Animalia

Question 1

Animal starts it’s life as a ?

Answer 1

Zygote

Question 2

Developmental patterns

Answer 2

Cleavage —- morula — blastula — gastrula– blastopore

Question 3

Multicellular, solid ball of cells ?

Answer 3

Morula

Question 4

Hollow ball of cells ?

Answer 4

Blastula

Question 5

Blastula invaginates i.e folds inward to form ?

Answer 5

Gastrula

Question 6

Gastrula sac having an opening called ?

Answer 6

Blastopore

Question 7

Hollow digestive system which is open at one end only and a gut is ?

Answer 7

Enteron

Question 8

Tube like digestive stystem ?

Answer 8

Two openings

Question 9

Which lack proper tissue organization ?

Answer 9

Parazoa — 1 phylum

Question 10

Tissue organized into organs

Answer 10

Eumetazoa ( True metazoan ) — 8 phyla

Question 11

Which are diploblastic?

Answer 11

Cnidarians ( ecto + endoderm )

Question 12

Which are triploblastic ?

Answer 12

All except cnidarians ( Endo+ ecto+mesoderm )

Question 13

Which has No germ layer ?

Answer 13

Poriferan

Question 14

Symmetry

Answer 14

Overall shape of animal body

Question 15

Animals that have no plane of symmetry are called

Answer 15

A symmetrical
example … sponges

Question 16

A body with 1 main axis around which body parts are arranged in the organism and can be divided into identical halves by any plane that passes through the main axis ?

Answer 16

Radial symmetry
e.g — Coelenterata and echinodermata

Question 17

The symmetry in which animal can be divided into identical right and left half only by a cut through the midline of its body

Answer 17

Bilaterally symmetrical
example — platyhelminthes to chordata

Question 18

Animals which lack body cavity are called ?

Answer 18

Acelomate ( platyhelminthes )

Question 19

Which has false body cavity and lack a true ceolom are called ?

Answer 19

Pseudocoelomata ( nematodes)

Question 20

Animals which has a True coelom are called ?

Answer 20

Coelomata ( from Annelida to Chordata )

Question 21

What is coelom ?

Answer 21

True body cavity being lined by meso dermal layers is called coelom

Question 22

What Is blastopore ?

Answer 22

The opening which develops in an embryo at the gastrula stage … This opening forms either mouth or anus

Question 23

What are protostomata ?

Answer 23

Protostoma — First mouth
E.g
Annelida / mollusca / arthropoda

Question 24

What are deuterostomata ?

Answer 24

Deuterostoma — Second mouth 👄

E.g Echinodermata and Chordata