Exchange of Gases in Frogs

Q. The thoracic chamber is formed dorsally by the ___A___, ventrally by the ___B___, laterally by the ___C___ and on lower side by the dome-shaped ___D___.
Select the right choices for A, B, C and D.

1. A-vertebral column, B-sternum, C-ribs, D-diaphragm
2. A-vertebral column, B-ribs, C-sternum, D-diaphragm
3. A-diaphragm, B-ribs, C-sternum, D-vertebral column
4. A-ribs, B-diaphragm, C-sternum, D-vertebral column

Q. Which of the following organism(s) can perform cutaneous respiration?

1. Earthworm
2. Frog
3. Leeches
4. All of the above

Q. Why does frogs do not drink water but absorb through their skin?

Q.

What helps frogs to breathe underwater?

Q.

The skin is an accessory organ of respiration in __.

Q.

Which animal respire through trachea?

Q. Which of these are the respiratory devices found in adult frogs?
i) Skin
ii) Gills
iii) Book lungs
iv) Lungs
v) Buccopharyngeal cavity

1. I, IV, and V only
2. IV only
3. I, II, and III only
4. I and IV only

Q.

How does respiration take place in phylum Arthropoda?

Q.

Respiratory organ present in spider is

1. Skin

2. Gills

3. Book lungs

4. All of these

Q.

Which group among chordates has multiple organs for respiration?

1. Urochordates

2. Amphibians

3. Mammals

4. Cyclostomates

Q. The term respiration was given by

1. Lavosier
2. Dutrochet
3. Sachs
4. Krebs

Q.

Which chamber of human heart has thickest muscular wall

1. right atrium

2. left atrium

3. left ventricle

4. right ventricle

Q.

Mark ‘T’ if the statement is true and ‘F’ if it is false:

Frogs breathe through their skins as well as their lungs.

1. True
2. False

Q. Spot the incorrect statement.

1. Frogs respire through skin and lungs
2. Cockroaches have blood that helps primarily in gaseous transport
3. Fishes have counter-current exchange of gases
4. Molluscs use gills whereas earthworms use moist skin for respiration

Q.

A doubled walled protective sac called the _________________encloses the heart.

Q.

Mammalian heart is enclosed by

1. Perichondrium

2. Periosteum

3. No membrane

4. Pericardium

Q. Round worms differ from flatworms in having

1. Pseudocoelom
2. Circulatory system
3. Longitudinal nerve cords
4. Flame cells

Q. Peripatus is a connecting link between Annelida and Arthropoda. In addition the other character of zoological importance in this animal is ?

1. Habitat
2. Living fossil
3. Jointed legs
4. Distribution

Q. The organs of gaseous exchange in Amphitrite is/are

1. trachea
2. general body surface
3. book lungs
4. external gills

Q. Mark the incorrectly matched pair –

1. Petromyzon - Body devoid of scales and paired fins
2. Exocoetus - Heart two chambered with sinus venous
3. Scoliodon - Operculum present but air bladder is absent
4. Rana - Cold blooded with $10$ pairs of cranial nerves and mesonephric kidneys

Q.

Explain the significance of 3 and 3 1/2 chambered heart in amphibians and reptiles respectively.

Q. Flame cells are excretory organs of

1. Leech
2. Taenia and other platyhelminthes
3. Amphioxus
4. All of the above

Q. Skin is an accesory organ of respiratory in.

1. Humans
2. Frog
3. Rabbit
4. Lizard

Q. A type of respiration in frog in which the external areas remain open

1. Cutaneous
2. Buccopharyngeal
3. Pulmonary
4. All the above

Q. Which of the following is not released by pars distalis, in frog?

1. MSH
2. LH
3. Prolactin
4. GH

Q. The most important respiratory organ of frog is

1. Buccopharyngeal cavity
2. Lung
3. Gills
4. Skin

Q. Oxygenation of blood occurs through moist skin in.

1. Squid
2. Earthworm
3. Octopus
4. Doris

Q.

1. buccal respiration does not stop
2. pulmonary respiration occurs
3. it can store oxygen for future use
4. respiration other than lungs will continue

Q. The epithelial lining the alveoli of the frog's lungs facing lung cavity is _______________.

1. Columnar, non-ciliated
2. Columnar, ciliated
3. Squamous ciliated
4. Squamous, non-ciliated

Q. MSH is secreted by

1. Anterior lobe of pituitary
2. Middle lobe of pituitary
3. Posterior lobe of pituitary
4. Endostyle