animal kingdom ncert

Question 1

The characteristic features of chordates?

Answer 1

notochord, dorsal nerve chord paired pharyngeal gill slits

Question 2

special feature of only chordates

Answer 2

post anal tail

Question 3

comparison between chordates and non chordates

Answer 3

refer to table 4.1 pg 55 NCERT

Question 4

phylum chordata is divided into

Answer 4

urochordata(tunicata), cephalochordata,vertebrata

Question 5

urochordata and cephalochordata are also referred to as

Answer 5

protochordates

Question 6

the protochordates are fresh+marine water T/F

Answer 6

false they are exclusively marine

Question 7

other name for urochordates

Answer 7

tunicata

Question 8

difference between urochordates and cephalochordates

Answer 8

` In Urochordata, notochord
is present only in larval tail, while in Cephalochordata, it extends from head to tail
region and is persistent throughout their life.

Question 9

examples of urochordates

Answer 9

Ascidia, Salpa,

Doliolum

Question 10

examples of cephalochordates with comman name

Answer 10

Branchiostoma

Amphioxus or Lancelet

Question 11

which of the subphyla of possess notochord only in embryonic stage

Answer 11

vertebrata

Question 12

all vertebrates are chordates but

all chordates are not vertebrates T/F

Answer 12

true

Question 13

what are the special features of vertebrates

Answer 13

vertebrates have a
ventral muscular heart with two, three or four
chambers, kidneys for excretion and
osmoregulation and paired appendages which
may be fins or limbs.

Question 14

give the full bifurcation of vertebrata

Answer 14

refer to page 56 ncert(image upload nhi hote :

Question 15

—–bear fins and —–bears limbs

Answer 15

1. pisces

2. tetrapoda