- Tardigrada are commonly known as:
- A) Water bears
- B) Sea cucumbers
- C) Flatworms
- D) Roundworms
Answer: A) Water bears
- Tardigrades are primarily found in:
- A) Terrestrial environments
- B) Aquatic environments
- C) Both terrestrial and aquatic environments
- D) Only in extreme conditions
Answer: C) Both terrestrial and aquatic environments
- The body of a tardigrade is divided into:
- A) Segments
- B) Three main parts: head, trunk, and legs
- C) Two main parts: head and abdomen
- D) A single unsegmented body
Answer: B) Three main parts: head, trunk, and legs
- Tardigrades possess how many pairs of legs?
- A) Two
- B) Four
- C) Six
- D) Eight
Answer: B) Four
- The primary mode of nutrition in tardigrades is:
- A) Photosynthesis
- B) Carnivorous feeding
- C) Filter feeding
- D) Saprophagy
Answer: D) Saprophagy
- Tardigrades can survive extreme conditions due to a process called:
- A) Anhydrobiosis
- B) Cryobiosis
- C) Osmobiosis
- D) Hyperbosis
Answer: A) Anhydrobiosis
- Which of the following statements is TRUE about tardigrades?
- A) They have a complex circulatory system.
- B) They can withstand extreme temperatures.
- C) They are only found in freshwater.
- D) They have a well-developed respiratory system.
Answer: B) They can withstand extreme temperatures.
- Tardigrades are classified under which phylum?
- A) Arthropoda
- B) Mollusca
- C) Tardigrada
- D) Annelida
Answer: C) Tardigrada
- The reproductive strategy of tardigrades is primarily:
- A) Asexual
- B) Sexual
- C) Budding
- D) Fragmentation
Answer: B) Sexual
- Tardigrade eggs can survive:
- A) Extreme heat and cold
- B) High levels of radiation
- C) A vacuum of space
- D) All of the above
Answer: D) All of the above
- Tardigrades are characterized by a unique body covering called:
- A) Exoskeleton
- B) Cuticle
- C) Chitin
- D) Shell
Answer: B) Cuticle
- Which habitat is NOT typically associated with tardigrades?
- A) Mosses and lichens
- B) Soils
- C) Deep ocean trenches
- D) Hot springs
Answer: C) Deep ocean trenches
- Tardigrades exhibit which type of symmetry?
- A) Bilateral symmetry
- B) Radial symmetry
- C) Asymmetry
- D) None of the above
Answer: A) Bilateral symmetry
- The first tardigrade was discovered in:
- A) 1773
- B) 1850
- C) 1890
- D) 1960
Answer: A) 1773
- Tardigrades can be found in:
- A) Ice caps
- B) Deserts
- C) High altitudes
- D) All of the above
Answer: D) All of the above
- The mouth of a tardigrade is equipped with:
- A) Jaws
- B) Stylets
- C) A proboscis
- D) Mandibles
Answer: B) Stylets
- Tardigrades are known for their ability to enter a dormant state known as:
- A) Hibernation
- B) Aestivation
- C) Cryptobiosis
- D) Anhydrobiosis
Answer: C) Cryptobiosis
- The digestive system of tardigrades is:
- A) Incomplete
- B) Complete
- C) Absent
- D) Simple
Answer: B) Complete
- In terms of size, tardigrades are typically:
- A) 0.1 to 0.5 mm long
- B) 1 to 5 mm long
- C) 5 to 10 mm long
- D) 10 to 20 mm long
Answer: A) 0.1 to 0.5 mm long
- The study of tardigrades is important for understanding:
- A) Astrobiology
- B) Marine biology
- C) Environmental science
- D) All of the above
Answer: A) Astrobiology
- Which of the following organisms are closely related to tardigrades?
- A) Arthropods
- B) Nematodes
- C) Annelids
- D) Mollusks
Answer: A) Arthropods
- Tardigrades were found to survive in the vacuum of space during which mission?
- A) Apollo 11
- B) STS-115
- C) FOTON-M3
- D) Mars Exploration Rover
Answer: C) FOTON-M3
- Tardigrades primarily reproduce by:
- A) Laying eggs
- B) Live birth
- C) Fission
- D) Budding
Answer: A) Laying eggs
- The structure responsible for locomotion in tardigrades is:
- A) Cilia
- B) Legs
- C) Flaps
- D) Tentacles
Answer: B) Legs
- The habitat of tardigrades can often be found in:
- A) Snow
- B) Ocean depths
- C) Tree bark
- D) All of the above
Answer: D) All of the above
- Which environmental condition do tardigrades NOT typically withstand?
- A) High pressure
- B) Extreme radiation
- C) Lack of water
- D) Complete darkness
Answer: D) Complete darkness
- The primary role of tardigrades in ecosystems is as:
- A) Predators
- B) Decomposers
- C) Parasites
- D) Primary producers
Answer: B) Decomposers
- The excretory system of tardigrades consists of:
- A) Nephridia
- B) Malpighian tubules
- C) Glands
- D) No excretory system
Answer: D) No excretory system
- Tardigrades belong to which class?
- A) Heterotardigrada
- B) Eutardigrada
- C) Mesotardigrada
- D) All of the above
Answer: D) All of the above
- Which of the following is a significant adaptation of tardigrades?
- A) Ability to photosynthesize
- B) Tolerance to desiccation
- C) Formation of hard shells
- D) Complex social behavior
Answer: B) Tolerance to desiccation