Biology For Class X - Chapter No. 2 - Homeostasis - Multiple Choice Questions And Fill In The Blanks By Sir Saeed Sarang

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CHAPTER 2 - Homeostasis

Multiple Choice Questions And Fill In The Blanks

Special Thanks To Sir Saeed Sarang (Sindh Text Book Board)
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MULTIPLE CHOICE QUESTIONS
Choose the correct answer:
i) The internal condition of an organism is referred as:
(a) Homeostasis
(b) Internal environment ✓
(c) Internal metabolism
(d) Feedback mechanism

ii) A set of metabolism reaction which maintain internal environment is:
(a) Positive feedback
(b) Negative feedback
(c) Osmoregulation
(d) Homeostasis ✓

iii) Removal of extra liquid water is:
(a) Exudation
(b) Guttation ✓
(c) Respiration
(d) Transpiration

iv) Plant grow near coastal area called:
(a) Xerophyte
(b) Halophyte ✓
(c) Epiphyte
(d) Hygrophyte

v) Organ of human body which is considered on the largest organ is:
(a) Skin ✓
(b) Digestive tract
(c) Liver
(d) Brain

vi) The maintenance of body temperature with in suitable limit is called
(a) Homeotherm
(b) Thermoregulation ✓
(c) Osmoregulation
(d) Heterotherm

vii) The kidney is enclosed in a membrane called
(a) Pericardium
(b) Peritoneum ✓
(c) Pleural membrane
(d) Plumule

viii) The network of blood capillaries present in the layer of skin:
(a) Epidermis
(b) Dermis ✓
(c) Hypodermis
(d) Endodermis

ix) Selective reabsorption in nephron takes place at
(a) Glomerulus
(b) Malpighian body
(c) Convulated tubules
(d) Loop of Henle's ✓

x) The hormone ADH release from
(a) Pituitary gland ✓
(b) Kidneys
(c) Liver
(d) Lungs

xi) Set point of human body temperature is:
a) 27°C
b) 37°C ✓
c) 47°C
d) 57°C

MORE MULTIPLE CHOICE QUESTIONS

12. Organisms maintain internal condition by:
a) feedback mechanism ✓
b) thermoregulation
c) osmoregulation
d) guttation

13. When the rate of photosynthesis will be higher than respiration the plant gets:
a) extra O₂ from the air and release extra CO₂ in air through stomata
b) extra CO₂ from the air and release extra O₂ in air through stomata ✓
c) extra CO₂ from th air and release extra H₂O in air through stomata
d) extra O₂ from the air and release extra H₂O in air through stomata

14. It is the maintenance of internal water and salt conditions by osmosis:
a) homeotherm
b) thermoregulation
c) osmoregulation ✓
d) heterotherm

15. The removal of water in the form of vapour from the aerial part of a plant is called:
a) exudation
b) guttation
c) respiration
d) transpiration ✓

16. Transpiration occurs at/in:
a) day time only ✓
b) night time only
c) both day & night
d) windy conditions

17. Guttation occurs from the margin of leaves through special pores called:
a) glomerulus
b) epidermis
c) plumule
d) Hydathodes ✓

18. The plants which grow in fresh water are called:
a) Hydrophytes ✓
b) Halophytes
c) Mesophytes
d) Xerophytes

19. Hydrilla is a:
a) Hydrophytes ✓
b) Halophytes
c) Mesophytes
d) Xerophytes

20. Plants grow in the soil of low water quantity are called:
a) Hydrophytes
b) Halophytes
c) Mesophytes
d) Xerophytes ✓

21. They grow in desert or steep slopes or at high altitude:
a) Hydrophytes
b) Halophytes
c) Mesophytes
d) Xerophytes ✓

22. Cacti is an example of:
a) Hydrophytes
b) Halophytes
c) Mesophytes
d) Xerophytes ✓

23. Amoeba and paramecium pump out excess of water by:
a) Skin
b) Gills
c) Contractile vacuole ✓
d) Kidneys

24. Bodies or cells of fresh water animals have:
a) Hypertonic conditions ✓
b) hypotonic conditions
c) isotonic conditions
d) None of these

25. The removal of nitrogenous metabolic waste is called:
a) Metabolism
b) Excretion ✓
c) Respiration
d) Exudation

26. Metanephridia is an excretory organ of:
a) Planaria
b) Earthworm ✓
c) Cockroach
d) Arthropods

27. The excretory organ of a cockroach is:
a) Flame cell
b) Metanrphridia
c) Malphigian tubules ✓
d) Kidney

28. They are / It is called filter(s) of the body fluid:
a) Skin
b) Lungs
c) Liver
d) Kidneys ✓

29. Human skin consists of:
a) Two layers
b) Three layers ✓
c) Four layers
d) Five layers

30. The outer layer of skin is called:
a) Epidermis ✓
b) Dermis
c) Hypodermis
d) Keratin

31. It is made up of flat, dead cells containing keratin protein:
a) Hypodermis
b) Dermis
c) Epidermis ✓
d) Creatinine

32. This layer of the skin contains receptors and sweat glands:
a) Creatinine
b) Epidermis
c) hypodermis
d) derm ✓

33. Which statement is correct?
a) Eidermis is the layer present between dermis and hypodermis.
b) Dermis is the layer present between the epidermis and hypodermis. ✓
c) Hypodermis is the layer present between the dermis and epidermis.
d) Double layers of hypodermis are present between dermis and epidermis.

34. Hair follicles, sebaceous glands and a network of arterioles are present in:
a) dermis ✓
b) hypodermis
c) keratin
d) epidermis

35. The innermost layer of the skin is:
a) epidermis
b) dermis
c) hypodermis ✓
d) keratin

36. Which statement is correct?
a) Hypodermis contains hair follicles and a network of arterioles.
b) Hypodermis contains fats and stores energy. ✓
c) Hypodermis contains sebaceous glands which secrete oily sebum.
d) Hypodermis contains sweat glands that secrete sweat on ho surface to maintain temperature.

37. The level of H⁺ in the blood is continuously monitored by special detectors (receptors):
a) Carotid bodies
b) Aortic bodies
c) Both of them ✓
d) None of these

38. Each kidney has as area in the center of concave surface which faces the vertebral column; this area is called:
a) Peritoneum
b) Cortex
c) Pelvis
d) Hilus ✓

39. A fluid is filled in between peritoneum and kidney are called:
a) Peritoneal fluid ✓
b) Peritoneum fluid
c) Hilus fluid
d) Peritoneum liquid

40. It is covered and protected by a fibrous capsule:
a) Cortex ✓
b) Medulla
c) Pelvis
d) Hilus

41. It is the inner lighter portion of the kidney:
a) Cortex
b) Medulla ✓
c) Pelvis
d) Hilus

42. It contains the conical projection called renal pyramids:
a) Pelvis
b) Cortex
c) Hilus
d) Medulla ✓

43. Each afferent arteriole divides into numerous blood capillaries in Bowman's capsule are collectively called:
a) Malpighian body
b) Renal corpuscle
c) Glomerulus ✓
d) loop of Henle's

44. Bowman's capsule with glomerulus is collectively called:
a) Malpighian body
b) Renal corpuscle
c) Both 'a' & 'b' ✓
d) None of these

45. Ultra-filtration occurs at:
a) Malpighian body ✓
b) glomerulus
c) proximal convoluted tubules
d) distal convoluted tubules

46. In the kidney, selective reabsorption occurs at:
a) Mapighian body
b) renal corpuscle
c) glomerulus
d) loop of Henle's ✓

47. They are the functional unit of the kidney:
a) renal corpuscles
b) Nephrons ✓
c) Malpighian bodies
d) Glomerulus

48. Urea is formed in:
a) Kidney
b) Pancreas
c) Liver ✓
d) Gall bladder

49. Kidney stone is a solid mass made of:
a) Calcium oxalate
b) Calcium carbonate
c) Both 'a' & 'b' ✓
d) None of these

Fill In The Blanks:

1. Homeostasis is set of metabolism which maintain internal environment of an organism within suitable limits.
2. Organisms maintain internal condition by feedback mechanism.
3. There are three main aspects of homeostasis i.e. osmoregulation, thermoregulation and excretion.
4. Osmoregulation is the maintenance of internal water and salt condition by osmosis.
5. Thermoregulation is the maintenance of temperature within suitable limits where enzymes can work optimumly.
6. Excretion is the process where metabolic toxic wastes, excess substances remove from body.
7. Hydrophytes are the plants which grow in fresh water.
8. Halophytes grow in sea marshes or in saltish water.
9. Mesophytes are the plants grow in moderate water containing soil.
10. Xerophytes are the plants grow in soil of low water quantity.
11. The main organs involved in human homeostasis are skin, lungs and kidneys.
12. Human skin is consist of three layers called epidermis, dermis and hypodermis.
13. Body temperature when rise body produce sweat, hair lies flat, vasodilation.
14. When body temperature decrease the erection of hairs, vasocontraction, decrease in sweat production and increase in metabolic rate occurs.
15. Lungs keep the CO₂ concentration at low level.
16. Kidneys maintain blood composition by maintain level of H₂O, solutes and nitrogenous waste by the process of filtration and reabsorption.
17. Kidneys are situated at the dorsal side of the abdominal cavity on either side of the vertebral column.
18. Nephrons are functional unit of kidney.
19. Urea is formed in liver and excreted from kidneys.
20. Mixture of urea, creatinine, uric acid and water called urine.
21. Kidney stone is a solid mass made of calcium oxalate or carbonate crystals.
22. Kidney failure patient can be treated with dialysis machine, dialysis machine performs the function of a kidney.