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

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'.

Multiple choice zoology animal diversity - ii (phylum: chordata) vertebrates characteristics of vertebrates classification of organisms

Find the incorrect statement.

  1. Lymphatic system is present in vertebrates and lymph is finally carried to the veins

  2. All vertebrates have a single heart, enclosed in pericardium

  3. Heart of fish receives only venous blood which is pumped into lungs for oxygenation

  4. Reptilian heart is arteriovenous heart that shows incomplete double circulation
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Statement A is correct, but the question asks for the incorrect statement. Statement B is incorrect because while most vertebrates have a heart, the number of chambers varies significantly (e.g., fish have two, amphibians three, birds/mammals four), and the term single heart is misleading in the context of evolutionary complexity.