Animal Growth and Development

What is the purpose of ecdysis in the growth process of certain animals?

To replace the hardened outer layer with a new one

What is the main function of the cuticle?

To restrict growth

Which phylum is represented by Roundtable?

Panarthropoda

What is the characteristic shape of Nematoda?

Tapered at both ends Signup and view all the answers

What is the mode of transmission of Filarial?

Through mosquitoes Signup and view all the answers

What is the primary function of spines in Kinorhyncha?

Locomotion, chemoreception, and mechano-reception Signup and view all the answers

What is unique about the life cycle of Loricifera?

It is spent entirely in permanently anoxic sediments Signup and view all the answers

What is the habitat of Kinorhynca?

Interstitial spaces within sand grains Signup and view all the answers

What is the primary characteristic of Tardigrada that allows them to survive extreme conditions?

Their ability to enter a state of cryptobiosis Signup and view all the answers

Who settled on C. elegans as a model organism?

Sydney Brenner Signup and view all the answers

What is the function of the cuticle in Onychophora?

Regulating growth and molting Signup and view all the answers

What is the advantage of C. elegans for genetic analysis?

Rapid life cycle, small size, and ease of laboratory cultivation Signup and view all the answers

What is the typical habitat of Onychophora?

Moist, leafy rainforests Signup and view all the answers

What is the significance of the Columbia space shuttle disaster in the context of C. elegans?

C. elegans survived the disaster Signup and view all the answers

What is the name of the hormone that regulates molting in Onychophora?

Ecdysone Signup and view all the answers

What is the main reason C. elegans is one of the most studied animals?

Its potential for genetic analysis Signup and view all the answers

What is the name of the nematode that inhabits the human lymph system?

Filarial worm Signup and view all the answers

Why was C.elegans chosen as a model organism for genetic analysis?

Because it has a rapid life cycle and small size Signup and view all the answers

What is the purpose of sending live samples of C.elegans to the International Space Station?

To study the effects of zero gravity on muscle development Signup and view all the answers

What is the name of the phylum that includes velvet worms and penis worms?

Panarthropoda Signup and view all the answers

What is the unique feature of the head of Priapulida?

A circle of spines Signup and view all the answers

What is the environment where Loricifera are found?

Marine sediment Signup and view all the answers

What adaptation do Loricifera have to survive in anoxic conditions?

All of the above Signup and view all the answers

What is the unique feature of Tardigrada's metabolism?

Obligate anaerobic metabolism Signup and view all the answers

What is the maximum temperature that Tardigrada can survive?

-272 degrees Celsius Signup and view all the answers

What is the unique feature of Onychophora's body?

A soft, thin cuticle Signup and view all the answers

What is the habitat of Onychophora?

Moist, leafy rainforest habitats Signup and view all the answers

What is the unique feature of Tardigrada's survival?

They can survive in a complete vacuum and extreme temperatures Signup and view all the answers

What is the unique feature of Priapulida's habitat?

They are found in intertidal zones to deep ocean floors Signup and view all the answers

What is the unique feature of Loricifera's discovery?

They were discovered in 1983 Signup and view all the answers

What is the primary function of the hormone ecdysone in certain animals?

To stimulate molting and replacement of the cuticle Signup and view all the answers

Which of the following is a characteristic of the nematode C. elegans?

It has a rapid life cycle and is easy to cultivate in a laboratory Signup and view all the answers

What is the primary role of the cuticle in certain animals?

To restrict growth and require periodic molting Signup and view all the answers

Which of the following is a reason why C. elegans is one of the most studied animals?

It is a model organism for genetic analysis due to its rapid life cycle and ease of cultivation Signup and view all the answers

What is the primary habitat of Kinorhynca?

Interstitial spaces within sand grains Signup and view all the answers

What is the mode of transmission of Filarial?

Through the bite of infected mosquitoes Signup and view all the answers

Which of the following is a characteristic of Panarthropoda?

It includes a phylum that is represented by the Knights of the Round Table Signup and view all the answers

What is the significance of the Columbia space shuttle disaster in the context of C. elegans?

It led to the launch of C. elegans into space on the penultimate space shuttle mission Signup and view all the answers

What is the primary characteristic of Nematoda?

They are tapered at both ends Signup and view all the answers

What is the primary role of ecdysis in the growth process of certain animals?

To replace the cuticle and allow for further growth Signup and view all the answers

What is the primary function of the proboscis in Priapulida?

Feeding Signup and view all the answers

What is the unique feature of the life cycle of Tardigrada?

They are found in every habitat in the world Signup and view all the answers

What is the function of the tubercles in Onychophora?

Sensory reception Signup and view all the answers

What is the primary characteristic of Kinorhyncha?

They have a retractile head with spines Signup and view all the answers

What is the significance of C. elegans in scientific research?

It has a rapid life cycle and is easy to cultivate in a laboratory Signup and view all the answers

What is the unique feature of Priapulida's head?

Circle of spines Signup and view all the answers

What is the unique feature of Loricifera's habitat?

They are found in deep hypersaline anoxic basins Signup and view all the answers

What is the characteristic of Loricifera that allows them to survive in anoxic conditions?

Anaerobic metabolism Signup and view all the answers

What is the function of the cuticle in Onychophora?

It restricts growth and must be molted Signup and view all the answers

What is the maximum temperature range that Tardigrada can survive?

From -149°C to -272°C Signup and view all the answers

What is the primary function of the spines in Kinorhyncha?

Locomotion Signup and view all the answers

What is the habitat of Onychophora?

Moist, leafy rainforest habitats Signup and view all the answers

What is the unique feature of Tardigrada's metabolism?

It is obligately anaerobic Signup and view all the answers

What is the primary characteristic of Priapulida?

They are found in marine sediments Signup and view all the answers

What is the number of species described in Loricifera?

35 species Signup and view all the answers

What is the unique feature of Tardigrada's desiccation survival?

Surviving 120 years on dry moss Signup and view all the answers

What is the unique feature of Onychophora's body?

Soft, thin cuticle Signup and view all the answers

What is the environment where Priapulida are found?

Intertidal zones to deep ocean floors Signup and view all the answers

What is the unique feature of Loricifera's life cycle?

Spent entirely in permanently anoxic sediments Signup and view all the answers

What is the number of species described in Tardigrada?

800 species Signup and view all the answers

Animal Growth and Development

Questions and Answers

What is the purpose of ecdysis in the growth process of certain animals?

What is the main function of the cuticle?

Which phylum is represented by Roundtable?

What is the characteristic shape of Nematoda?

What is the mode of transmission of Filarial?

What is the primary function of spines in Kinorhyncha?

What is unique about the life cycle of Loricifera?

What is the habitat of Kinorhynca?

What is the primary characteristic of Tardigrada that allows them to survive extreme conditions?

Who settled on C. elegans as a model organism?

What is the function of the cuticle in Onychophora?

What is the advantage of C. elegans for genetic analysis?

What is the typical habitat of Onychophora?

What is the significance of the Columbia space shuttle disaster in the context of C. elegans?

What is the name of the hormone that regulates molting in Onychophora?

What is the main reason C. elegans is one of the most studied animals?

What is the name of the nematode that inhabits the human lymph system?

Why was C.elegans chosen as a model organism for genetic analysis?

What is the purpose of sending live samples of C.elegans to the International Space Station?

What is the name of the phylum that includes velvet worms and penis worms?

What is the unique feature of the head of Priapulida?

What is the environment where Loricifera are found?

What adaptation do Loricifera have to survive in anoxic conditions?

What is the unique feature of Tardigrada's metabolism?

What is the maximum temperature that Tardigrada can survive?

What is the unique feature of Onychophora's body?

What is the habitat of Onychophora?

What is the unique feature of Tardigrada's survival?

What is the unique feature of Priapulida's habitat?

What is the unique feature of Loricifera's discovery?

What is the primary function of the hormone ecdysone in certain animals?

Which of the following is a characteristic of the nematode C. elegans?

What is the primary role of the cuticle in certain animals?

Which of the following is a reason why C. elegans is one of the most studied animals?

What is the primary habitat of Kinorhynca?

What is the mode of transmission of Filarial?

Which of the following is a characteristic of Panarthropoda?

What is the significance of the Columbia space shuttle disaster in the context of C. elegans?

What is the primary characteristic of Nematoda?

What is the primary role of ecdysis in the growth process of certain animals?

What is the primary function of the proboscis in Priapulida?

What is the unique feature of the life cycle of Tardigrada?

What is the function of the tubercles in Onychophora?

What is the primary characteristic of Kinorhyncha?

What is the significance of C. elegans in scientific research?

What is the unique feature of Priapulida's head?

What is the unique feature of Loricifera's habitat?

What is the characteristic of Loricifera that allows them to survive in anoxic conditions?

What is the function of the cuticle in Onychophora?

What is the maximum temperature range that Tardigrada can survive?

What is the primary function of the spines in Kinorhyncha?

What is the habitat of Onychophora?

What is the unique feature of Tardigrada's metabolism?

What is the primary characteristic of Priapulida?

What is the number of species described in Loricifera?

What is the unique feature of Tardigrada's desiccation survival?

What is the unique feature of Onychophora's body?

What is the environment where Priapulida are found?

What is the unique feature of Loricifera's life cycle?

What is the number of species described in Tardigrada?

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