Animal Kingdom

Question 1

name all the phylum of animal kingdom.

Answer 1

• porifera
• cnidaria/coelenterate
• ctenophore
• Platyhelminthes
• ascelminthes
• Annelida
• Arthropoda
• Mollusca
• Echinodermata
• hemichordates
• chordates

Question 2

what is metazoa?

Answer 2

multicellular eukaryotic cell with holozoic nutrition

Question 3

types of metazoa and their range

Answer 3

parazoa- cellular level (porifera)

eumetazoa- tissue, organ and organ system level (coelenterate to chordate)

Question 4

type of organization in porifera

Answer 4

cellular

Question 5

tissue level type of organization is in ?

Answer 5

coelenterate, ctenophore

Question 6

organ level type of organization is in ?

Answer 6

platyhelmintes

Question 7

organ system type of organization is in ?

Answer 7

asccelmintes -chordates

Question 8

types of digestion system and range

Answer 8

incomplete ( blind sac body plan) - mouth and anus same hole (coelenterates to Platyhelminthes )
complete (tube within tube)-mouth and anus diff hole(achelminthes - chordata )

Question 9

types of circulatory system and range

Answer 9

open - blood pumped by heart into body cavity sinus (all non chordates except Annelida and cephalopod class of Mollusca )
closed - blood pumped into well  developed blood vessels (chordates Annelida and cephalopods )

Question 10

types of body symmetry

Answer 10

asymmetry - body cannot be divided into two halves by any plane passing thru the center
radial symmetry - body can be divided into two halves by only one plane passing thru the center.
bilateral symmetry - by any plane passing thru the center

Question 11

range of body symmetry

Answer 11

• asymmetry - porifera
• radial - coelenterate, ctenophore and Echinodermata and sessile organisms
• bilateral - platyhelminthes to chordate except echinodermata

Question 12

what does bilateral symmetry help in ?

Answer 12

cephalisation : formation of leaf

Question 13

germ layer type and range

Answer 13

diploblastic - ectoderm endo and mesoglial undiffrentiaed cells (coeletrata, ctenophora)
triploblastic - endo medo and ecto (platy - chordates )

Question 14

what is coelem?

Answer 14

large fluid filled spaces between the outer body wall and inner gut wall .
- surrounded by mesoderm by all sides

Question 15

types of coelom and range ?

Answer 15

acoelomate - absent (pori - platy)
pseudocoelomate- false (ascel)
coelomate or eucoelomate- annelida to chordata

Question 16

types of eucoelomate and range ?

Answer 16

schizocoelomate - formed by splitting of mesoderm annelida - mollusca
enterocoelomate- arise form embyonic gut wall
echino - chordata

Question 17

other name for segmentation ?

Answer 17

metamerism

Question 18

what is segmentation and range

Answer 18

segments and matamer present internally as well as externally CHORDATA , ANNELIDA AND ARTHROPODA

Question 19

describe notochord and stomochord

Answer 19

arises from mesoderm I doesnt rise from mesoderm
felxible solid rod present dorsally I flexible hollow
in chordates only I in hemichordates only

Question 20

diff btw notochord and nerve cord

Answer 20

part of

1) skeletal system I 1) nervous system
2) only in chordates dorsally I 2) both non chordates (ventrally and solid) and chordates (dorsally and hollow)

Question 21

types of tube within tube body plan

Answer 21

protostonic - first mouth then anus (ascel - mollusca)

deuterostonic - first anus then mouth (echino - chordata)