Animal Kingdom part 2

Question 1

This is the largest phylum of Animalia which
includes insects.

Answer 1

Phylum Arthorpoda

Question 2

The body
of arthropods is covered by chitinous exoskeleton. The body consists of…

Answer 2

Head, thorax, abdomen. Jointed appendages

Question 3

Excretion of arthropoda takes
place through

Answer 3

Malpighian tubules

Question 4

This is the second largest animal phylum

Answer 4

Phylum Molluska

Question 5

Body of molluska is covered by a calcareous shell
and is unsegmented with a distinct

Answer 5

head, muscular foot and visceral hump

Question 6

The molluska mouth contains a file-like rasping organ for
feeding, called

Answer 6

Radula

Question 7

These animals have an endoskeleton of calcareous ossicles

Answer 7

Echinodermata

Question 8

The most distinctive feature of echinoderms is the
presence of

Answer 8

Water vascular system

Question 9

was earlier considered as a sub-phylum under
phylum Chordata. But now it is placed as a separate phylum
under non-chordata

Answer 9

Hemichordata

Question 10

have a rudimentary
structure in the collar region called stomochord, a structure
similar to notochord

Answer 10

Hemichordates

Question 11

This phylum consists of a small group of worm-like
marine animals with organ-system level of organisation

Answer 11

Hemichordata

Question 12

The body of hemichrodata is cylindrical and is composed of

Answer 12

Anterior prosboscis, collar and a long trunk

Question 13

Animals belonging to this phylum are fundamentally
characterised by

Answer 13

Notochord, Dorsal hollow nerve chord, Paired pharyngeal gill slits

Question 14

Phylum Chordata is divided into three
subphyla:

Answer 14

Urochordata or Tunicata,
Cephalochordata and Vertebrata.

Question 15

Subphyla Urochordata and
Cephalochordata are often referred to as

Answer 15

Protochordates

Question 16

They have a sucking and
circular mouth without jaws (Fig. 4.18). Their
body is devoid of scales and paired fins

Answer 16

Cyclostomes

Question 17

They are marine animals with streamlined body
and have cartilaginous endoskeleton

Answer 17

Chondrichthyes

Question 18

It includes both marine and fresh water fishes with bony
endoskeleton

Answer 18

Class Osteichthyes

Question 19

They can live in aquatic as well as terrestrial
habitats

Answer 19

Class amphibia

Question 20

refers to their creeping or crawling mode of locomotion
(Latin, repere or reptum, to creep or crawl)

Answer 20

Class reptilia

Question 21

The characteristic features of this class are the presence of feathers and most of them can fly except flightless birds (e.g., Ostrich).

Answer 21

Class Aves

Question 22

homoiothermous

Answer 22

Another word for warm blooded

Question 23

They are found in a variety of habitats – polar ice caps, deserts, mountains, forests, grasslands and dark caves. Some of them have adapted to fly or live in water. The most unique mammalian characteristic is the presence of milk producing glands (mammary glands) by which the young ones
are nourished

Answer 23

Class mammalia