- What is the primary habitat of Bdelloidea?
- A) Marine
- B) Freshwater
- C) Terrestrial
- D) Brackish water
Answer: B) Freshwater
- Bdelloidea belong to which larger group of organisms?
- A) Annelids
- B) Rotifera
- C) Cnidarians
- D) Arthropods
Answer: B) Rotifera
- Which of the following is a defining characteristic of Bdelloidea?
- A) Sexual reproduction
- B) Asexual reproduction
- C) Presence of a foot
- D) Segmented body
Answer: B) Asexual reproduction
- What is the primary mode of locomotion for Bdelloidea?
- A) Crawling
- B) Ciliary movement
- C) Swimming using flagella
- D) Floating passively
Answer: B) Ciliary movement
- What type of symmetry do Bdelloidea typically exhibit?
- A) Radial symmetry
- B) Bilateral symmetry
- C) Asymmetry
- D) Pentaradial symmetry
Answer: B) Bilateral symmetry
- Which of the following structures do Bdelloidea use for feeding?
- A) Tentacles
- B) Ciliated corona
- C) Specialized jaws
- D) Siphons
Answer: B) Ciliated corona
- Which of the following is true about the reproductive strategy of Bdelloidea?
- A) They are obligate sexual reproducers
- B) They reproduce primarily through parthenogenesis
- C) They reproduce only through fragmentation
- D) They can reproduce only during certain seasons
Answer: B) They reproduce primarily through parthenogenesis
- Which of the following genera is classified under Bdelloidea?
- A) Brachionus
- B) Adineta
- C) Asplanchna
- D) Monostyla
Answer: B) Adineta
- What is a unique feature of the Bdelloidea life cycle?
- A) Direct development
- B) Ability to survive desiccation
- C) Presence of larval stages
- D) Continuous reproduction
Answer: B) Ability to survive desiccation
- What ecological role do Bdelloidea typically play?
- A) Primary producers
- B) Consumers and decomposers
- C) Predators
- D) Keystone species
Answer: B) Consumers and decomposers
- Which type of feeding mechanism do Bdelloidea utilize?
- A) Absorptive feeding
- B) Filter feeding
- C) Predatory feeding
- D) Grazing
Answer: B) Filter feeding
- What kind of body plan do Bdelloidea exhibit?
- A) Segmented
- B) Unsegmented
- C) Radially symmetrical
- D) Pseudocoelomate
Answer: B) Unsegmented
- Bdelloidea are often found in which type of environments?
- A) Alkaline lakes
- B) Moist terrestrial habitats
- C) Deep-sea environments
- D) Coral reefs
Answer: B) Moist terrestrial habitats
- Which of the following statements about Bdelloidea is true?
- A) They are exclusively marine organisms
- B) They have a unique ability to withstand desiccation
- C) They possess complex nervous systems
- D) They are obligate parasites
Answer: B) They have a unique ability to withstand desiccation
- What is the primary function of the foot in Bdelloidea?
- A) Locomotion
- B) Attachment to substrates
- C) Feeding
- D) Excretion
Answer: B) Attachment to substrates
- What type of sensory structures do Bdelloidea possess?
- A) Compound eyes
- B) Sensory bristles
- C) Tentacles
- D) Antennae
Answer: B) Sensory bristles
- Which type of reproduction can occur in Bdelloidea?
- A) Only sexual reproduction
- B) Asexual reproduction through parthenogenesis
- C) Budding only
- D) No reproduction
Answer: B) Asexual reproduction through parthenogenesis
- What feature distinguishes Bdelloidea from other rotifers?
- A) Their color
- B) Their ability to reproduce asexually
- C) Their size
- D) Their feeding habits
Answer: B) Their ability to reproduce asexually
- What type of larvae do Bdelloidea produce?
- A) Directly developed larvae
- B) Free-swimming larvae
- C) Non-motile larvae
- D) Cystic larvae
Answer: B) Free-swimming larvae
- In terms of ecological roles, Bdelloidea primarily serve as what?
- A) Predators
- B) Prey for larger organisms
- C) Primary producers
- D) Decomposers only
Answer: B) Prey for larger organisms
- Which of the following is NOT a characteristic of Bdelloidea?
- A) Presence of cilia
- B) Exclusively marine
- C) Freshwater habitats
- D) Simple body structure
Answer: B) Exclusively marine
- What do Bdelloidea feed on?
- A) Larger zooplankton
- B) Microorganisms and organic particles
- C) Plant material
- D) Sediment
Answer: B) Microorganisms and organic particles
- Which class of Rotifera does Bdelloidea belong to?
- A) Bdelloidea
- B) Monogononta
- C) Digononta
- D) Seisonidea
Answer: A) Bdelloidea
- What is the main advantage of the ability to withstand desiccation in Bdelloidea?
- A) Increased feeding efficiency
- B) Survival during unfavorable conditions
- C) Enhanced locomotion
- D) Greater reproductive success
Answer: B) Survival during unfavorable conditions
- What type of circulatory system do Bdelloidea have?
- A) Open circulatory system
- B) Closed circulatory system
- C) No circulatory system
- D) Simple vascular system
Answer: C) No circulatory system
- How do Bdelloidea contribute to nutrient cycling in their environment?
- A) By consuming large organisms
- B) By breaking down organic matter
- C) By producing nutrients
- D) By forming symbiotic relationships
Answer: B) By breaking down organic matter
- What type of habitat is most conducive for Bdelloidea?
- A) Polluted waters
- B) Clean, moist environments
- C) Stagnant waters
- D) Alkaline lakes
Answer: B) Clean, moist environments
- Bdelloidea are often studied in relation to which of the following fields?
- A) Botany
- B) Microbiology
- C) Genetics
- D) Ornithology
Answer: B) Microbiology
- Which of the following adaptations helps Bdelloidea survive in their environment?
- A) Large size
- B) Ability to enter a cryptobiotic state
- C) Complex behavior
- D) Fast swimming ability
Answer: B) Ability to enter a cryptobiotic state
- What is the primary mode of nutrition in Bdelloidea?
- A) Photosynthesis
- B) Heterotrophic feeding
- C) Chemosynthesis
- D) Absorptive feeding
Answer: B) Heterotrophic feeding