Single Circulation

Q. Which of the following events do not occur during joint diastole?

(I) All four–chambers are in relaxed state

(II) Tricuspid and bicuspid are open

(III) Semilunar valves are closed

(IV) Blood from the pulmonary veins and vena cava flows into the left and right ventricles, respectively through the left and right atria

1. 
   Only I
2. 
   Only II
3. 
   II and IV
4. 
   None of these

Q.

What is joint diastole?

Q.

Four-chambered heart is a characteristic of which reptile?

Q.

“Columns of Bertini” in the kidney of mammals are formed as the extension of

1. Cortex into medulla

2. Medulla into pelvis

3. Pelvis into ureter

4. Medulla into cortex

Q. Choose the correct sequence of events in the cardiac cycle:
I. Ventricular systole
II. Blood reaches ventricles
III. A-V valves closes
IV. Atrial systole
V. Semilunar valve closes
VI. Blood goes to major arteries
VII. Semilunar valve opens
VII. Ventricular diastole

1. IV→II→I→III→VII→VI→VIII→V
2. I→II→III→IV→V→VI→VII→VIII
3. IV→II→VIII→VI→VII→IV→V→III
4. I→II→III→IV→V→VI→VII→VIII

Q. Amphibians, reptiles, aves and mammals are

1. apods.
2. anamniotes.
3. tetrapods.
4. lower vertebrates.

Q.

The glomerulus is present in

1. Renal cortex

2. Renal medulla

3. Renal pelvis

4. Renal pyramid

Q.

How does decreased cardiac output affect the kidneys?

Q. How does the heart function?

Q.

Differentiate between the following pair on the basis of what is mentioned in bracket:

(i) Renal cortex and renal medulla [parts of the nephrons present].

Q. Oval, biconvex and nucleated RBC's are found in

1. Camel
2. Rabbit
3. Man
4. Rat

Q. The process to employ artificial arteries is called as

1. Vascular graft
2. Crown graft
3. Bud graft
4. None of the above

Q. The two chambered heart is observed in

1. fishes
2. lizards
3. frogs
4. crocodile

Q. Four chambered heart is present in

1. Frog
2. Crocodile
3. Lizard
4. Shark

Q. Which one is present in tunica media?

1. Collagen fibres and smooth muscles
2. Yellow fibres and striated muscles
3. Squamous epithelium and striated muscles.
4. Yellow fibres and smooth muscles

Q. Which of the following has a three-chambered heart?

Q.

Blood enters into heart due to

1. Contraction of atrium

2. relaxation of atrium

3. contraction of ventricle

4. relaxation of ventricle

Q. Only vertebrates to lack epidermal scales are

1. Fishes
2. Reptiles
3. Bird
4. Mammals

Q.

Heart of crocodile is

1. Four chambered

2. Single chambered

3. Two chambered

4. Three chambered

Q. State the following statement true or false:

1. True
2. False

Q.

Identify error in the given statement:

Two types of blood vessels are present in the body.

Q. Which of the following fishes have homocercal tail?

1. Teleosts
2. Torpedo
3. Sharks
4. Rays

Q. Answer the following very briefly:
Why should the blood that goes away from the stomach and intestines pass through the liver and not directly to the heart?

Q. Name on animal having single circulation of blood and another having double circulation.

Q. The two chambered heart is observed in

1. lizards
2. frogs
3. crocodile
4. fishes

Q. Choose the correct answer from the alternatives given.
In a closed circulatory system, blood is completely enclosed within:

1. Heart
2. Vessels
3. Sinuses
4. Coelom

Q. Antedon is member of the class

1. Echinoidea
2. Asteroidea
3. Crinoidea
4. Ophiuroidea

Q. Give reasons:
Blood goes only once in one cycle through the heart in fishes.

Q. Which of the following characteristics in birds indicates their reptilian ancestry?

1. Eggs with a calcareous shell
2. Scales on their hind limbs
3. Four-chambered heart
4. Two special chambers crop and gizzard in their digestive tract

Q. All the limbs of a tetrapod are nearly equal in size and similar in shape with a membraneous skin between the fingers. What would be the chief method of movement?

1. Gliding
2. Jumping
3. Crawling
4. Flying