Saturday, March 30, 2013

BIOLOGY MODEL QUESTIONS FOR NEET-CELL AND ANIMAL KINGDOM




ANIMAL KINGDOM
1.Which one of the following statements is incorrect?
A.Viviparity is the reproductive pattern shown by most mammals
B.Viviparity occurs primarily in salamanders and caecilians.
C.In viviparity, a shell does not form around the egg.
D.Viviparity is not found in species of lizards and snakes.
ANS D
Question 2 
Which one of the following statements is stated incorrectly regarding cartilaginous fishes?
ACartilaginous fishes have sense organs.
BMost cartilaginous fishes have color vision.
CTeeth-like placoid scales are found on the skin of cartilaginous fishes.
D In cartilaginous fishes, gas exchange occurs in the gills.
ANS B
Question 3 
Which statement is correct regarding reptiles, birds, and mammals?
AEvolved from a common ancestor
BEmbryos are surrounded by a fluid-filled sac called amnion
COuter covering is largely watertight.
DAll of the above
ANS D
Question 4 
Which one of the following characteristics is NOT a shared by birds and mammals?
A backbone and internal skeleton
BBreathing using lungs
CViviparity
DWarm blooded nature
ANS C
Question 5 
Which one of the following statements is incorrect?
ARadial symmetry is displayed by sea anemone and aquatic animal.
BFasciola hepatica is also known as the sheep liver fluke.
CTriploblastic animals are usually bilaterally symmetrical
DMesoglea is present in between ectoderm and endoderm in Obelia
ANS D
Question 6 
Which one of the followings belongs to platyhelminthes?
A.Plasmodium
B.Trypanosoma
C.Schistosoma
DWuchereria
ANS C
Question 7 
Radial symmetry is generally exhibited by which animals?
Which are attached with substratum
Which are aquatic
Which have ciliary feeding
Which have one opening of alimentary canal
Question 8 
Tachyglossus is a connecting link between
Reptiles and Birds
Amphibians and Reptiles
Birds and Mammals
Reptiles and Mammals
Question 9 
The scientific name of Asian tiger mosquito
Aedes aegypti
Aedes albopictus
Aedes taeniorhynchus
Aedes albolineatus
Question 10 
Water-Vascular’ system is found in
Sea-anemone
Sea-pen
Sea-cucumber
Sea-horse
Question 11 
Cell tissue grade of organization occurs in
Platyhelminthes
Sponges
Protozoa
Coelenterata
Question 12 
Swarming generally occurs in
Pyrilla
Mosquito
House fly
Locust
Question 13 
Animals having a built in thermostat to maintain constant body temperature are known as
Biothermic
Poikilothermic
Oligothermic
Homeothermic
Question 14 
Which one of the followings in birds indicates their reptilian ancestry?
Eggs with a calcareous shell
Scales on their hind limbs
Four-chambered heart
Two special chambers crop and gizzard in their digestive tract
Question 15 
______ are devoid of respiratory, excretory and circulatory organs.
Threadworms
Sponges
Tapeworms
Liver fluke



CELL
Question 1
Cell division can not be stopped in which phase of the cell cycle?
A
G1-phase
B
G2-phase
C
S-phase
D
Prophase
Question 2
What type of plant is formed when colchicine is used in the process of development of Raphanobrassica?
A
Autotetraploid
B
Haploid
C
Triploid
D
Allotetraploid
Question 3
The non-sister chromatids twist around and exchange segments with each other during
A
Leptotene
B
Diakinesis
C
Diplotene
D
Pachytene
Question 4
Synapsis occurs between
A
mRNA and ribosomes
B
A male and a female gamete
C
Two homologous chromosomes
D
Spindle fibres and centromere
Question 5
If you are provided with root-tips of onion in your class and are asked to count the chromosomes which of the following stages can you most conveniently look into:
A
Prophase
B
Anaphase
C
Telophase
D
Metaphase
Question 6
Cells in G0 phase of cell cycle
A
Exit cell cycle
B
Enter cell cycle
C
Suspend cell cycle
D
Terminate cell cycle
Question 7
In the somatic cell cycle:
A
In G1 phase DNA content is double the amount of DNA present in the original cell
B
A short interphase is followed by a long mitotic phase
C
DNA replication takes place in S-phase
D
G2 phase follows mitotic phase
Question 8
Which of the following events takes place during Diplotene stage of prophase I of meiosis?
A
Compaction of chromosomes
B
Formation of synaptonemal complexes
C
Formation of recombinational nodules
D
Dissolution of synaptonemal complex
Question 9
The major event that occurs during the anaphase of mitosis, which brings about the equal distribution of chromosomes, is
A
splitting of the centromeres
B
splitting of the chromatids
C
replication of the genetic material
D
condensation of the chromatin
Question 10
Which of the following is unique to mitosis and not a part of meiosis?
A
Homologous chromosomes pair and form bivalents
B
Chromatids are separated during anaphase
C
Homologous chromosomes behave independently
D
Homologous chromosomes crossover
Question 11
Arrange the following events of meiosis in the correct sequence:

I. Terminalization

II. Crossing over

III. Synapsis

IV. Disjunction of genomes

The correct sequences :

A
II, I, IV, III
B
III, II, I, IV
C
IV, III, II, I
D
I, IV, III, II
Question 12
Assertion: Phase of cell division is also known as formative phase.

Reason: In formative phase new cells are produced from pre-existing cells through meiosis division. 

A
Both Assertion and Reason are true and Reason is the correct explanation of the Assertion.
B
Both Assertion and Reason are true but the Reason is not the correct explanations of Assertion.
C
Assertion is true, but Reason is false.
D
Both Assertion and Reason are false.
Question 13
From the following, identify the two correct statements with reference to meiosis

I. Bead like structure are absent on chromosomes.

II. Displacement of chiasmata occurs in diakinesis.

III. Separation of two basic sets of chromosomes.

IV. No division of centromere.

The correct statements are:

A
III, IV
B
II, IV
C
II, III
D
I, III
Question 14
Given below is the representation of a certain event at a particular stage of a type of cell division. Which is this stage? 
A
Prophase I during meiosis
B
Both prophase and metaphase of mitosis
C
Prophase of Mitosis
D
Prophase II during meiosis
Question 15
Study the following lists and select the correct match from the option given below.
List-I List-II
(A) Initiation of spindle fibres (I) Anaphase - I
(B) Synthesis of RNA and Protein (II) Zygotene
(C) Action of endonuclease (III) G1 phase
(D) Movement of chromatids towards opposite poles (IV) Pachytene
  (V) Anaphase - II
A
A - I, B - III, C - V, D - IV
B
A - III, B - II, C - I, D - V
C
A - II, B - III, C - IV, D - V
D
A - V, B - III, C - I, D - II



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