C	Part D
  Mast cell	Macrophage	Fibroblast	Collagen fibres

• Part A	Part B	Part C	Part D
  Macrophage	Collagen fibres	Fibroblast	Mast cell

• Part A	Part B	Part C	Part D
  Macrophage	Collagen fibres	Fibroblast	Mast cell

The four sketches (A, B, C and D) given below, represent four different types of animal tissues. Which one of these is correctly identified in the options given, along with its correct location and function?

• Tissue	Location	Function
  Glandular epithelium	Intestine	Secretion

• Tissue	Location	Function
  Collagen fibres	Cartilage	Attach skeletal muscles to bones

• Tissue	Location	Function
  Smooth muscle tissue	Heart	Heart contarction

• Tissue	Location	Function
  Smooth muscle tissue	Heart	Heart contarction

How many pairs of contrasting characters in pea plants were studied by Mendel in his experiments?

• Five

• Six

• Eight

• Eight

The terga, sterna and pleura of cockroach body are joined by

• cementing glue

• muscular tissue

• arthrodial membrane

• arthrodial membrane

The ciliated columnar epithelial cells in humans are known to occur in

• bronchioles and fallopian tubes

• bile duct and oesophagus

• fallopian  tubes and urethra

• fallopian  tubes and urethra

Which of the following are correct states as it happens in the common cockroach?

• Oxygen is transported by haemoglobin in blood 

• Nitrogenous excretory products is urea

• The food is ground by mandibles and gizzard

• The food is ground by mandibles and gizzard

Ground tissue includes

• all tissue except epidermis and vascular bundles

• epidermis and cortex

• all tissues internal to endodermis

• all tissues internal to endodermis

The cells lining the blood vessels belong to  the category of 

• smooth muscle tissue

• squamous epithelium

• columnar epithelium

• columnar epithelium

Frogs differ from humans in possessing

• paired cerebral hemispheres

• chymotrypsin

• trypsin

• trypsin

Consider the following four statements (I - IV)related to the common frog Rana tigrina, and select the correct option stating which ones are true (T) and which one are false (F).

I. On dry land it would die due to lack of O₂ its mouth is forcibly kept closed for a few days.
II. It has four - chambered heart
III. On day land it turns uricotelic from ureotelic
IV. Its life -history is carried out in pond water.

• I	II	III	IV
  T	F	F	T

• I	II	III	IV
  T	T	F	F

• I	II	III	IV
  F	F	T	T

• I	II	III	IV
  F	F	T	T