MCQ Bank
Among arachnids (spiders, scorpions, ticks, mites) __________are glands for collecting and excreting urine?
- A) Green gland
- B) Coxal glands
- C) Malphigian tubes
- D) Nephridia
Diving reptiles (sea turtles, sea snakes) conserve body heat by routing blood through:
- A) Rete mirabile
- B) Minimizing blood supply to the skin
- C) Circulatory shunts (an alternative path for the passage of the blood)
- D) Migrating to the surface waters of the seas
The excretory system of ___________includes protonephridia in larval stages and metanephridia in adults?
- A) Annelida
- B) Nematodes
- C) Arthropoda
- D) Molluscs
What is the cooling mechanism in birds?
- A) Gular pouch
- B) Sweat glands
- C) Panting
- D) Feathers
When the temperature rises above the temperature optima the rate metabolism declines because________.
- A) Enzymes begin to denature
- B) Kinetic energy speeds up
- C) Movement of molecules increase
- D) pH is disturbed
What acts as a natural evaporative cooling system in Amphibians?
- A) All
- B) Lungs
- C) Skin
- D) Mouth cavity
All are osmoconformers except
- A) Salmon
- B) Hagfish
- C) Skates
- D) Sharks
In Turbellarins, the chief nitrogenous waste that diffuses out into surrounding water is the_____________.
- A) Ammonia
- B) Uric acid
- C) Urea and ammonia
- D) Urea
The protonephridia are the simplest among nephridia. These are found in all the following except____________.
- A) Flatworms
- B) Larval molluscs
- C) Rotifers
- D) Larval insects
Bats and humming birds are categorized as ______________.
- A) Endotherms
- B) Homeotherms
- C) Heterotherms
- D) Ectotherms
Aestivation is characterized by inactivity in response to high temperatures and arid conditions. Which animals go for aestivation?
- A) Crocodiles and Salamanders
- B) Frogs and toads
- C) Ground squirrels and bats
- D) Polar bears
Tortoises and land turtles cool themselves through the following different ways except:
- A) Moistening the eyes, and panting
- B) Immersing in water
- C) Salivating and frothing at the mouth
- D) Urinating on the back legs
Following are antifreeze materials found in fishes except:
- A) Albumin protein
- B) Certain glycopeptides
- C) Sorbitol
- D) Glycerol
Which of the following statement is incorrect about amphibians?
- A) Surrounding medium of most the amphibians is air as well as water.
- B) Face marked daily and seasonal temperature changes.
- C) Their body temperatures vary with external temperatures, i.e. they are ectothems.
- D) They can bear the freezing temperature because of antifreeze substances.
Animals who has limited distribution is due to the fact that they are____________
- A) Terrestrial
- B) Marine/aquatic
- C) Osmoregulators
- D) Osmoconformers
Insects have an excretory system made up of the gut and ________________attached to the gut?
- A) Green Gland
- B) Nephridia
- C) Gills
- D) Malpighian tubules
Which of the following activities is involuntary?
- A) Running
- B) Shivering
- C) Flying
- D) Jumping
Camels are well adapted for survival in the desert. Their adaptations include all except_______________.
- A) Thick fur on the top of the body
- B) Thin fur elsewhere to allow easy heat loss
- C) Urination on feet
- D) Large, flat feet
Cooling mechanism in birds is ________
- A) Feathers
- B) Gular pouch
- C) Panting
- D) Sweat glands
In vertebrates excess nitrogen is produced in the form of the following compounds except___________
- A) Urea and uric acid.
- B) Ammonia
- C) Creatinine
- D) Nitric oxide