Q. No.The function of the gap junction is to?
1.
Perform cementing to keep neighbouring cells together
2.
Facilitate communication between adjoining cells by connecting the cytoplasm for rapid transfer of ions, small molecules and some large molecules
3.
Separate two cells from each other
4.
Stop substances from leaking across a tissue
The terga,sterna and pleura of the cockroach body are joined by:
1. cementing glue
2. muscular tissue
3. arthrodial membrane
4. cartilage
Choose the correctly matched pair:
1. Tendon-Specialized connective tissue
2. Adipose tissue-Dense connective tissue
3. Areolar tissue- Loose connective tissue
4. Cartilage- Loose connective tissue
Choose the correctly matched pair:
1. Inner lining of salivary ducts- Ciliated epithelium
2. Moist surface of buccal cavity- Glandular epithelium
3. Tubular parts of nephrons- Cuboidal epithelium
4. Inner surface of bronchioles- Squamous epithelium
2. Both fore wings and hind wings develop
3. Labium develops
4. Mandibles become harder
Compared to those of humans, the erythrocytes in frogs 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 located 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 |
| 1. | the typhlosole greatly increases the effective absorption area of the digested food in the intestine |
| 2. | the S-shaped setae embedded in the integument are the defensive weapons used against the enemies |
| 3. | it has a long dorsal tubular heart |
| 4. | fertilization of eggs occurs inside the body |
1. bronchioles and fallopian tubes
2. bile duct and oesophagus
3. fallopian tubes and urethra
4. eustachian tube and stomach lining
| 1. | Oxygen is transported by hemoglobin in blood |
| 2. | The 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 |
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