Q. No.
The most abundant and widely distributed tissue in the bodies of complex animals is:
1. Epithelium
2. Connective
3. Muscular
4. Neural
The mouth part of the cockroach shown in the given diagram acts as a/an:
1. Upper lip
2. Tongue
3. Lower lip
4. Uvula
The C-shaped cartilaginous rings around the trachea are open posteriorly to:
(1) allow for expansion of the esophagus during swallowing
(2) allow the vocal cords to relax
(3) prevent food from entering the nasal cavity during swallowing
(4) prevent food from entering the trachea
The body cells in cockroach discharge their nitrogenous waste in the haemolymph mainly in the form of
(1) ammonia
(2) potassium urate
(3) urea
(4) calcium carbonate
Select the correct route for the passage of sperms in the male frogs.
(1) Testis → Bidder's canal → Kidney → Vasa efferentia → Urinogenital duct → Cloaca
(2) Testis → Vasa efferentia → Kidney → Seminal Vesicle → Urinogenital duct → Cloaca
(3) Test → Vasa efferentia → Bidder's canal → Ureter → Cloaca
(4) Testis → Vasa efferentia → Kidney → Bidder's canal → Urinogenital duct → Cloaca
Frog's heart when taken out of the body continues to beat for sometime.
Select the best option from the following statements.
I. Frog is a poikilotherm.
II. Frog does not have any coronary circulation.
III. Heart is "myogenic" in nature.
IV. Heart is autoexcitable.
(1) Only III
(2) Only IV
(3) I and II
(4) III and IV
In male cockroaches, sperms are stored in which part of the reproductive system?
(1) Seminal vesicles
(2) Mushroom glands
(3) Testes
(4) Vas deferens
Smooth muscles are
(1) involuntary, fusiform, non-striated
(2) voluntary, multinucleate, cylindrical
(3) involuntary, cylindrical, striated
(4) voluntary, spindle-shaped, uninucleate
Which of the following features is not present in Periplaneta americana?
(1) Indeterminate and radial cleavage during embryonic development
(2) Exoskeleton composed of N-acetylglucosamine
(3) Metamerically segmented body
(4) Schizocoelom as body cavity
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