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

 58%
NEET - 2017
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In male cockroaches,  sperms are stored in which part of the reproductive system?

(1) Seminal vesicles

(2) Mushroom glands

(3) Testes

(4) Vas deferens

Subtopic:  Cockroach:Male Reproductive System |
 71%
From NCERT
NEET - 2016
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Smooth muscles are 

(1) involuntary, fusiform, non-striated

(2) voluntary, multinucleate, cylindrical

(3) involuntary, cylindrical, striated

(4) voluntary, spindle-shaped, uninucleate

Subtopic:  Cardiac Muscle & Smooth Muscle |
 86%
From NCERT
NEET - 2016
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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

Subtopic:  Cockroach: Intro & External Morphology |
NEET - 2016
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The function of the gap junction is to 

1. performing cementing to keep neighbouring cells together

2. faciliate communication between adjoining cells by connecting the cytoplasm for rapid transfer of ions, small molecules and some large molecules

3. seperate two cells from each other

4. stop substance from leaking across a tissue

Subtopic:  Glandular Epithelium & Cell Junction |
 89%
From NCERT
NEET - 2015
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The terga sterna and pleura of cockroach body are joined by

1. cementing glue

2. muscular issue

3. arthrodial membrane

4. cartilage

Subtopic:  Cockroach: Intro & External Morphology |
 90%
From NCERT
NEET - 2015
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Choose the corectly matched pair.

(1) Tendon-Specialised connective tissue

(2) Adipose tissue-Dense connective tissue

(3) Areolar tissue-Loose connective tissue

(4) Cartilage-Loose connective tissue

Subtopic:  Connective Tissue |
 80%
From NCERT
NEET - 2014
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What external changes are visible after the last moult of a cockroach nymph?

1.  Mandible become harder

2.  Anal cerci develop

3.  Both fore wings and hind wings develop

4.  Labium develops

Subtopic:  Cockroach: Female Reproductive System |
 85%
From NCERT
NEET - 2013
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Select the correct statement from the ones given below with respect to Periplaneta americana.

(1) Nervous system dorsally, consists of segmentally arranged ganglia joined by a pair of longitudinal connectives

(2) Males bear a pair of short thread like anal styles

(3) There are 16 very long Malpighian tubules present at the junctions of midgut and hindgut

(4) Grinding of food is carried out only by the mouth parts

 

Subtopic:  Cockroach: Intro & External Morphology |
 76%
From NCERT
NEET - 2012
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Which of the following is correctly states as it happens in the common cockroach?

(1) Oxygen is transported by haemoglobin in blood

(2) Nitrogenous excretory product is urea

(3) The food is ground by mandibles and gizzard

(4) malpighian tubules are excretory organs projecting out from the colon

Subtopic:  Cockroach: Head & Mouth Parts |
 65%
From NCERT
NEET - 2011
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