Biology Chapter 15 test 2
PART-II CHAPTER NO. 15
1. Hypertonic
environment is also called as?
a. Hyposmotic b. Hyperosmotic c. Is-osmotic d. None of these
2. Homeostasis is the central requirement
in the maintenance of an organism and contributes in:
a. Evolution b. Adaptation c. Survival d. All of them
3. Which of
the following excretory structure is connected with blood circulatory system?
a. Nephredium b. Protonephredium c.
Metanephredium d. None of these
4. Most
Toxic nitrogenous waste which quickly dissolves in body fluids is:
a. Ammonia b. Uric
Acid c. Urea d. All of them
5. Which
Homeostatic function of the liver is controlled and monitored in the pancrease?
a. Deamination of amino acids b. Release of glucose
c. Release of iron d. Removal of Toxins
6. The
water content of mammalian blood is regulated by ADH. In which one of the
following parts of the Nephron does regulation occur?
a. The collecting duct b. The glomerulus
c. The
ascending limb of the loop of Henle d. The
proximal convoluted tubule
7. A
drug reduces mitochondrial activity in kidneys nephrons which chemical will be
present in increased amounts in urine?
a. Ammonia b. Glucose
c. Hydrogen carbonate d. Urea
8. Temperature
regulation with in the body is helped by:
a. Blood circulation b. Decreasing urination
c. Changing
rate of digestion d. None of these
9. On a
humid day, a person is uncomfortable because:
a. He/She is perspiring more b. There is less evaporation of
perspiration
c. The surface of skin is too dry d. Large amount of salt are excreted by the
skin
10. A part
through which protozoa excrete waste is:
a. Cell membrane b. Flame cell
c. Vacuole
d. All of these
11. The
primary mechanism of excreting nitrogenous wastes in animals is:
a. Ammonotely b. Ureotely c. Uricotely d. None
of them
12. Which of
the following is not synthesized in the liver?
a. Cholesterol b. Plasma
albumin c. Urea d. Vitamin
D
13. Why it is
must that concentration of ions in mammalian body fluids be kept constant?
a. To provide an absolute amount of
available ions
b. To
provide the correct osmotic pressure for body cells
c. To
provide sufficient ions for basal metabolism
d. To
provide diffusion gradients
14. What is
the function of deamination?
a. To obtain energy from proteins b. To produce urea
c. To remove excess amino acids d. to synthesize amino acids
15. If body
begins to lose more heat than it is generating then blood supply to skin is:
a. Reduced b. Increased
c. Maximized
d. Minimized
16. Identify
the ammonotelic vertebrate
a. Cartilaginous fishes b. Bony
fishes c. Reptiles d. Amphibia
17. Cell
shrinks when placed in which medium
a. Hypotonic b. Hypertonic
c. Isotonic
d. Non of them
18. Sunken
stomata is the characteristic of
a. Hydrophytes b. Halophytes
c. Xerophytes
d. Mesophytes
19. Specifically
concentrated urine is produced by:
a. Cortical Nephron b. Juxtamedullary
nephron c. Both a & b d. None of them
20. Secretion
of Antidiuretic hormone is inhibited when body fluids are:
a. Isoosmotic b. Hyposmotic c. Hyperosmotic d. Any
of them
21. Hypercalcemia
is a :
a. Metabolic disease b. Genetic
disease c. Pathogenic disease d. None of them
22. Which of
the following mechanism of Nephron prevents loss of useful substances?
a. Filteration b. Reabsorption
c. Secretion d. All of them
23. Constriction
of skin blood vessels:
a. Looses excessive heat b. Conserves heat
c. Causes perspiration d. None of them
24. Which of
the following is not endotherm?
a. Birds b. Mammals c. Amphibian d. Flying insect
25. Which one of the following results in a
lowering of blood sugar level when diabetics are injected with insulin?
a. Decreases respiration b. Decreases permeability of cells to
glucose
c. Decreases
rate of glucose absorption d. Increases
Glycogen synthesis
26. The thermostat
in human is present in which part of brain called:
a. Medulla b. Thalamus
c. Hypothalamus d. Cerebrum
27. Resistance to decay and insect attack to plants is provided
by:
a)
Sap wood b) Heart
wood c) Callus d.) Cork
28. Which of the followings is not mutagen?
a) Chemicals b)
Radiations c)
Water d) None of
them
29. Trigger of
hormones to heat production is:
a. Shivering thermogenesis b. Thermogenesis
c. Non-Shivering thermogenesis d. All of them
30. Of
the following which one is not an evolutionary adaptation of nitrogenous wastes
in the animal’s habitat?
a. Ammonotely b. Ureotely c. Uricotely d. None
31. Which of the following food stuff is
broken down to produce nitrogenous wastes in the body?
a. Carbohydrates b. Fats c. Proteins d. None of
these
32. Hydra has
no specialized excretory system because:
a. It does not produce waste material b. Its body is not very complex
c. The whole body cells are in contact
with water d. None of these
33. In insects
salt and water reabsorption takes place in the
a. Malpighian tubules b. Mid
gut c. Rectum d. Hemolymph
34. Chief
Nitrogenous waste produced by the grasshopper is
a. Ammonia b. Urea c. Uric Acid d. None of these
35. Heat loss
through skin occurs due to:
a. Vasodilation b. Vasoconstriction c. Vasospasm d. None
36. Which of
the following part of nephron is absent in cortex:
a. Bowman’s capsule b. Proximal convoluted tubule
c. Henle’s loop d. Distal convoluted tubule
37. Which of
the following part of nephron is under control of insulin?
a. Proximal Convoluted. b. Distal Convoluted
c. Henle’s Loop d. All of them
38. Movement of ground squirrel to burrows in midday heat is
an:
a) Behavioral
adaptation b) Structural
adaptation
c) Physiological
adaptation d) Morphological and physiological
adaptations
39. One
of the followings is not an effect of liver on Homeostasis
a. Oxygenation of tissues b. Energy reserves
c. Regulation of blood chemistry d. Removal of sebum
40. The chief waste
product of photosynthetic plants during day time is:
a. Oxygen b. Carbon dioxide
c. Water d. All of these
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