Tag: circulatory system in frog

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Multiple choice zoology frog circulatory system in frog frog - digestive system, circulatory system, excretory system and reproductive system animal diversity - ii (phylum: chordata)

It opens into right auricle in frog heart Coronary sinus _______________.

  1. Drains impure blood from pulmonary veins to left auricle

  2. Receives impure blood from heart musculature via coronary veins

  3. Drains pure blood in right auricle

  4. More than one options are correct
Reveal answer Fill a bubble to check yourself
A Correct answer
Multiple choice zoology frog circulatory system in frog frog - digestive system, circulatory system, excretory system and reproductive system animal diversity - ii (phylum: chordata)

Compared to those of humans, erythrocytes of Frog are

  1. With nucleus but without haemoglobin

  2. Nucleated and with haemoglobin

  3. Smaller and fewer

  4. Without nucleus but with haemoglobin.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Unlike human erythrocytes, which are non-nucleated, frog erythrocytes are nucleated and contain hemoglobin for oxygen transport.

Multiple choice zoology frog circulatory system in frog frog - digestive system, circulatory system, excretory system and reproductive system animal diversity - ii (phylum: chordata)

The venous system of frog differs from that of a mammals in the presence of

  1. Renal portal system

  2. Hepatic portal system

  3. Three superior venacava

  4. Hepatic vein
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The renal portal system is involved in the function to move blood from the renal glomeruli to the peritubular plexus that surround the proximal and distal convoluted tubules. The renal portal system is found only in fishes, amphibians, reptiles and birds. Thus, mammals have no renal portal system. 

So, the correct answer is option A.

Multiple choice zoology animal diversity - ii (phylum: chordata) circulatory system in frog frog - digestive system, circulatory system, excretory system and reproductive system frog

Ureotelic vertebrates are?

  1. Fish

  2. Reptiles and cartilaginous fish

  3. Bony fish and mammals

  4. Amphibians; mammals, cartilaginous fish
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The excretion of urea is called ureotelism. Land animals, mainly amphibians mammals, convert ammonia into urea. These animals are called ureotelic. Urea is a less toxic compound than ammonia. Eg marine fishes, many amphibians etc.


So the correct option is "amphibian, mammals, cartilaginous fish".

Multiple choice zoology animal diversity - ii (phylum: chordata) circulatory system in frog frog - digestive system, circulatory system, excretory system and reproductive system frog

Nictitating membrane is an example of

  1. Analogous structures

  2. Homologous structures

  3. Vestigeal structures

  4. All
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Nictitating membrane (Third eyelid or Plica semilunaris). It is thin, transparent and freely movable fold which is used to clean cornea in frog, pigeon, apes etc.

Multiple choice zoology animal diversity - ii (phylum: chordata) circulatory system in frog frog - digestive system, circulatory system, excretory system and reproductive system frog

In a uriniferous tubule, what is the short and tubular region, that follows the Bowman's capsule known as?

  1. Neck

  2. Proximal convoluted tubule

  3. Henle's loop

  4. Distal convoluted tubule
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

In a uriniferous tubule, 'Henle's loop' is the short and tubular region, that follows the Bowman's capsule.

So, the correct option is 'Henle's loop'.

Multiple choice zoology frog circulatory system in frog frog - digestive system, circulatory system, excretory system and reproductive system animal diversity - ii (phylum: chordata)

Select the correct option:

Fill up the blanks in the following paragraph by selecting the correct option.
The vascular system of frog is well-developed ______ (i) type. The blood vascular system involves heart, blood vessels and blood. Heart has 3 chambers, two atria and one ventricle and is covered by a membrane called ______ (ii). A triangular structure called ______ (iii) joins the right attrium.

  1. (i)- open; (ii)- conus arteriosus; (iii)- neurilemma

  2. (i)- closed; (ii)- sinus venosus; (iii)- pericardium

  3. (i)- open; (ii)- neurilemma; (iii)- conus arteriosus

  4. (i)- closed ; (ii)- pericardium; (iii)- sinus venosus
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The vascular system of frog is well-developed (i) 'closed' type. The blood vascular system involves the heart, blood vessels and blood. The heart has 3 chambers, two atria and one ventricle and is covered by a membrane called (ii) 'pericardium'. A triangular structure called (iii) 'sinus venosus' joins the right atrium.

So, the correct answer is '(i)- closed ; (ii)- pericardium; (iii)- sinus venosus'.