WorksheetsAnimal Kingdom till Pisces
Total questions: 10
Worksheet time: 9mins
With regard to ''Jawless vertebrates'' some statement are given below . Find incorrect statements only -
(1) They have an elongated body bearing 4 pairs of gill slits for respiration.
(2) They are devoid of scales and unpaired fins.
(3) Vertebral column is cartilaginous and migrate from sea to river for spawning.
1 and 2 are wrong
1 and 3 are wrong
2 and 3 are wrong
1 , 2 and 3 are wrong
Assertion (A) - Annelids and Chordates have a closed circulatory system .
Reason (R) - In Annelids and Chordates , the blood pumped by the heart is always circulated through a closed network of blood vessels.
Both (A) and (R) are true and R is the correct explanation of (A)
Both (A) and (R) are true and R is not the correct explanation of (A)
(A) is true but (R) is false
(A) is false but (R) is true
A student bought home a strange animal which he found outside under a rock. It had moist skin , a complete digestive tract , a ventral nerve cord and have metameric segments. Identify the phylum of the animal .
Arthropoda
Mollusca
Annelida
Chordata
Which of the following is common feature of Torpedo and Trygon ?
They live in river
They possess electric organs .
They have placoid scales and belong to class Chondrichthyes
They possess a poison sting on the tail
Match the following -
A - 6
B - 1
C - 3
D - 2
A - 1
B - 4
C - 6
D - 5
A - 3
B - 1
C - 6
D - 5
A - 3
B - 4
C - 6
D - 2
Find the incorrect statement only with regard to Hemichordates---------
(1) The body is cylindrical and is composed of an anterior collar, proboscis and a long trunk.
(2) Excretion takes place through gills.
(3) Open Circulatory system
3
2 and 3
1 and 3
1 and 2
S 1 - The arthropods are the most abundant group of animals characterised by the presence of jointed appendages.
S 2 -The hemichordates are a small group of worm-like marine animals.
S 1 and S2 are true
S1 and S2 are false
Only S 1 is true
Only S 2 is true
A - The molluscs have a soft body surrounded by an external calcareous shell.
B - Sepia is a member of Echinodermata.
A and B both are true
A and B both are false
A is true but B is false
A is false but B is true
1 - Fertilisation is external and development may be direct or indirect in members of Aschelminthes.
2 -In Chondrichthyes there is internal fertilisation and many of them are oviparous.
1 is false and 2 is true
1 is true and 2 is false
Both are true
Both are false
1 - The members of Superclass Pisces are warm blooded.
2 - Skin is covered with placoid scales in Cyclostomata.
3 - In Great white shark teeth are modified cycloid scales which are backwardly directed.
All are wrong
1 and 2 are wrong
2 and 3 are wrong
1 and 3 are wrong
