Structural Organisation in Animals · Question 25

Choose the correct statement about a muscular tissue

1. Smooth muscles are multinucleated and involuntary.
2. Skeletal muscle fibres are uninucleated and found in parallel bundles.
3. Intercalated discs allow the cardiac muscle cells to contract as a unit.
4. The walls of blood vessels are made up of columnar epithelium.

Match List-I with List-II regarding the organs of Cockroach: Choose the correct answer from the options given below :

1. (a) - (i), (b) - (iv), (c) - (iii), (d) - (ii)
2. (a) - (iv), (b) - (i), (c) - (ii), (d) - (iii)
3. (a) - (iii), (b) - (ii), (c) - (i), (d) - (iv)
4. (a) - (ii), (b) - (iv), (c) - (i), (d) - (iii)

Choose the correct statements: Choose the most appropriate answer from the options given below:

1. A, B and E only
2. A, B and D only
3. B, C and E only
4. A, C and D only

Excretion in cockroach is performed by all, EXCEPT:

1. Hepatic caeca
2. Uricose glands
3. Malpighian tubules
4. Fat body

Which of the following statements wrongly represents the nature of smooth muscle?

1. These muscles are present in the wall of blood vessels
2. These muscles have no striations
3. They are involuntary muscles
4. Communication among the cells is performed by intercalated discs

Which of the following characteristics is incorrect with respect to cockroach?

1. 10th abdominal segment in both sexes, bears a pair of anal cerci
2. A ring of gastric caeca is present at the junction of midgut and hind gut
3. Hypopharynx lies within the cavity enclosed by the mouth parts
4. In females, 7th-9th sterna together form a genital pouch

Identify the types of cell junctions that help to stop the leakage of the substances across a tissue and facilitation of communication with neighbouring cells via rapid transfer of ions and molecules.

1. Adhering junctions and Gap junctions, respectively
2. Gap junctions and Adhering junctions, respectively
3. Tight junctions and Gap junctions, respectively
4. Adhering junctions and Tight junctions respectively

Following are the statements about prostomium of earthworm. Choose the correct answer from the options given below.

1. B and C only
2. A, B and C only
3. A, B and D only
4. A, B, C and D

If the head of cockroach is removed, it may live for few days because

1. the cockroach does not have nervous system.
2. the head holds a small proportion of a nervous system while the rest is situated along the ventral part of its body.
3. the head holds a 1/3rd of a nervous system while the rest is situated along the dorsal part of its body.
4. the supra-oesophageal ganglia of the cockroach are situated in ventral part of abdomen.

Cuboidal epithelium with brush border of microvilli is found in

1. Ducts of salivary gland
2. Proximal convoluted tubule of nephron
3. Eustachian tube
4. Lining of intestine