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| Biology MCQs For Entry Test Preparation (Chapter Wise) || Important Biology MCQs For Entry Test || MDCAT Biology Test Online Preparation MCQs with Answers |
1- Which of the following phyla has animals that lack tissue organized into organs, have indeterminate shapes, and are symmetrical:
a) Echinodermata
b) Arthropoda
c) Coelenterata
d) Porifera
Answer: D
2- The animals which have a true coelom are:
a) Acoelomates
b) Coelomates
c) Pseudocoelomates
d) None
Answer: B
3- The cylindrical body of a sea anemone can be cut into two equal halves vertically in:
a) One plane
b) Two planes
c) Any plane
d) Four planes
Answer: C
4- Which of the following phyla has animals having bilateral symmetry:
a) Annelida
b) Mollusca
c) Arthropoda
d) All of above
Answer: D
5- The adult echinoderms have secondarily developed:
a) Bilateral symmetry
b) Radial symmetry
c) Both A and B
d) None
Answer: B
6- Diploblastic animals show:
a) A higher degree of specialization
b) A lesser degree of specialization
c) Medium degree of specialization
d) None
Answer: B
7- Which of the following phylum have animals show acoelomate:
a) Platy helminths
b) Annelids
c) Aschelminthes
d) All of the above
Answer: A
8- Animals from annelids to chordates are:
a) Acoelomates
b) Coelomates
c) Pseudocoelomates
d) None
Answer: B
9- Which of the following statement about Porifera is not true:
a) There are respiratory and circulatory organs
b) Pores are present in the body wall
c) Water enters the body through Ostia
d) Water leaves the body through the osculum
Answer: A
10- In Porifera, the food enters the spongocoel cavity through the:
a) Osculum
b) Outer wall
c) Ostia
d) None
Answer: C
11- Which of the following ones are typical marine sponges:
a) Sycon
b) Leucosolenia
c) Spongilla
d) All of above
Answer: A
12- Which of the following statements is true:
a) Sponges have a great capacity to absorb water
b) Sponges are used in surgical operations
c) Sponges are also used for sound absorption in buildings
d) All of above
Answer: D
13- The name cnidaria has been given to coelenterates animals due to the presence of special cells called:
a) Choanocytes
b) Cnidocytes
c) Pinacocytes
d) None
Answer: B
14- Which of the following parasites is an Ectoparasite?
a) Taenia solium
b) Fasciola hepatica
c) Schistosoma
d) Lice
Answer: D
15- Ascaris lumbricoides is a:
a) Intestinal parasite
b) Present in the blood
c) Present in a ureter
d) Present in the stomach
Answer: A
16- Which of the following parasite also known as pinworm:
a) Fasciola hepatica
b) Enterobius vermicularis
c) Ascaris lumbricoides
d) Taenia solium
Answer: B
17- In annelids which type of circulatory system is present:
a) Closed circulatory system
b) Open circulatory system
c) Both A and B
d) None
Answer: A
18- The larvae produced in annelids are:
a) Bipinnaria
b) Brachiolaria
c) Trochophore
d) All of the above
Answer: C
19- The process of shedding the exoskeleton is called:
a) Ecdysis
b) Ecdysone
c) Thyroxine
d) Triiodothyronine
Answer: A
20- The respiratory pigment in the phylum Mollusca is:
a) Hemoglobin
b) Haemocyanin
c) Oxyhaemoglobin
d) Cyanin
Answer: B
21- Liver oil of which of the following fish is used for the treatment of some vitamin deficiencies:
a) Rays
b) Sharks
c) Lamprey
d) Crabs
Answer: B
22- Which of the following animal is amphibian:
a) Shark
b) Toads
c) Snakes
d) Lizards
Answer: B
23- Reptiles have embryonic membranes:
a) Amnion
b) Allantois
c) Chorion
d) All of above
Answer: D
24- The organ of voice in birds is called:
a) Thorax
b) Syrinx
c) Vocal cords
d) Larynx
Answer: B
25- Dyck bill platypus is:
a) Prototheria
b) Eutheria
c) Metatheria
d) All of above
Answer: A
26- Which of the following is Metatheria:
a) Echidna
b) Elephant
c) Horse
d) Kangaroo
Answer: D
27- Asexual reproduction in sponges takes place by:
a) Binary fission
b) Fragmentation
c) Budding
d) None
Answer: C
28- Fasciola hepatica completes its life cycle in hosts:
a) 2
b) 3
c) 1
d) 4
Answer: A
29- A vertebrate that respires through gill (at some stage), lungs, as well as moist skin is:
a) Skate
b) Frog
c) Lizard
d) Tortoise
Answer: B
30- Which one of the following animals is ovoviviparous:
a) Salamander
b) Shark
c) Lizard
d) Rabbit
Answer: B
31- The operculum (bony flap) in bony fishes covers the organs like:
a) Eyes
b) Tympanic cavity
c) Mouth
d) Gills
Answer: D
32- The vertebrates which respire through gills at the larval stage and lungs at the adult stage belong to the class:
a) Reptilia
b) Mammalia
c) Pisces
d) Amphibia
Answer: D
33- The name nematode means:
a) Un-pointed ends
b) Straight
c) Pointed ends
d) None
Answer: C
34- Which of the following phyla have triploblastic animals:
a) Coelenterata
b) Protozoa
c) Echinodermata
d) All of the above
Answer: C
35- Which of the following about birds is not true:
a) Skeleton is light due to airspaces
b) The circulatory system has a four-chambered heart
c) The excretory system has a bladder
d) Fertilization is internal
Answer: C
36- In mammals the red blood cells are:
a) Nucleated
b) Binucleated
c) Non-nucleated
d) None
Answer: C
37- All the following are cartilaginous fish EXCEPT:
a) Dogfish
b) Codfish
c) Skates
d) Ray
Answer: B
38- It is universally accepted by biologists that mammals have evolved from reptilian ancestors. Identify, the name of the ancestor of mammals:
a) Archaeopteryx
b) Varanope
c) Cotylosaurs
d) None
Answer: C
39- Excretion in annelids takes place by a specialized structure called:
a) Kidney
b) Nephridia
c) Malpighian tubules
d) Both A and B
Answer: B
40- Placental mammals are included in a:
a) Eutheria
b) Prototheria
c) Metatheria
d) None
Answer: A
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