Structural Organization In Animals MCQ Solved Paper for IBPS PO

1. A student was given a sample of two tissues. He observes the tissues under the microscope and draws their figures (1 and 2) as shown below.

Identify the tissues (1 and 2).
A. 1: Columnar cells bearing cilia; 2: Unicellular glandular epithelium
B. 1: Cuboidal cells bearing cilia; 2: Multicellular glandular epithelium
C. 1: Compound cells bearing cilia; 2: Unicellular glandular epithelium
D. 1: Columnar cells bearing cilia; 2: Multicellular glandular epithelium
Answer : D

2. The figure given below shows the alimentary canal of cockroach with few structures labelled as 1, 2, 3 and 4. Identify the correct identification of the structure which is also called proventriculus and helps in grinding the food particles.

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

3. Which of the following type of tissue is being described by the given statements ?

1. They are named because of their special function of linking and supporting other tissues/organs of the body.
2. They include cartilage, bone, adipose and blood.
3. They provide strength, elasticity and flexibility to the tissue.
4. They also secrete modified polysaccharides, which accumulate between cells and fibres and act as matrix.

A. Epithelial tissue
B. Connective tissue
C. Muscle tissue
D. Neural tissue
Answer : B

4. When cardiac muscle cells are damaged by a heart attack, they are usually replaced by
A. connective tissue cells
B. new smooth muscle cells
C. new cardiac muscle cells
D. epithelial cells
Answer : A

5. Phallic organs in cockroach are related to
A. male excretory system.
B. male reproductive system.
C. female excretory system.
D. female reproductive system.
Answer : B

6. Which of the following statements is not correct regarding neural tissue ?
A. It exerts the greatest control over the bodys responsiveness to changing conditions.
B. Chondrocytes, the unit of neural system are excitable cells.
C. Neuroglial cells protect and support neurons.
D. When a neuron is suitably stimulated, an electrical disturbance is generated.
Answer : B

7. Which of the following is involved in the production of new blood cells ?
A. Adipose cell
B. Bone marrow
C. Liver
D. Matrix
Answer : B

8. Non-ciliated simple columnar epithelium often contains _______, which increase the surface area for secretion and absorption.
A. flagella
B. collagen fibres
C. microvilli
D. all of these
Answer : C

9. Which of the follwing statement(s) is/are correct ?

1. Cockroaches are brown or black bodied animals that are included in class insecta of phylum arthropoda.
2. Males bear a pair of short, thread like anal styles which are absent in females.
3. Heart of cockroach consists of elongated muscular tube lying along mid dorsal line of thorax and abdomen.
4. The nymph grows by moulting about 13 times to reach the adult form.

A. Only (i)
B. Both (ii) and (iii)
C. Both (i) and (ii)
D. All of the above
Answer : B

10. Which of the following type of muscle tissue is being described on the basis of given statements ?

1. These muscle fibres taper at both ends and do not show striations.
2. The wall of internal organs such as the blood vessels, stomach and intestine contain this type of muscle tissue.
3. They are involuntary as their function cannot be directly controlled.

A. Skeletal muscle
B. Smooth muscle
C. Cardiac muscle
D. All of these
Answer : B

11. The kind of epithelium which forms the inner walls of blood vessels is
A. cuboidal epithelium
B. columnar epithelium
C. ciliated columnar epithelium
D. squamous epithelium
Answer : D

12. Muscle tissue cells are contractile, which means they
A. are responsible for the production and secretion of enzymes.
B. are specialized in contraction and relaxation.
C. help in the movement of involuntary organs only.
D. all of the above
Answer : B

13. Match the terms given in column-I with their feature given in column-II and choose the correct option.

Column-I	Column-II
(Terms)	(Features)
A. Exocrine gland	I. They help to stop substances from leaking across a tissue
B. Endocrine gland	II. Hormones are secreted directly into the fluid bathing the gland
C. Tight junctions	III. They perform cementing to keep neighbouring cells together.
D. Adhering junctions	IV. Secretes mucus, saliva, earwax, oil, milk, digestive enzymes and other cell products

A. A IV; B II; C I; D III
B. A II; B IV; C I; D III
C. A IV; B II; C III; D I
D. A IV; B I; C II; D III
Answer : A

14. In cockroach, the testes are present in
A. 3, 4, 5 abdominal segments
B. 4, 5, 6 abdominal segments
C. 5, 6, 7 abdominal segments
D. 6, 7, 8 abdominal segments
Answer : B

15. Which of the following statement(s) is/are correct regarding respiratory system of cockroach ?

1. It consists of a network of trachea, that open through 12 pairs of small holes called spiracles present on th lateral side of the body.
2. Thin branching tubes carry oxygen from the air to all the parts.
3. The opening of the spiracles is regulated by sphincters.
4. Exchange of gases take place at the tracheoles by diffusion.

A. Only (i)
B. (i), (ii) and (iii)
C. (ii), (iii) and (iv)
D. All of these
Answer : C

16. Which of the following statement(s) is/are correct regarding excretory system of cockroach ?

1. Excretion is performed by malphigian tubules.
2. They absorb nitrogenous waste products and convert them into uric acid which is excreted out through hindgut. Hence, this insect called ammonetelic.
3. In addition, fat body, nephrocytes and uricose glands also help in excretion.

A. Only (i)
B. Both (ii) and (iii)
C. Both (i) and (iii)
D. All of these
Answer : C

17. Statement 1 : Intercalated discs are important regions of cardiac muscle cells.
Statement 2 : Intercalated discs function as boosters for muscle contraction waves.
A. Statement-1 and statement-2 are true and statement-2 is a correct explanation for statement-1.
B. Statement-1 and statement-2 are true and ttatement-2 is not a correct explanation for statement-1
C. Statement-1 is true, and statement-2 is False
D. Both the statements are false.
Answer : A

18. What will happen if ligaments are cut or broken?
A. No movements at joints.
B. Bones will become fixed.
C. Bones will become unfixed.
D. Bone will move freely at joints.
Answer : C

19. Mast cells are associated with
A. exocrine glands
B. endocrine glands
C. areolar connective tissue
D. neural tissue
Answer : C

20. Which of the following statement(s) regarding cell junctions is/are correct ?
A. Tight junctions help to stop substances from leaking across a tissue.
B. Adhering junctions perform cementing to keep neighbouring cells together.
C. Gap junctions facilitate the cells to communicate with each other by connecting the cytoplasm of adjoining cells, for rapid transfer of ions, small molecules and sometimes big molecules.
D. All of the above
Answer : D

21. Gizzard (proventriculus) in cockroach lies between
A. oesophagus and stomach
B. crop and mesenteron
C. mesenteron and ileum
D. oesophagus and crop
Answer : B

22. Tendons and ligaments are the examples of
A. areolar connective tissue
B. adipose tissue
C. dense regular connective tissue
D. loose connective tissue
Answer : C

23. Match the epithetial tissue given in column-I with its location given in column-II and choose the correct option.

Column I	Column II
(Epithelial tissue)	(Location)
A. Cuboidal	I. Epidermis of skin
B. Ciliated	II. Inner lining of blood vessels
C. Columnar	III. Inner surface of gall bladder
D. Squamous	IV. Inner lining of fallopian tube
E. Keratinized	V. Lining of pancreatic duct squamous

A. A V; B IV; C II; D III; E I
B. A III; B IV; C V; D II; E I
C. A V; B IV; C III; D II; E I
D. A III; B IV; C V; D I; E II
Answer : C

24. Statement 1 : Cartilage (protein matrix) and bone (calcium matrix) are rigid connective tissue.
Statement 2 : Blood is connective tissue in which plasma is the matrix.
A. Statement- 1 and statement-2 are true and statement-2 is a correct explanation for statement -1
B. Statement -1 and statement-2 are true and statement-2 is not a correct explanation for statement -1
C. Statement - 1 is true and statement- 2 is false
D. Both the statements are false.
Answer : B

25. In which one of the following preparations, cell junctions come across most frequently ?
A. Ligament
B. Tendon
C. Cartilage
D. Ciliated epithelium
Answer : D

26. Which of the following statement is correct regarding Female reproductive system of earthworm ?
A. It consists of two large ovaries, lying laterally in the 6th 7th abdominal segments.
B. Each ovary is formed of a group of five ovarian tubules or ovarioles, containing a chain of developing ova.
C. A pair of spermatheca is present in the 5th segment which opens into the genital chamber.
D. None of the above
Answer : D

27. In cockroach head can move in all directions due to
A. absence of neck.
B. fusion of all 6 segments of head.
C. flexible neck.
D. head is small and light weight.
Answer : C

28. The following figure shows the extarnal features of cockroach with few structures labelled as A, B, C, D, & E. Identify A to E .

A. A- Mesothorax, B-Pronotum, C-Metathorax, D-Tegmina, E-Anal style
B. A- Pronotum, B-Metathorax, C-Mesothorax, D-Tegmina, E-Sterna
C. A- Pronotum, B-Mesothorax, C-Metathorax, D-Tegmina, E-Anal cerci
D. A- Pronotum, B-Mesothorax, C-Metathorax, D-Tegmina, E-Anal style
Answer : C

29. Which of the following animals maintain ecological balance?
A. Frog
B. Rabbit
C. Earthworm
D. Cockroach
Answer : A

30. The intercellular material of the given figure is solid and resists compression. Identify the figure and the label marked as A & B.

A. Fig - Cartilage, A - Collagen, B - Collagen
B. Fig - Cartilage, A - Microtubule, B - Collagen fibres
C. Fig - Bone, A - Chondrocyte, B - Chondroclast
D. Fig - Bone, A - Chondroclast, B - Osteoblast
Answer : A

31. Match the types of connective tissue given in column-I with their examples given column-II and choose the correct option.

Column-I	Column-II
(Types of connective)	(Examples)
A. Loose connective	I. Tendons and ligaments tissue
B. Dense regular	II. Skin tissue
C. Dense irregular	III. Cartilage, bones, blood tissue
D. Specialized	IV. Fibroblasts, macrophages connective tissue and mast cells

A. A I; B IV; C II; D III
B. A I; B IV; C III; D II
C. A IV; B I; C II; D III
D. A IV; B II; C I; D III
Answer : C

32. Cockroaches are brown or black bodied animals that are included in class _______ of phylum _______.
A. reptilia; annelida
B. insecta; arthropoda
C. insecta; annelida
D. reptilia; arthropoda
Answer : B

33. Which of the following statement is/are correct regarding digestive system of cockroach ?

1. Mouth opens into a short tubular pharynx, leading to a narrow tubular passage called oesophagus.
2. Gizzard helps in grinding the food particles.
3. A ring of 6-8 blind tubules called hepatic or gastric caecae is present at the junction of foregut and midgut, which secrete digestive juice.
4. At the junction of midgut and hindgut is present another ring of 100-150 yellow coloured thin filamentous malphigian tubules which help in removal of excretory products from haemolymph.

A. Only (i)
B. Both (ii) and (iii)
C. Both (i) and (iv)
D. All of these
Answer : D

34. Male cockroach can be identified from the female by the presence of
A. long antennae
B. wingless body
C. elongated abdomen
D. anal styles
Answer : D

35. The blood of cockroach contains no respiratory pigment. It means that
A. cockroach does not respire.
B. respiration is anaerobic.
C. oxygen goes directly into tissues by diffusion.
D. oxygen goes directly into tissues by intracellular capillary system.
Answer : D

36. Find the incorrectly matched pair.
A. Unicellular glandular cells - Goblet cell
B. Saliva - Exocrine secretion
C. Fusiform fibres - Smooth muscle
D. Cartilage - Areolar tissue
Answer : D

37. Which of the following statements regarding frog is not correct?
A. Fertilization is external and takes place in water.
B. External ear and tympanum can be seen externally.
C. In females the ureters and oviduct open separately in the cloaca.
D. Copulatory pad on the first digit of the fore limbs and vocal sac are present in male frog.
Answer : B

38. Match the description given in column I with their examples given in column II and choose the correct option.

Column I	Column II
(Description)	(Example)
1. Aquatic respiratory	A. Skin organ
2. Organ which acts	B. Ureter urogenital duct and opens into the cloaca
3. A small median chamber	C. Cloaca that is used to pass faecal matter, urine and sperms to the exterior
4. A triangular structure	D. Sinus venosus which joins the right atrium and receives blood through vena cava

A. 1 - A, 2 - B, 3 - C, 4 - D
B. 1 - C, 2 - A, 3 - D, 4 - B
C. 1 - B, 2 - A, 3 - C, 4 - D
D. 1 - C, 2 - B, 3 - D, 4 - A
Answer : A

39. The chondrocytes of connective tissue are
A. fibre secreting cells
B. bone forming cells
C. cartilage cells
D. bone eating cells
Answer : C

40. The only type of cell seen in a tendon is
A. muscle fibres
B. reticular cells
C. collagenous cells
D. fibroblasts
Answer : D

41. The diagram given below represents the reproductive organ of male cockroach. Choose the correct labelling of the part of marked as A, B, C and D.

A. A 8th sternum, B - Anal cercus, C - 10th tergum, D - Anal style
B. A - 10th tergum, B - Anal cercus, C - Anal style, D - 8th sternum
C. A - Anal style, B - Anal cercus, C - 10th tergum, D- 8th sternum
D. A - Anal cercus, B - 8th sternum, C - 10th tergum, D - Anal style.
Answer : A

42. Which statement regarding anal cerci and anal style in cockroach is correct?
A. Anal cerci are absent but anal styles are present in male.
B. Anal cerci are absent and anal styles are present in female.
C. Anal styles are absent and anal cerci are present in male.
D. Anal styles are absent and anal cerci are present in female.
Answer : D

43. Identify figures-I and II.

Figure I Figure II
A. Dense regular Dense irregular connective tissue, connective tissue
B. Loose irregular Loose regular connective tissue, connective tissue
C. Adipose tissue, Specialized connective tissue
D. Connective tissue Areolar tissue proper
Answer : A

44. Epithelial tissue is distinguished from connective tissue, muscular, or nervous tissue by its
A. large extracellular matrix.
B. contractibility.
C. ability to carry action potentials.
D. basement membrane.
Answer : D

45. General function of gland is to
A. protect the body.
B. control the function of epithelial tissues.
C. produce and secrte specialized compounds to control and maintain different body functions.
D. help to maintain blood pressure and nerve actions.
Answer : C

46. The given figure shows open circulatory system of cockroach with structure marked as A, B and C. Which structure is a 13 pair of wing shaped involuntary muscles and mantain blood circulation?

A. A
B. B
C. C
D. Both A nad B
Answer : C

47. The secretions of endocrine glands are released directly
A. into the skin surface
B. into the blood stream
C. into a gland duct
D. into the brain tissue
Answer : B

48. Which of the following statement(s) is/are correct regarding compound epithelium ?
A. It is made of more than one layer of cells and thus has a limited role in secretion and absorption.
B. Their main function is to provide protection against chemical and mechanical stresses.
C. They cover the dry surface of the skin, moist surface of buccal cavity, pharynx, inner lining of ducts of salivary glands and pancreatic ducts.
D. All of the above
Answer : D

49. Statement 1: Typhlosole increases the effective area of absorption in the intestine.
Statement 2: Typhlosole, present in the intestine, is the characteristic feature of cockroach.
A. Statement 1 and 2 are true and statement 2 is the correct explanation of statement 1.
B. Statement 1 and 2 are true and statement 2 is not the correct explanation of statement 1.
C. Both statements 1 and 2 are false.
D. Statement 1 is true and statement 2 is false.
Answer : D

50. The supportive skeletal structures in the human external ears and in the nose tip are examples of
A. ligament
B. areolar tissue
C. bone
D. cartilage
Answer : D