ASCHELMINTHES

Question 1

Habitat

Answer 1

Endoparasitic

Question 2

Body organization

Answer 2

Organ syatem

Question 3

Body symmetry

Answer 3

Bilateral

Question 4

Germ layer

Answer 4

triploblastic

Question 5

coelom

Answer 5

pseudocoelomate

Question 6

metameric segmentation

Answer 6

unsegmented

Question 7

body plan

Answer 7

tube within tube

Question 8

Respiratory organ free-living

Answer 8

body surface

Question 9

Respiratory organ parasite

Answer 9

anaerobic

Question 10

pigment for respiration

Answer 10

no pigment

Question 11

type of circulation

Answer 11

open type

Question 12

circulatory organ

Answer 12

absent

Question 13

excretory organ

Answer 13

protonephridia ‘ H shaped renette cells’

Question 14

excretory waste

Answer 14

ammonlelic

Question 15

Digestive system

Answer 15

the first animal to have complete alimentary canal

Question 16

Cloaca

Answer 16

present on the male aschelminthes only
terminating of alimentary canal
genital duct and urinary system
opening outside the duct

Question 17

muscular pharynx

Answer 17

first type muscle observed

Question 18

Digestion

Answer 18

extracellular

Question 19

Skeleton

Answer 19

Hydroskeleton

Question 20

nervous system

Answer 20

1 st nervous system

Brain ring/ cerebral ganglion

Question 21

reproductive body

Answer 21

unisexual

Question 22

maturity of sex organ

Answer 22

protandrous

Question 23

type of reproduction

Answer 23

only sexual reproduction

sexual body show: sexual dimorphism (differentiation in males and females)

Question 24

fertilization

Answer 24

internal + cross

Question 25

development

Answer 25

indirect & few have direct development

Question 26

examples

Answer 26

Ascaris (roundworm)
ancylostoma (hookworm)
entrobious( pinworm)
waucheria (filanalworm)
trichinella