Q. No.| 1. | It covers the external surface of the body and the internal surface of many organs. |
| 2. | The neighbouring cells are held together by cell junctions and there is very little extracellular material. |
| 3. | The epithelial cells rest on a cellular basement membrane that separates it from underlying connective tissue. |
| 4. | There is no blood vessel supplying the nutrients to the epithelial cells. |
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When secretory granules leave cell by exocytosis with no loss of other cellular material, the glands are called
1. Holocrine
2. Merocrine
3. Apocrine
4. Autocrine
Juvenile hormone in cockroach is secreted by :
1. Corpora cardiaca
2. Prothoracic gland
3. Corpora allata
4. Corpora bigemina
Bipolar neurons are found in humans in :
| 1. Brain | 2. Spinal cord |
| 3. Embryonic stages | 4. Olfactory epithelium |
Mammals are the descendents of the reptilian group :
1. Therapsids
2. Thecodonts
3. Pelycosaurs
4. Dinosaurs
The function of the gap junction is to
1. facilitate communication between adjoining cells by connecting the cytoplasm for rapid transfer of ions, small molecules and some large molecules.
2. separate two cells from each other.
3. stop substance from leaking across a tissue.
4. performing cementing to keep neighbouring cells together.
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Which of the following statements is correct regarding cockroach?
1. Compound eye is also called as ocellus
2. Spiracle helps in excretion
3. Phallomere is present in female cockroach
4. Ventral nerve cord
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One very special feature in earthworm (Pheretima) is that –
1. Fertilisation for eggs occurs inside the body
2. The typhlosole greatly increases the effective absorption area of the digested food in the intestine
3. The S- shaped setae embedded in the integument are the defensive weapons used against the enemies
4. It has a long dorsal tubular heart
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Simple epithelium is a tissue in which the cells are
1. hardened and provide support to the organ
2. cemented directly to one another to form a single layer
3. continuously dividing to provide form to an organ
4. loosely connected to one another to form an irregular organ
The polysaccharide present in the matrix of a cartilage is known as
1. cartilagin
2. ossein
3. chondroitin
4. cassein
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