Cold blood

Question 1

1. Vertebrates

Answer 1

Vertebrates comprise all species of animals within the subphylum Vertebrata, including all mammals, birds, reptiles, amphibians, and fish.

Question 2

2. Endotherm

Answer 2

An endotherm is an organism that maintains its body at a metabolically favorable temperature, largely by the use of heat released by its internal bodily functions instead of relying almost purely on ambient heat.

Question 3

3. Ectotherm

Answer 3

An ectotherm is an organism in which internal physiological sources of heat are of relatively small or of quite negligible importance in controlling body temperature.

Question 4

4. Lateral Line

Answer 4

The lateral line, also called lateral line system or lateral line organ, is a system of sensory organs found in fish, used to detect movement, vibration, and pressure gradients in the surrounding water.

Question 5

5. Gill

Answer 5

A gill is a respiratory organ that many aquatic organisms use to extract dissolved oxygen from water and to excrete carbon dioxide. The gills of some species, such as hermit crabs, have adapted to allow respiration on land provided they are kept moist.

Question 6

6. Jawless fishes

Answer 6

Agnatha is an infraphylum of jawless fish in the phylum Chordata, subphylum Vertebrata, consisting of both present and extinct species.

Question 7

7. Cartilaginous fishes

Answer 7

Chondrichthyes is a class that contains the cartilaginous fishes that have skeletons primarily composed of cartilage.

Question 8

8. Bony fishes

Answer 8

Osteichthyes, popularly referred to as the bony fish, is a diverse taxonomic group of fish that have skeletons primarily composed of bone tissue.

Question 9

9. Swim bladder

Answer 9

The swim bladder, gas bladder, fish maw, or air bladder is an internal gas-filled organ that contributes to the ability of many bony fish to control their buoyancy, and thus to stay at their current water depth without having to expend energy in swimming.

Question 10

10. Lung

Answer 10

The lungs are a pair of spongy, air-filled organs located on either side of the chest (thorax). The trachea (windpipe) conducts inhaled air into the lungs through its tubular branches, called bronchi.

Question 11

11. Tadpole

Answer 11

tadpole, also called polliwog, aquatic larval stage of frogs and toads. Compared with the larvae of salamanders, tadpoles have short, oval bodies, with broad tails, small mouths, and no external gills. The internal gills are concealed by a covering known as an operculum.

Question 12

12. Metamorphosis

Answer 12

Metamorphosis is an allegorical novella written by Franz Kafka which was first published in 1915.

Question 13

13. Caecilians

Answer 13

Caecilians are a group of limbless, vermiform or serpentine amphibians. They mostly live hidden in the ground and in stream substrates, making them the least familiar order of amphibians. Caecilians are mostly distributed in the tropics of South and Central America, Africa, and southern Asia

Question 14

14. Salamanders

Answer 14

Salamanders are a group of amphibians typically characterized by their lizard-like appearance, with slender bodies, blunt snouts, short limbs projecting at right angles to the body, and the presence of a tail in both larvae and adults. All ten extant salamander families are grouped together under the order Urodela.

Question 15

15. Frogs

Answer 15

A frog is any member of a diverse and largely carnivorous group of short-bodied, tailless amphibians composing the order Anura.