Biology : Structural Organisation In Animals

Common name of some animals are given in Column A, write their scientific name in Column B.
Column A             Column B

a. Tiger               ________________
b. Peacock          ________________
c. Housefly          ________________

Complete the following statement :

a. In Cockroach grinding of food particle is performed by ____________

b. Malpighian tubules help in removal of ___________________________

c. Hind gut of Cockroach is differentiated into ______________________ 

d. In Cockroach blood vessels open into spaces called ______________

Explain the digestive system of cockroach. 

What external changes are visible after the last moult of a cockroach nymph?

• Mandibles become harder

• Anal cerci develop

• Both fore wings and hind wings develop

• Both fore wings and hind wings develop

The function of the gap junction is to

• performing cementing to keep neighbouring cells together

• facilitate communication between adjoining cells by connecting the cytoplasm for rapid transfer of ions, small molecules and some large molecules.

• separate two cells from each other

• separate two cells from each other

The body cells in cockroach discharge their nitrogenous waste in the haemolymph mainly in the form of 

• ammonia

• potassium urate

• urea

• urea

Pheretima and its close relatives derive nourishment from

• sugarcane roots

• decaying fallen leaves and soil organic matter

• soil insects

• soil insects

Choose the correctly matched pair.

• Tendon - Specialised connective tissue

• Adipose tissue - Dense connective tissue

• Tubular parts of nephrons - Cuboidal epithelium

• Tubular parts of nephrons - Cuboidal epithelium

Compared to those of humans, the erythrocytes in frog are

• without nucleus but with haemoglobin

• nucleated and with haemoglobin

• very much smaller and fewer

• very much smaller and fewer

Select the correct statement from the ones given below with respect to Periplaneta americana

• Nervous system located dorsally, consists of segmentally arranged ganglia joined by a pair of longitudinal connectives

• Males bear a pair of short thread like anal styles

• There are 16 very long Malpighian tubules present at the junctions of midgut and hindgut

• There are 16 very long Malpighian tubules present at the junctions of midgut and hindgut