MCQS OF BIOLOGY KINGDOM ANIMALIA: (ZOOLOGY). FOR ALL COMPETITIVE EXAMINATION. with reason wise-answer key :

Here we explain most asked multiple choice question of kingdom animalia with proper explanation of answer key.....

TOP -1O - MCQ,s OF BIOLOGY/ZOOLOGY MUST LEARN:

1.The female of one of the following classes posses a single ovary,that is class
  A).Amphibian. 
 (B): Aves.
 (C): Pisces.
 (D): Mammals.

2.  The larva of Balanoglossis is called:

 (A): Tornaria larva.  
 (B): Radiolaria larva.  
 (C): Trochophore larva. 
  (D): Bipinnaria larva.
3. Hermaphrodite phylum is:
    (A): Echinodermata . 
    (B): Verteberata.  
    (C): Arthropoda. 
    (D):  Annelida.
4.How many walking legs are present in archenids:
     (A): 6 . 
     (B): 4.
     (C): 8. 
    (D): 12.
5.The branch of biology in which we study about fishes is called:
 (A): Herpetology . 
 (B): Ichthyology.  
 (C): Ornithology.
 (D):  None of them.
6.Portuguese man of war is:
(A): Echinodermata . 
 (B): Reptiles.
 (C): Mammals. 
 (D):  Coelenterata. 
 7.In octopus foot is modified into  
 (A): Foot . 
 (B): Arm
 (C): Siphon.

  (D): None of them.

  8.Which of the following animal includes          in Deuterostome.
  (A): Chiropterus. 
  (B): Jelly fish.  
  (C): Penguin. 
   (D):  Mytelus.

9.Chiroptera are........

    (A): Hoofed mammals .
    (B): Aquatic mammals. 
    (C): Flesh eating mammals
   (D):  Flying mammals.

10. Amphibian have generally three chamber in their hearts. What type of chamber they are?

 (A): Two ventricle one auricle.
 (B): All three auricles
 (C): All three ventricles. 
 (D): One ventricle two auricles.
ANSWER KEY-WITH-REASON.
1-B---(A left single ovary  present in class Aves. This reduces the weight which is essential for flight.).
2-A--(A tornaria is the larva of some of Hemichordates like Balanoglossus. It is very similar in appearance to the bipinnaria larvae ).
3-D-(Maximum Hermaphrodite’s animal are present in phylum Annelida.).
4-C-(There are typically four pairs of walking legs in archinada so the total number will be 8.).  (Consider spider.)
5-B-(Ichthyology is the branch of Biology in which we study of all type of true fishes.).
6-D-( Portuguese man of war belongs to phylum coelenterate.).
7-C-(The foot of the Octopus has become modified into a muscular siphon which help in locomotion and other function.).
8-C-(There are three major group of deuterostomes: Chordata, Echinodermata, Hemichordates.                                                                                                          Chaetopterus. —Annelida. -- Jelly fish. ---coelenterates.  Mytilus. ---mollusks. --Penguin. --- birds.
9-D-(  Chiroptera are...... flying mammals.,such as bat.).
10-D-(Amphibians have a three-chambered heart that has two auricles and one ventricle.).