Question

How do hagfishes and lampreys acquire their food?

6)         What is the function of slime in hagfishes?

7)         What are the three groups of fishes?

8)         Answer the following questions about chondrichthyans:

            a) What is their skeleton composed of?

            b) What do they use the lateral line system for?

            c) How do they acquire food from their environment?

            d) What are some examples?

9)         Answer the following questions about ray-finned fishes:

            a) What is their skeleton composed of?

            b) What is the operculum?

            c) What is the swim bladder used for?

            d) What are some examples and adaptations?

            e) They are most diverse group of vertebrates. True/False

10)       Answer the following questions about lobe-finned fishes:

            a) What is the key derived characteristic?

            b) What are some examples?

c) Which ones adapted to life on land?

12)       List some obstacles that animals might have faced during the transition to life on land.

13) The first vertebrates able to colonize the land are the ____________.

14) List some examples of amphibians and their characteristics.

15) Where are amphibians found?

16) Describe the ‘double life’ of amphibians – Include their development from egg to adult.

17) In what ways are amphibians not completely adapted for terrestrial life?

18) Give some examples of amniotes.

19) The amniotic egg has four membranes. List them and their functions.

20) Give some examples of reptiles and their characteristics.

21) Apart from the amniotic egg, list some adaptations that reptiles have that allow

them to live on land.

22) What is the difference between ectothermic and endothermic organisms?

23) What adaptations do birds have that enhance flight?

24) Are there some flightless birds? If so list some examples.

25) Birds have a very efficient respiratory system and circulatory system. True/False

26) Strong evidence indicates that birds evolved from two-legged dinosaurs called

___________.

27) Archaeopteryx is the oldest known most primitive bird. True/False

28) What were the functions of early feathers in birds?

29) Are birds ectothermic or endothermic?

30) Are mammals endothermic or ectothermic?

31) What are the two distinguishing traits of mammals?

32)       Mammals have an efficient respiratory and circulatory system as well as differentiated teeth. True/False

33) List the three lineages of mammals. List the order in which they evolved.

34) What are the differences between the groups of mammals?

35) List examples of animals in the above groups (questions 29 and 30).

36) Mammals underwent adaptive radiation after the dinosaurs went extinct. True/False

37) Humans are in the order ________________.

38) List the primate characteristics that are arboreal adaptations.

39) What is an opposable thumb?

40)       List the differences between New World and Old World monkeys. What are some examples of these monkeys?

41)       List the characteristics of apes (including gorillas, chimpanzees, gibbons, and orangutans).

42)       Among the apes, humans and _____________ are especially closely related sharing 99% of their genes.

43) The phylogenetic tree of primates, divides them into three main groups. Name

these groups. Give examples of members of each group, and where they are found.

Answer 1

Hagfish:--- They feed on various things like worm, dead fish(sacavanger) . They have four set of teeth made up of keratin protein for rasping and they dig into the the fish that is to be eaten with its teeth and scavange it.

Lamprey:-- They get attached to thier host and their suction mouth carrying teeth get used to suck blood from host. Okay.

Both are considered to form Cyclostomata(Circle mouth bearing organism) group of fishes.

6.) Slime in hagfishes :-- Slime is produced form hagfishe's gland and they are using it in a protective manner like just to prevent substance from chocking them.. This slimy Material gets swelled in water. This slime protects them from predators. So it was how they protect them.

7.) Three groups of fishes :--

On what basis of catagorization:-- skeleton composition, Presence of Jaw.

Jawless fishes(Aganthosmata) :-- Lamprey, hagfishes having Circle mouth with teeth and carnivores.

Ganthosmata(Jaw bearing Pisces):--

Divided into two kind:--

1. Chondrichytes:--Skeleton Made up of cartilage. Eg. Shark

2.Osteochytes:-- Skeleton made up of Bones. Eg. Labeo

8.) a) Skelton is composed of Cartilage. Cartilage is just like a bike of flexible type.

b).Shark has its all ear, nose, eye at near mouth but if something is running along the lateral sides then it has another system to cop such kind of system. This system comprises many sense organ helps in detecting pressure gradient, vibrations produced from prey .

c). They will have spiny teeth on their jaw for hunt their prey. They feel their prey with their eye, nose, ear as well as lateral line system then it will help to them to get their food..

d ). Examples are :-- Shark, Dolphins, etc.