Tag: animal diversity - ii (phylum: chordata)

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Questions Related to animal diversity - ii (phylum: chordata)

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

Velocity of conduction of nerve impulse in frog is ________________.

  1. Faster than sound

  2. 30 metro per second

  3. 300 metro per second

  4. None of these
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The velocity of nerve impulse conduction in a frog is significantly slower than 30 m/s, typically ranging around 20-30 m/s depending on the nerve fiber type. Since 30 m/s is a specific value but often cited as an approximation, 'None of these' is technically correct if the exact value is not listed.

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

What is correct?

  1. Rabbit has renal portal system only

  2. Frog has renal portal system only

  3. Rabbit has both renal and hepatic systems

  4. Frog has both renal and hepatic portal systems.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Frogs possess both a renal portal system (blood from hind limbs to kidneys) and a hepatic portal system (blood from gut to liver), which is a standard feature of amphibian anatomy.

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

Mixing of oxygenated and deoxygenated blood occurs in the ventricle of

  1. Scoliodon

  2. Frog

  3. Rabbit

  4. Pigeon.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The frog heart has a single ventricle where oxygenated blood from the left atrium and deoxygenated blood from the right atrium mix before being pumped to the body.

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.