Structural Organisation in Animals

In both sexes of cockroach, a pair of jointed filamentous structures called anal cerci are present on

1. 5th segment
2. 10th segment
3. 8th and 9th segment
4. 11th segment

Match List I with List II related to digestive system of cockroach. Choose the correct answer from the options given below:

1. A-IV, B-II, C-III, D-I
2. A-I, B-II, C-III, D-IV
3. A-IV, B-III, C-II, D-I
4. A-III, B-II, C-IV, D-I

Which of the following is/are present in female cockroach? Choose the most appropriate answer from the options given below:

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

In cockroach, excretion is brought about by – Choose the correct answer from the options given below :

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

Which of the following is characteristic feature of cockroach regarding sexual dimorphism?

1. Presence of anal styles
2. Presence of sclerites
3. Presence of anal cerci
4. Dark brown body colour and anal cerci

Tegmina in cockroach, arises from

1. Prothorax
2. Mesothorax
3. Metathorax
4. Prothorax and Mesothorax

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)

Excretion in cockroach is performed by all, EXCEPT:

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

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

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.

Select the correct sequence of organs in the alimentary canal of cockroach starting from mouth:

1. Pharynx Oesophagus Gizzard Ileum Crop Colon Rectum
2. Pharynx Oesophagus Ileum Crop Gizzard Colon Rectum
3. Pharynx Oesophagus Crop Gizzard Ileum Colon Rectum
4. Pharynx Oesophagus Gizzard Crop Ileum Colon Rectum

Which of the following features is used to identify a male cockroach from a female cockroach?

1. Forewings with darker tegmina
2. Presence of caudal styles
3. Presence of anal cerci
4. Presence of a boat-shaped sternum on the 9th abdominal segment

In male cockroaches, sperms are stored in which part of the reproductive system ?

1. Vas deferens
2. Seminal vesicles
3. Testes
4. Mushroom glands

The terga, sterna and pleura of cockroach body are joined by :

1. Cartilage
2. Cementing glue
3. Arthrodial membrane
4. Muscular tissue

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

1. Both fore wings and hind wings develop
2. Mandibles become harder
3. Labium develops
4. Anal cerci develop

Which one of the following is one of the paths followed by air or O2 during respiration in the adult male Periplaneta americana as it enters the animal body?

1. Spiracle in metathorax, trachea, tracheoles, oxygen diffuses into cells
2. Mouth, bronchial tube, trachea, oxygen enters cells
3. Spiracles in prothorax, tracheoles, trachea, oxygen diffuses into cells.
4. Hypopharynx, mouth, pharynx, trachea, tissues

Select the correct option with respect to Cockroaches :-

1. Nervous system comprises of a dorsal nerve cord and ten pairs of ganglion
2. The fore wings are tegmina which are used in flight
3. Malpighian tubules convert nitrogenous wastes into urea
4. Males bear short anal styles not present in females

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

1. Males bear a pair of short thread like anal styles
2. There are 16 very long Malpighian tubules present at the junctions of midgut and hindgut
3. Nervous system located dorsally, consists of segmentally arranged ganglia joined by a pair of longitudinal connectives
4. Grinding of food is carried out only by the mouth parts

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

1. Oxygen is transported by haemoglobin in blood
2. The food is ground by mandibles and gizzard
3. Nitrogenous excretory product is urea
4. Malpighian tubules are excretory organs projecting out from the colon

Which one of the following is the true description about an animal concerned?

1. Frog — Body divisible into three regions-head, neck and trunk
2. Rat — Left kidney is slightly higher in position than the right one
3. Earthworm — The alimentary canal consists of a sequence of pharynx, oesophagus, stomach, gizzard and intestine
4. Cockroach — 10 pairs of spiracles (2 pairs on thorax and 8 pairs on abdomen)

Ommatidia serve the purpose of photoreception in

1. cockroach
2. frog
3. humans
4. sunflower.