ESIC - Structural Organization In Animals 1000+ MCQ [Solved] PDF Download

1. 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

2. 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

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

4. 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

5. 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

6. 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

7. 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

8. 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

9. The mouth parts of cockroach are
A. cutting and biting type.
B. piercing and sucking type.
C. sucking and rasping type.
D. sucking and siphoning type.
Answer : A

10. 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

11. A student was given a specimen to identify on the basis of the characteristics given below.

1. They are metamerically segmented.
2. Presence of closed circulatory system.
3. They have circular and longitudinal muscles for locomotion.

Identify the specimen.
A. Frog
B. Pheretima
C. Cockroach
D. Rabbit
Answer : B

12. Figure given below shows reproductive system of female cockroach. The correct labellings indicated by alphabets (A, B & C) are respectively

A. A-Spermatheca, B-Collaterial glands, C-Gonapophyses
B. A-Phallic gland, B-Collaterial glands, C-Gonapophyses
C. A-Spermatheca, B-Seminal vesicle, C-Gonapophyses
D. A-Spermatheca, B-Collateral glands, C-Tegmina
Answer : A

13. 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 molecule.
D. All of the above
Answer : D

14. What are the three basic components of connective tissues?
A. Ground substance, cells and basement membrane
B. Cartilage, intercellular matrix and serum
C. Cells, protein fibers and ground substance
D. Collagen, elastin and reticular fibers
Answer : C

15. 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

16. 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

17. 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

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

19. If the head of cockroach is cut off, it will still alive for as long as one week. It is because of
A. the body which is covered with a hard chitinous exoskeleton.
B. head which holds a bit of nervous system.
C. head which is of no use.
D. food capturing appratus which is found elsewhere.
Answer : C

20. 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

21. Match column-I with column-II and choose the correct option.

Column-I	Column-II
A. Periplaneta	I. Hepatic caecae americana
B. A ring of 6-8 blind	II. Phylum arthropoda tubules
C. Vascular system	III. Spiracles
D. 10 pairs of small	IV. Malpighian tubules holes
E. Excretion	V. Open type

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

22. Which of the following animal's sensory system does not has eyes but does possess light and touch sensitive organs (receptor cells) to distinguish the light intensities and to feel the vibrations in the ground?
A. Frog
B. Snake
C. Earthworm
D. Cockroach
Answer : C

23. 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

24. 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

25. The ciliated columnar epithelial cells in humans occur in
A. Eustachian tube and stomach lining
B. bronchioles and fallopian tubes
C. bile duct and oesophagus
D. fallopian tubes and urethra
Answer : B

26. 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

27. The frog never drinks water but absorbs it through one of its respiratory organ. Identify the organ.
A. Skin
B. Lung
C. Buccal cavity
D. None of the above.
Answer : A

28. 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

2. 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

30. 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

31. The given figure shows the digestive system of cockroach with few structures marked as A, B, C and D. Identify structures A to D.

A. A-Gizzard, B-Crop, C-Hepatic caecae, D-Malpighian tubules
B. A-Crop, B-Gizzard, C-Hepatic caecae, D-Malpighian tubules
C. A- Crop, B-Gizzard, C-Malpighian tubules, D-Hepatic caecae
D. A- Gizzard, B-Crop, C-Malpighian tubules, D-Hepatic caecae
Answer : B

32. 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

33. 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

34. Smooth muscles are______.
A. voluntary, branched, uninucleate
B. voluntary, multinucleate, cylindrical
C. involuntary, cylindrical, multinucleate
D. involuntary, spindle shaped, uninucleated, tapering
Answer : D

35. Match column-I (type of epithelium) with column-II (Description) and choose the correct option.

Column-I	Column-II
(Types of epithelium)	(Description)
A. Squamous	I. It is composed of a epithelium single-layer of cube-like cells
B. Cuboidal	II. Having cilia on their free epithelium surface
C. Columnar	III. It is composed of a single epithelium layer of tall and slender cells
D. Ciliated	IV. It is made up of a single thin epithelium layer of flattened cells with irregular boundaries

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

36. Which one of the following pairs of structures distinguishes a nerve cell from other types of cell ?
A. Vacuoles and Fibres
B. Flagellum and Medullary sheath
C. Nucleus and Mitochondria
D. Cell body and Dendrites
Answer : D

37. Identify the figure with its correct function Fig :. Adipose connective tissue

A. Areolar connective tissue Serves as a support framework for epithelium.
B. Adipose tissue Store fats and act as heat insulators.
C. Dense regular tissue Provide flexibility.
D. Dense irregular tissue Provide strength and elasticity.
Answer : B

38. Consider the following statements regarding cockroach and mark the correct option.

1. Head is formed by the fusion of 6-segments.
2. Mouth parts are biting and chewing type.
3. Crop is the part of mid gut.

A. Only (ii) is correct
B. (ii) and (iii) are correct
C. (i) and (ii) are correct
D. Only (iii) is correct
Answer : C

39. 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

40. Read the following statements.

1. It is a contractile tissue present only in the heart.
2. Cell junctions fuse the plasma membranes of these cells and make them stick together.
3. Communication juntions at some fusion points allow the cells to contract as a unit, i.e., when one cell receives a signal to contract, its neighbours are also stimulated to contract.

Which of the following type of tissue is being described by the above statements ?
A. Skeletal muscle
B. Cardiac muscle
C. Smooth muscle
D. Cartilage
Answer : C

41. 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

42. Which of the following statement is incorrect regarding cuboidal epithelium ?
A. It is an epithelial tissue.
B. It is composed of a single layer of cube-like cells.
C. They are found in the walls of blood vessels and air sacs of lungs.
D. Secretion and absorption are the main functions of these tissue.
Answer : C

43. In the given diagram of areolar connective tissue, the different cells and parts have been marked by alphabets (A, B, C & D). Choose the answer in which these alphabets correctly match with the parts and cells they indicate.

A. A-Adipocyte, B-Collagen fibres, C-Microfilament, D-Mast cells
B. A-Macrophage, B-Collagen fibres, C-Microfilament, D-Mast cells
C. A-Macrophage, B-Collagen fibres, C-Microtubule, D-RBC
D. A-Macrophage, B-Fibroblast, C-Collagen fibres, D-Mast cells
Answer : D

44. What external changes are visible after the last moult of a cockroach nymph?
A. Development of anal cerci.
B. Development of both forewings and hind wings.
C. Development labium.
D. Mandibles become harder.
Answer : B

45. Cartilage tissues are likely to be slow in healing following an injury because
A. cartilage cells cannot reproduce.
B. they lack direct blood supplies.
C. the intercellular material is missing.
D. cartilage cells are surrounded by fluids.
Answer : B

46. Read the following statements and answer the question.

1. It is made of a single thin layer of flattened cells with irregular boundaries.
2. They are found in the walls of blood vessels and air sacs of lungs.
3. They are involved in functions like forming a diffusion boundary.

Which of the following characteristics of tissue is being described by the above statements ?
A. Squamous epithelium
B. Columnar epithelium
C. Ciliated epithelium
D. Compound epithelium
Answer : A

47. The figure given below shows the head region of cockroach. Identify A to F.

A. A- Compound eye, B-Ocellus, C-Maxilla, D-Mandible, E-Labrum, F-Labium
B. A- Ocellus, B-Compound eye, C-Mandible, D-Maxilla, E-Labrum, F-Labium
C. A- Ocellus, B-Compound eye, C-Mandible, D-Maxilla, E-Labium, F-Labrum
D. A- Ocellus, B-Compound eye, C-Maxilla, D-Mandible, E-Labrum, F-Labium
Answer : B

48. Intercalated discs are the communication junctions between the cells of
A. cardiac muscles
B. striped muscles
C. adipose tissue
D. nerve and striated muscles
Answer : A

49. The fibres of which of the following muscles are fusiform and do not show striations
A. Skeletal muscles
B. Cardiac muscles
C. Both (a) and (b)
D. Smooth muscles
Answer : D

50. 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