Custom Practice Test

Biology-II-Section-A

1.

Which of the following match is correct?

1.	Cockroach	– Crustacea
2.	Pila	– Pelecypoda
3.	Spider	– Arachnida
4.	Unio	– Gastropoda

2.

Backbone of DNA is formed by :-
1. Sugar $-$ Phosphate $-$ Sugar
2. Nitrogen base $-$ Phosphate $-$ Sugar
3. Phosphate $-$ Nitrogen base $-$ Sugar
4. Base pairs

3.

Which of the following statement is incorrect regarding the tissue lining organs and cavities?
1. They play a role in separating two structures from each other.
2. Cells are compactly packed with large intercellular space or matrix.
3. On the basis of number of cell layers present, they are classified as simple and compound.
4. They are closely bound to each other through specialised structures called as tight junctions.

4.

Name the enzymes that catalyze removal of groups from substrates by mechanism other than hydrolysis leaving double bonds:
1. Transferases
2. Lyases
3. Isomerases
4. Ligases

5.

Which of the following groups of animals depicted in the diagrams given below are dioecious, coelomate, metamerically segmented and have closed circulatory systems?

Options
1. A only
2. A & B
3. C only
4. A,B & C

6.

Identify the following simple epithelial tissues:

	A	B	C	D
(1)	Cuboidal	Squamous	Columnar	Ciliated column
(2)	Squamous	Cuboidal	Columnar	Ciliated columnar
(3)	Pseudostratified squamous	Cuboidal	Columnar	Ciliated columnar
(4)	Squamous	Cuboidal	Columnar	Pseudostratified columnar (ciliated)

7.

Planaria, Taenia and blood fluke
1. All are coelomate
2. All are found in gut
3. All are flat worms
4. Both (2) & (3)

8. Which of the following statement is correct?

1.	Lecithin is a phospholipid
2.	Proteins are the most abundant molecules in cell
3.	Maltose is a disaccharide made up of glucose and galactose
4.	Adrenaline and rubber are secondary metabolites of plant cells

9.

Choose the correct option, pairing the principal cell with the tissue

1.	Mast cell	-	Adipose tissue
2.	Fibroblasts	-	Areolar tissue
3.	Macrophages	-	Tendon
4.	Chondroclasts	-	Bone

10.

Given below are two statements:

Assertion (A):	Mammals are characterized by the presence of mammary glands.
Reason (R):	All mammals possess functional milk-secreting glands that help in nourishing the young ones.

1.	Both (A) and (R) are True and (R) is the correct explanation of (A).
2.	Both (A) and (R) are True but (R) is not the correct explanation of (A).
3.	(A) is True but (R) is False.
4.	Both (A) and (R) are False.

11.

The flattened cells with irregular boundaries are found in

(1) Squamous epithelium
(2) Cuboidal epithelium
(3) Columnar epithelium
(4) Compound epithelium

12.

Mark the incorrect match with respect to fishes

1.	Aquarium	- Betta (fighting fish)
2.	Fresh water	- Clarias (Magur)
3.	Fresh	- Hippocampus
4.	Lung fish	- Neoceratodus

13.

Which of the following is correct?
1. The ES complex formation is a transient phenomenon
2. The structure of the substrate gets transformed into the structure of product.
3. All the structures formed between substrate and product are called intermediates.
4. All of these

14.

Telomerase is an enzyme which is a
1. repetitive DNA
2. RNA
3. simple protein
4. ribonucleoprotein

15.

Select the incorrectly matched pair from the following:
1. Chondrocytes - Smooth muscle cells
2. Neurons - Nerve cells
3. Fibroblast - Areolar tissue
4. Osteocytes - Bone cells

16. Which of the following is false about the nervous system of frog?
1. Fore-brain includes paired olfactory lobes, paired cerebral hemispheres and unpaired diencephalon
2. Mid-brain comprises paired optic lobes and paired crura cerebri
3. Hind-brain comprises cerebellum and medulla oblongata
4. There are 10 pairs of nerves arising from brain and spinal cord.

17.

Which one is false?
1. Fatty acids may be unsaturated (with one or more C = C bonds) or a saturated (without double bonds)
2. Fatty acid(s) may be esterified with glycerol forming monoglyceride, diglyceride and then triglyceride
3. Some tissues especially neural tissues have lipids with very simple structures
4. Fats and oils are triglycerides

18.

The most abundant and widely distributed tissue in the bodies of complex animals is:
1. Epithelium
2. Connective
3. Muscular
4. Neural

19. Identify the incorrectly matched pair:

1.	Echinodermata	Water vascular system
2.	Hemichordata	Stomochord
3.	Cyclostomata	Cartilaginous jaw
4.	Cephalochordata	Notochord persistent throughout life

20. Comprehend the given statements.

A:	Enzyme-substrate complex produced during a catalysed reaction is highly reactive.
B:	This complex dissociates into its product and changed enzyme with an intermediate formation of enzyme-product complex.

1. Both statements A and B are correct.
2. Both statements A and B are incorrect.
3. Only statement A is correct.
4. Only statement A is incorrect.

21. What will be the number of nitrogenous bases in a 6.8 nm long double helix B-DNA?

1.	40	2.	20
3.	80	4.	60

22. Read the statements given below and select the incorrect one
1. Lipids are insoluble in water because lipid molecules are hydrophobic in nature
2. Enzymes generally function in a narrow range of temperature and pH
3. Glycine is an aromatic amino acid
4. Water is the most abundant molecule in a cell

23.

Body having meshwork of cells, internal
cavities lined with food filtering flagellated cells
and indirect development is the
characteristics of phylum :
1. Protozoa
2. Coelenterata
3. Porifera
4. Mollusca

24.

Which one of the following sets of animals belong to a single taxonomic group?
1. Cuttlefish, jellyfish, silverfish, dogfish, starfish
2. Bat, pigeon, butterfly
3. Monkey, chimpanzee, man
4. Silkworm, tapeworm, earthworm

25.

The kind of epithelium which forms the inner walls of blood vessels is
1. cuboidal epithelium
2. columnar epithelium
3. ciliated columnar epithelium
4. squamous epithelium

26.

Given below are two statements:

Assertion (A):	Body of roundworms is circular in cross-section.
Reason (R):	Their coelom is incompletely lined by mesoglea.

1.	Both (A) and (R) are True and (R) is the correct explanation of (A).
2.	Both (A) and (R) are True but (R) is not the correct explanation of (A).
3.	(A) is True but (R) is False.
4.	Both (A) and (R) are False.

27.

In curve of enzyme catalyzed reaction, the value of velocity of enzyme reaction at point A will be

1. $\frac{1}{2} V_{m a x}$ and velocity may increase by increasing temperature
2. $\frac{1}{2} V_{m a x}$ and velocity may increase by increasing substrate
3. $\frac{1}{2} V_{m a x}$ and velocity may increase by increasing by catalyst
4. $\frac{1}{2} V_{m a x}$ and velocity remain constant even changing any factor in to the medium.

28.

Loose connective tissue has cells and fibres loosely arranged in a semifluid ground substance. Which of the following can be taken as an example of it?

1.	Areolar tissue	2.	Cartilage
3.	Adipose tissue	4.	Both (1) and (3)

29.

In the graph given below which letter represents the reaction occurring in the presence of a competitive inhibitor of the enzyme?

1. A
2. B
3. C
4. D

30.

Which of the following is not true about cellulose?

1.	It cannot be digested by humans
2.	It’s a polymer of β, D Glucose
3.	It’s a branched polymer
4.	It does not give blue colour with Iodine

31.

The matrix of connective tissue is

(1) Modified Polysaccharides
(2) Modified Glycoprotein
(3) Polysaccharides
(4) Protein

32.

Select the correct option in respect of characteristics
of each group :-

	Cyclostomes	Chondrichthyes	Osteichthyes
(i)	Marine	Marine, Fresh water	Marine
(ii)	Sucking mouth	Ventral mouth	Terminal mouth
(iii)	6-15 Pairs of Gills	5-7 Pairs of Gills	4 Pairs of Gills
(iv)	Placoid scales	Cycloid Scales	Ctenoid/ Ganoid

1.	(i), (ii) are correct.
2.	(i), (iii), (iv) are correct.
3.	(ii), (iii) are correct.
4.	(ii), (iii), (iv) are correct.

33.

Which of the following is correct option?

1.	Frog	- External fertilisation
2.	Scoliodon	- External fertilisation
3.	Exocoetus	- Internal fertilisation
4.	Ophiura	- Internal fertilisation

34. Vasa efferentia in frogs:
1. Are 30-40 in number connecting tests to the kidneys
2. Run transversely through the mesorchium and opens into Bidder's canal
3. Do not connect to Bidder's canal
4. Has no role in sperm transport

35.

Which of the following cells are found in areolar connective tissue?
(1) Mast cells
(2) Macrophage
(3) Fibroblast
(4) All are correct

Biology-II-Section-B

36.

Which type of junctions in the epithelial tissues facilitate the cells to communicate with each other by connecting the cytoplasm of adjoining cells for rapid transfer of ions or small molecules?
(1) Tight junctions
(2) Adhering junctions
(3) Gap junctions
(4) Desmosomes

37.

Which of the following compound is present in least amount in cell?
(1)Water
(2)nucleic acids
(3)Carbohydrates
(4)Lipids

38.

What will be the net charge on the Arginine amino acid when it is in the zwitter ionic form?
1.+2
2.+1
3.0
4.-1

39.

Which of the following is the most abundant protein in animal world?
(1)Collagen
(2)Albumin
(3)RUBISCO
(4)Antibody

40.

Collagen fibres are secreted by:
(1) Fibroblast
(2) Mast cells
(3) Histocyte
(4) Macrophages

41.

Which of the following is true for all amphibians?

1.	All have tail
2.	Excretion by kidneys
3.	Alimentary canal and urinary and reproductive tracts open into different chambers to the exterior
4.	Heart is three-chambered with two ventricles

42. Match List I with List II

List I	List II
A. Chitin	I. Polymer of fructose
B. Lecithin	II. Protein
C. Collagen	III. Polysaccharide
D. Inulin	IV. Phospholipid

Choose the correct answer from the options given below:
1. A-III, B-II, C-I, D-IV
2. A-III, B-I, C-II, D-IV
3. A-IV, B-III, C-I, D-II
4. A-III, B-IV, C-II, D-I

43.

Functions of 1, 2, 3, 4 and 5 respectively is:

	Cell		Function
1	Squamous epithelium	I	Help to stop substances from leaking across a tissue.
2	Cuboidal epithelium	II	Move particles or mucus in a specific direction over the epithelium.
3	Ciliated epithelium	III	Allow rapid transfer of ions, small molecules and sometimes big molecules.
4	Tight junctions	IV	Perform function of cementing to keep neighbouring cells together.
5	Adhering junctions	V	They form diffusion boundary.
6	Gap junctions	VI	Secretion and absorption in glandular ducts and nephrons.

(1) I, II, V, III, IV, VI
(2) V, VI, II, I, IV, III
(3) II, VI, V, I, III, II
(4) VI, III, IV, II, I, V

44. Which of the following is false about the frog?
I. Eyes are bulged out and covered by a nictitating membrane that protects them while in water
II. On either side of the eyes a membranous tympanum (ear) receives sound signals
III. The forelimbs and hind limbs help in swimming, walking, leaping and burrowing
IV. The hind limbs end in five digits and they are larger and muscular than fore limbs that end in four digits
V. Feet have webbed digits that help in swimming
VI. Frogs exhibit sexual dimorphism
1. Only I and VI
2. Only III
3. Only IV and V
4. None

45. All of the following are poikilothermous animals except
1. Labeo
2. Hyla
3. Struthio
4. Alligator

46.

Closed circulatory system is not seen in:

1.	Vertebrates
2.	Annelids
3.	Cephalopod Mollusks
4.	Aquatic Arthropods

47.

A true coelom is between

1.	Mesoderm and endoderm
2.	Ectoderm and mesoderm
3.	Body wall and endoderm
4.	Body wall and mesoderm

48.

Unbranched polymer of glucose is
1. Starch
2. Glycogen
3. Cellulose
4. Chitin

49.

Which of the following is a limbless amphibian?
1. Hyla
2. Salamandar
3. Ichthyophis
4. Bufo

50.

Each muscle is composed of many long, cylindrical fibres arranged in parallel arrays. These fibres are composed of numerous fine fibrils, called:
1. Microfilament
2. Myofibrils
3. Microtubule
4. Sarcoplasm

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