What is incorrect regarding Periplaneta americana?

1. Excretion by malpighian tubules

2. Hemolymph delivering oxygen to tissues

3. Paurometabolous development

4. Mosaic vision

The type of cartilage present in the epiglottis, pinna and tip of the nose is:

(1) Elastic

(2) Hyaline

(3) Fibrous

(4) Calcified

Which of the following does not help in excretion in Periplaneta Americana?

1. Fat body

2. Urecose glands

3. Nephrocytes

4. None of these

Dense irregular connective tissue is present in:

1. Tendons

2. Ligaments

3. Skin

4. Cartilage

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