Pheretima and its close relatives derive nourishment from 

(1) sugarcane roots

(2) decaying fallen leaves and soil organic matter

(3) soil insects

(4) small pieces of fresh fallen leaves of maize

Compared to those of humans, the erythrocytes in frog are

(1) without nucleus but with haemoglobin

(2) nucleated and with haemoglobin

(3) very much smaller and fewer

(4) nucleated and without haemoglobin

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

(1) Nervous system dorsally, consists of segmentally arranged ganglia joined by a pair of longitudinal connectives

(2) Males bear a pair of short thread like anal styles

(3) There are 16 very long Malpighian tubules present at the junctions of midgut and hindgut

(4) Grinding of food is carried out only by the mouth parts

Which of the following is correctly states as it happens in the common cockroach?

(1) Oxygen is transported by haemoglobin in blood

(2) Nitrogenous excretory product is urea

(3) The food is ground by mandibles and gizzard

(4) malpighian tubules are excretory organs projecting out from the colon

The kind of epithelium which forms the inner walls of blood vessels is 

(1) cuboidal epithelium

(2) columnar epithelium

(3) ciliated columnar epithelium

(4) squamous epithelium

The epithelial tissue present on the inner surface of bronchioles and fallopian tubes is

(1) cuboidal

(2) glandular

(3) Ciliated

(4) squamous

If a live earthworm is pricked with a needle on its outer surface without damaging its gut, the fluid that comes out is 

(1) excretory fluid

(2) coelomic fluid

(3) haemolymph

(4) slimy mucus

The cell juctions called tight, adhering and gap junctions are found in

(1) muscular tissue

(2) connective tissue

(3) Epithelial tissue

(4) neural tissue

Earthworms have no skeleton but during burrowing, the anterior end becomes trugid and acts as a hudraulic skeleton. It is due to 

(1) coelomic fluid

(2) blood

(3) gut peristalsis

(4) seate

In which one of the following preparations are you likely to come across cell junctions frequently ?

(1) Ciliated epithelium

(2) Thrombocytes

(3) Tendon

(4) Hyaline cartilage