FORTIUS - PYQ based Unit Test # 4 (OLD NCERT)

Botany - Section A

1.

In glycolysis, during oxidation electrons are removed by -
1. Glyceraldehyde-3-phosphate
2. NAD⁺
3. Molecular oxygen
4. ATP

2.

The first stable product of fixation of atmospheric nitrogen in leguminous plants is
1. ${NO}_{2}^{-}$
2. ammonia
3. ${NO}_{3}^{-}$
4. glutamate

3.

The free-living, anaerobic nitrogen-fixer is
1. Beijerinckia
2. Rhodospirillum
3. Rhizobium
4. Azotobacter

4.

The deficiencies of micronutrients, not only affects growth of plants but also vital functions such as photosynthetic and mitochondrial electron flow. Among the list given below, which group of three elements shall affect most, both photosynthetic and mitochondrial electron transport -
1. Ca, K, Na
2. Co, Ni, Mo
3. Mn, Co, Ca
4. Cu, Mn, Fe

5.

Match the following concerning essential elements and their functions in plants :

(a)	Iron	(i)	Photolysis of water
(b)	Zinc	(ii)	Pollen germination
(c)	Boron	(iii)	Required for chlorophyll biosynthesis
(d)	Manganese	(iv)	IAA biosynthesis

Select the correct option:

	(a)	(b)	(c)	(d)
1.	(iv)	(iii)	(ii)	(i)
2.	(iii)	(iv)	(ii)	(i)
3.	(iv)	(i)	(ii)	(iii)
4.	(ii)	(i)	(iv)	(iii)

6.

For assimilation of one CO₂ molecule in C₃ plants, the energy required in form of ATP and NADPH₂is

1.	2 ATP & 2 NADPH₂	2.	5 ATP & 3 NADPH₂
3.	3 ATP & 2 NADPH₂	4.	18 ATP & 12 NADPH₂

7.

In Hatch and Slack pathway, the primary CO₂ acceptor is -

1.	Oxaloacetic acid	2.	Phosphoglyceric acid
3.	Phosphoenol pyruvate	4.	RuBisCO

8.

Vernalisation stimulates flowering in -
1. Turmeric
2. Carrot
3. Ginger
4. Zaminkand

9.

An element playing important role in nitrogen fixation is
1. molybdenum
2. copper
3. manganese
4. zinc

10.

Leguminuous plants are able to fix atmoshpheric nitrogen through the process of symbiotic nitrogen fixation. Which one of the following statement is not correct during this process of nitrogen fixation ?
1. Nodules act as sites for nitrogen fixation
2. The enzyme nitrogenase catalyses the conversion of atmospheric N₂ to NH₃
3. Nitrogenase is insensitive to oxygen
4. Leghamoglobin scavenges oxygen and pinkish in color.

11.

Which one is the correct sequence occurring in glycolysis?
1. G-6-P →PEP →3-PGAL →3-PGA
2. G-6-P →3-PGAL → 3-PGA →PEP
3. G-6-P →PEP →3-PGA →3-PGAL
4. G-6-P →3-PGA →3-PGAL →PEP

12.

Xylem translocates:
1. Water, mineral salts, some organic nitrogen and hormones
2. Water only
3. Water and mineral salts only
4. Water, minerals and some organic nitrogen only

13.

Which of the following statements is incorrect?

1.	ATP is synthesized through complex V.
2.	Oxidation-reduction reactions produce proton gradient in respiration.
3.	During aerobic respiration, the role of oxygen is limited to the terminal stage.
4.	In ETC (Electron Transport Chain), one molecule of NADH+H⁺ gives rise to 2ATP molecules, and one FADH₂ gives rise to 3 ATP molecules.

14.

You are given a tissue with its potential for differentiation in an artificial culture. Which of the following pairs of hormones would you add to the medium to secure shoots as well as roots?
1. IAA and gibberellin
2. Auxin and cytokinin
3. Auxin and abscisic acid
4. Gibberellin and abscisic acid

15.

Aerobic respiratory pathway is appropriately termed

1.	catabolic	2.	parabolic
3.	amphibolic	4.	anabolic

16.

The chemiosmotic coupling hypothesis of oxidative phosphorylation proposes that adenosine triphosphate (ATP) is formed because

1.	there is a change in the permeability of the inner mitochondrial membrane toward adenosine diphosphate (ADP)
2.	high energy bonds are formed in mitochondrial proteins
3.	ADP is pumped out of the matrix into the intermembrane space
4.	a proton gradient forms across the inner membrane

17.

Oxygen is not produced during photosynthesis by

1.	Green sulphur bacteria	2.	Nostoc
3.	Cycas	4.	Chara

18.

Match List - I with List-II.

	List-I		List-II
(a)	Cohesion	(i)	More attraction in liquid phase
(b)	Adhesion	(ii)	Mutual attraction among water molecules
(c)	Surface tension	(iii)	Water loss in liquid phase
(d)	Guttation	(iv)	Attraction towards polar surfaces

Choose the correct answer from the options given below.

	(a)	(b)	(c)	(d)
1.	(iii)	(i)	(iv)	(ii)
2.	(ii)	(i)	(iv)	(iii)
3.	(ii)	(iv)	(i)	(iii)
4.	(iv)	(iii)	(ii)	(i)

19.

Select the incorrect statement.
1. Transport of molecules in phloem can be bidirectional.
2. The movement of minerals in the xylem is unidirectional.
3. Unloading of sucrose at the sink does not involve the utilization of ATP.
4. Elements most easily mobilized in plants from one region to another are phosphorus, sulfur, nitrogen, and potassium.

20.

In Kranz anatomy, the bundle sheath cells have

1.	thick walls, many intercellular spaces and few chloroplasts
2.	thin walls, many intercellular spaces and no chloroplasts
3.	thick walls, no intercellular spaces and large number of chloroplasts
4.	thin walls, no intercellular spaces and several chloroplasts

21.

Which one of the following generally acts as an antagonist to gibberellins ?

1.	Ethylene	2.	ABA
3.	IAA	4.	Zeatin

22.

Which one of the following is not a micronutrient?
1. Molybdenum
2. Magnesium
3. Zinc
4. Boron

23.

The plant hormone used to destroy weeds in a field is:

1.	2, 4-D	2.	IBA
3.	IAA	4.	NAA

24.

Which of the following statements is incorrect?

1.	Grana lamellae have both PSI and PS II.
2.	Cyclic photophosphorylation involves both PS I and PS II.
3.	Both ATP and NADPH+H⁺ are synthesised during non-cyclic photophosphorylation.
4.	Stroma lamellae have PS I only and lack NADP reductase.

25.

“Foolish seedling" disease of rice led to the discovery of:

1.	GA	2.	ABA
3.	2,4-D	4.	IAA

26.

The water potential of pure water is:
1. Less than zero
2. More than zero but less than one
3. More than one
4. Zero

27.

The maximum growth rate occurs in:-

1.	Senescent phase	2.	Lag phase
3.	Exponential phase	4.	Stationary phase

28.

Casparian bands are found in:

1.	Endodermis	2.	Pericycle
3.	Periderm	4.	Cortex

29.

Effect of light and dark rhythm on plants is known as:
1. Photonasty
2. Phototropism
3. Photoperiodism
4. Photomorphogenesis

30.

Which of the following is not a feature of active transport of solutes in plants ?
1. Occurs against concentration gradient
2. Non-selective
3. Occurs through membranes
4. Requires ATP

31. The number of time(s) decarboxylation of isocitrate occurs during single TCA cycle is :

1.	One	2.	Two
3.	Three	4.	Four

32. Match List-I with List-II

	List-I		List-II
(a)	Porins	(i)	Pink coloured nodules
(b)	leg haemoglobin	(ii)	Lumen of thylakoid
(c)	H⁺ accumulation	(iii)	Amphibolic pathway
(d)	Respiration	(iv)	Huge pores in outer membrane of mitochondria

Choose the correct answer from the options given below :

	(a)	(b)	(c)	(d)
1.	(ii)	(i)	(iv)	(iii)
2.	(iv)	(i)	(ii)	(iii)
3.	(iii)	(iv)	(ii)	(i)
4.	(ii)	(iv)	(i)	(iii)

33.

Opening and closing of stomata is due to the : -
1. Hormonal change in guard cells
2. Change in Turgor pressure of guard cells
3. Gaseous exchange
4. Respiration

34.

In order to increase the yield of sugarcane crop, which of the following plant growth regulators should be sprayed ?

1.	Ethylene	2.	Auxins
3.	Gibberellins	4.	Cytokinins

35.

The living differentiated cells, that lost the capacity to divide anymore, can regain the capacity of division under certain conditions. This phenomenon is termed as:

1.	Redifferentiation	2.	Maturation
3.	Differentiation	4.	Dedifferentiation

Botany - Section B

36.

Photosynthesis in C₄ plants is relatively less limited by atmospheric $C O_{2}$ levels because

1.	The primary fixation of CO₂ is mediated via PEP carboxylase
2.	Effective pumping of CO₂ into bundle sheath cells
3.	Four carbon acids are the primary initial CO2 fixation products
4.	RuBisCO in C₄ plants has a higher affinity for CO₂

37.

For its action, nitrogenase requires :
1. Light
2. Mn²⁺
3. Super oxygen radicals
4. High input of energy

38.

Function of companion cells is :
1. Loading of sucrose into sieve elements
2. Providing energy to sieve elements for active transport
3. Providing water to phloem
4. Loading of sucrose into sieve elements by passive transport

39.

The energy-releasing metabolic process in which substrate is oxidized without an external electron acceptor is called

1.	glycolysis	2.	fermentation
3.	aerobic respiration	4.	photorespiration

40.

In mitochondria, protons accumulate in the :

1.	Matrix	2.	Outer membrane
3.	Inner membrane	4.	Intermembrane space

41.

Boron in green plants assists in : -
1. Activation of enzymes
2. Acting of enzyme cofactor
3. Photosynthesis
4. Sugar transport

42.

In Glycine max, the product of biological nitrogen fixation is transported from the root nodules to other parts as:
1. Ammonia
2. Glutamate
3. Nitrates
4. Ureides

43.

Which of the following statement regarding mitochondrial membrane is not correct?

1.	Outer membrane resembles a sieve
2.	Outer membrane is permeable to all kinds of molecules
3.	Enzymes of electron transport chain are embedded in outer membrane
4.	Inner membrane is highly convoluted, forming a series of infoldings

44.

Fruit and leaf drop at early stages can be prevented by the application of

1.	cytokinins	2.	ethylene
3.	auxins	4.	gibberellic acid

45.

In light reaction, plastoquinone facilitates the transfer of electrons from:

1.	Cyt b₆f complex to PS-I
2.	PS-I to NADP⁺
3.	PS-I to ATP synthase
4.	PS-II to Cytb₆f complex

46.

Oxidative phosphorylation is

1.	formation of ATP by transfer of phosphate group from a substrate to ADP
2.	oxidation of phosphate group in ATP
3.	addition of phosphate group to ATP
4.	formation of ATP by energy release from electrons removed during substrate oxidation

47.

After glycolysis, the fate of glucose in the mitochondrial matrix is
1. oxidation
2. reduction
3. oxidative decarboxylation
4. hydrolysis

48. Study the pathway given below. In which of the following options, correct words for all the three blanks a, b and c are indicated?

	(a)	(b)	(c)
1.	Carboxylation	Decarboxylation	Reduction
2.	Decarboxylation	Reduction	Regeneration
3.	Fixation	Transamination	Regeneration
4.	Fixation	Decarboxylation	Regeneration

49. When one CO₂ molecule is fixed as one molecule of triose phosphate, which of the following photochemically made, high energy chemical intermediates are used in the reduction phase?

1.	1 ATP + 1 NADPH	2.	1 ATP + 2 NADPH
3.	2 ATP + 1 NADPH	4.	2 ATP + 2 NADPH

50.

Which of the following is not an inhibitory substance governing seed dormancy?
1. Abscisic acid
2. Phenolic acid
3. Para-ascorbic acid
4. Gibberellic acid

Zoology - Section A

51.

Human urine is usually acidic because

1.	hydrogen ions are actively secreted into the filtrate.
2.	the sodium transporter exchanges one hydrogen ion for each sodium ion, in peritubular capillaries.
3.	excreted plasma proteins are acidic.
4.	Potassium and sodium exchange generates acidity.

52.

Identify the correct statement with reference to human digestive system
1. Serosa is the innermost layer of the alimentary canal
2. Ileum is a highly coiled part
3. Vermiform appendix arises from duodenum
4. Ileum opens into small intestine

53.

Given below is the ECG of a normal human. Which one of its components is correctly interpreted below?

1.	Peak P- Initiation of left atrial contraction only
2.	Complex QRS- One complete pulse
3.	Peak T- Initiation of total cardiac contraction
4.	Peak P and Peak R together- systolic and diastolic blood pressures

54.

A baby boy aged two years is admitted to play school and passes through a dental check-up. The dentist observed that the boy had twenty teeth. Which teeth were absent in the boy?
1. Canines
2. Pre-molars
3. Molars
4. Incisors

55.

An acromion process is characteristically found in the
1. Skull of frog
2. Sperm of mammals
3. Pelvic girdle of mammals
4. Pectoral girdle of mammals

56.

Due to increasing air-borne allergens and pollutants, many people in urban areas are suffering from a respiratory disorder causing wheezing due to:
1. reduction in the secretion of surfactants by pneumocytes
2. benign growth on the mucous lining of nasal cavity
3. inflammation of bronchi and bronchioles
4. proliferation of fibrous tissues and damage of the alveolar walls

57.

Which of the following options best represents enzyme composition of pancreatic juice?
1. Amylase, peptidase, trypsinogen, rennin
2. Amylase, pepsin, trypsinogen, maltase
3. Peptidase, amylase, pepsin, rennin
4. Lipase, amylase, trypsinogen, procarboxypeptidase

58.

Tidal Volume and Expiratory Reserve Volume of an athlete are 500 mL and 1000 mL respectively. What will be his Expiratory Capacity if the Residual Volume is 1200 mL?
1. 2700 mL
2. 1500 mL
3. 1700 mL
4. 2200 mL

59.

Which one of the following hormones though synthesized elsewhere, is stored and released by the master gland?
1. Melanocyte stimulating hormone
2. Antidiuretic hormone
3. Luteinizing hormone
4. Prolactin

60.

Match the following columns and select the correct option:

	Column-I		Column-II
(a)	Pituitary hormone	(i)	Steroid
(b)	Epinephrine	(ii)	Neuropeptides
(c)	Endorphins	(iii)	Peptides, proteins
(d)	Cortisol	(iv)	Biogenic amines

	(a)	(b)	(c)	(d)
1.	(iv)	(i)	(ii)	(iii)
2.	(iii)	(iv)	(ii)	(i)
3.	(iv)	(iii)	(i)	(ii)
4.	(iii)	(iv)	(i)	(ii)

61.

Which of the following receptors are specifically responsible for maintenance of balance of body and posture ?
1. Basilar membrane and otoliths
2. Hair cells and organ of corti
3. Tectorial membrane and macula
4. Crista ampullaris and macula

62.

Which one of the following statements is correct regarding blood pressure?

1.	100/55 mm Hg is considered an ideal blood pressure
2.	105/50 mm Hg makes one very active
3.	190/110 mm Hg may harm vital organs like brain and kidney
4.	130/90 mm Hg is considered high and requires treatment

63.

The transparent lens in the human eye is held in its place by
1. Smooth muscles attached to the iris.
2. Ligaments attached to the iris.
3. Ligaments attached to the ciliary body.
4. Smooth muscles attached to the ciliary body.

64.

Select the correct statement :

1.	Atrial Natriuretic Factor increases blood pressure.
2.	Angiotensin II is a powerful vasodilator.
3.	Counter current pattern of blood flow is not observed in the vasa recta.
4.	Reduction in Glomerular Filtration Rate activates JG cells to release renin.

65.

Which of the following is associated with a decrease in cardiac output?
1. Sympathetic nerves
2. Parasympathetic neural signals
3. Pneumotaxic center
4. Adrenal medullary hormones

66.

Which one of the following is the correct difference between rod cells and cone cells of our retina?

	Features	Rod cells	Cone cells
(a)	Visual acuity	High	Low
(b)	Visual pigment contained	Iodopsin	Rhodopsin
(c)	Overall function	Vision in poor light	Colour vision and detailed vision in bright light
(d)	Distribution	More concentrated in centre of retina	Evenly distributed all over retina

1. a
2. b
3. c
4. d

67.

Kwashiorkor disease is due to
1. simultaneous deficiency of proteins and fats
2. simultaneous deficiency of proteins and calories
3. deficiency of carbohydrates
4. protein deficiency not accompanied by calorie deficiency

68.

Given diagram shows bone of the left human hind limb as seen from front. It has certain mistakes in labeling. Two of the wrongly labelled bones are

1.	tibia and tarsals	2.	femur and fibula
3.	fibula and phalanges	4.	tarsals and femur

69.

During muscular contraction, which of the following events occur?
(i) H-zone disappears
(ii) A band widens
(iii) I band reduces in width
(iv) Width of A band is unaffected
(v) M line and Z line come closer

1.	(i), (iii), (iv) and (v)	2.	(i), (ii) and (v)
3.	(ii), (iv) and (v)	4.	(i), (ii) and (iii)

70.

Select the correct statement:

1.	Expiration occurs due to external intercostal muscles.
2.	Intrapulmonary pressure is lower than atmospheric pressure during inspiration.
3.	Inspiration occurs when atmospheric pressure is less than intrapulmonary pressure.
4.	Expiration is initiated due to the contraction of the diaphragm.

71.

Identify the cells whose secretion protects the lining of gastro-intestinal tract from various enzymes.
1. Duodenal cells
2. Chief cells
3. Goblet cells
4. Oxyntic cells

72.

The intrinsic factor that helps in the absorption of vitamin $B_{12}$ is secreted by-
1. Goblet cells
2. Hepatic cells
3. Oxyntic cells
4. Chief cells

73.

Which of the following stimulates the secretion of gastric juice:
1. Gastrin
2. Enterogasterone
3. Secretin
4. Hepatocrinin

74.

In mammalian eye, the 'fovea' is the center of the visual field where
1. high density of cones occur, but has no rods
2. the optic nerve leaves the eye
3. only rods are present
4. more rods than cones are found

75.

What will happen if the secretion of parietal cells of gastric glands is blocked with an inhibitor?
1. Gastric juice will be deficient in chymosin
2. Gastric juice will be deficient in pepsinogen
3. In the absence of HCl secretion, inactive pepsinogen is not converted into the active enzyme pepsin
4. Enterokinase will not be released from the duodenal mucosa and so trypsinogen is not converted to trypsin

76. Match the following structures with their respective location in organs:

(a)	Crypts of Lieberkuhn	(i)	Pancreas
(b)	Glisson’s Capsule	(ii)	Duodenum
(c)	Islets of Langerhans	(iii)	Small intestine
(d)	Brunner’s Glands	(iv)	Liver

Select the correct option from the following:

	(a)	(b)	(c)	(d)
1.	(iii)	(ii)	(i)	(iv)
2.	(iii)	(i)	(ii)	(iv)
3.	(ii)	(iv)	(i)	(iii)
4.	(iii)	(iv)	(i)	(ii)

77.

The partial pressure of oxygen in the alveoli of the lungs is:
1. equal to that in the blood
2. more than that in the blood
3. less than that in the blood
4. less than that of carbon dioxide

78.

Reduction in pH of the blood will
1. reduce the blood supply to the brain
2. decrease the affinity of hemoglobin with oxygen
3. release bicarbonate ions by the liver
4. reduce the heart rate

79.

Which of the following conditions cause erythroblastosis foetalis?
1. Mother Rh^+ve and fetus Rh^-ve
2. Mother Rh^-ve and fetus Rh^+ve
3. Both mother and fetus Rh^-ve
4. Both mother and fetus Rh^+ve

80.

The principal nitrogenous excretory compound in humans is synthesized
1. in kidneys but eliminated mostly through liver
2. in kidneys as well as eliminated by kidneys
3. in liver and also eliminated by the same through bile
4. in the liver, but eliminated mostly through kidneys

81.

Which of the following structures or regions is incorrectly paired with its function?

1.	Hypothalamus - Production of releasing hormones and regulation of temperature, hunger and thirst.
2.	Limbic system - Consists of fibre tracts that interconnect different regions of brain; controls movement.
3.	Medulla oblongata - Controls respiration and cardiovascular reflexes.
4.	Corpus callosum - Band of fibres connecting left and right cerebral hemispheres.

82.

Low Ca²⁺ in the body fluid may be the cause of

1.	tetany	2.	anaemia
3.	angina pectoris	4.	gout

83.

Match the items given in Column-I with those in Column-II and select the correct option given below:

	Column-I		Column-II
a.	Fibrinogen	i.	Osmotic balance
b.	Globulin	ii.	Blood clotting
c.	Albumin	iii.	Defense mechanism

	a	b	c
1.	iii	ii	i
2.	i	ii	iii
3.	i	iii	ii
4.	ii	iii	i

84.

Fight or flight reactions cause activation of

1.	the parathyroid glands, leading to increased metabolic rate
2.	the kidney, leading to suppression of renin-angiotensin-aldosterone pathway
3.	the adrenal medulla, leading to increased secretion of epinephrine and norepinephrine
4.	the pancreas leading to a reduction in the blood sugar levels

85.

The maximum amount of electrolytes and water (70 - 80%) from the glomerular filtrate is reabsorbed in which part of the nephron?
1. Proximal convoluted tubule
2. Descending limb of loop of Henle
3. Ascending limb of loop of Henle
4. Distal convoluted tubule

Zoology - Section B

86.

Consider the following four statements (A-D) about certain desert animals such as kangaroo rats:

A.	they have a dark colour and a high rate of reproduction and excrete solid urine.
B.	they do not drink water, breathe at a slow rate to conserve water, and have their body covered with thick hairs.
C.	they feed on dry seeds and do not require drinking water.
D.	they excrete very concentrated urine and do not use water to regulate body temperature.

Which two of the above statements for such animals are true?

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

87.

Bundle of His is a network of: -
1. Muscle fibres distributed throughout the heart walls
2. Muscle fibres found only in the ventricle wall
3. Nerve fibres distributed in ventricles
4. Nerve fibres found throughout the heart

88.

Which one of the following is the correct matching of the site of action on the given substrate, the enzyme acting upon it and the end product?
1. Duodenum :Triglycerides→Trypsin→Monoglycerides
2. Small intestine :Starch→α-amylase→Disaccharide (maltose)
3. Small intestine :Proteins→Pepsin→Amino Acids
4. Stomach :Fats→ Lipase→Micelles

89.

The enzyme that is not present in succus entericus is
1. maltase
2. nucleases
3. nucleosidase
4. lipase

90.

The increase in osmolarity from outer to inner medullary interstitium is maintained due to:

(i)	Close proximity between Henle's loop and vasa recta
(ii)	Counter current mechanism
(iii)	Selective secretion of HCO^3– and hydrogen ions in PCT
(iv)	Higher blood pressure in glomerular capillaries

1.	Only (ii)	2.	(iii) and (iv)
3.	(i), (ii) and (iii)	4.	(i) and (ii)

91.

Select the correct statement.
1. Glucagon is associated with hypoglycemia.
2. Insulin acts on pancreatic cells and adipocytes.
3. Insulin is associated with hyperglycemia.
4. Glucocorticoids stimulate gluconeogenesis.

92.

Lungs do not collapse between breaths and some air always remains in the lungs which can never be expelled because

1.	there is a negative pressure in the lungs
2.	there is a negative intrapleural pressure pulling at the lung walls
3.	there is a positive intrapleural pressure
4.	pressure in the lungs is higher than the atmospheric pressure

93.

Removal of proximal convoluted tubule from the nephron will result in
1. More dilute urine
2. More concentrated urine
3. No change in quality and quantity of urine
4. No urine formation

94.

Which of the following is true for the labelled parts in the figure below?

1.	A - Z-line - located at centre of I - band
2.	B - Thin filament - occurs in A-band only
3.	C - Thick filament - confined to I-band
4.	D - H-zone - located at centre of M-line

95.

Arteries are best defined as the vessels which

1.	carry blood away from the heart to different organs
2.	break up into capillaries which reunite to form a vein
3.	carry blood from one visceral organ to another visceral organ
4.	supply oxygenated blood to the different organs

96.

Figure shows schematic plan of blood circulation in humans with labels A to D. Identify the label and give its function/s.

1.	B-Pulmonary artery- takes blood from heart to lungs, PO₂ = 90mm Hg
2.	C-Vena Cava- takes blood from body parts to right auricle, PCO₂ = 45mm Hg
3.	D-Dorsal aorta- takes blood from heart to body parts, PO₂ = 95mm Hg
4.	A- Pulmonary vein - takes impure blood from body parts, PO₂ = 60mm Hg

97.

Which one of the following statements is correct?

1.	Neurons regulate endocrine activity, but not vice versa.
2.	Endocrine glands regulate neural activity, and nervous system regulates endocrine glands.
3.	Neither hormones control neural activity nor do the neurons control endocrine activity.
4.	Endocrine glands regulate neural activity, but not vice versa.

98.

During the transmission of nerve impulse through a nerve fibre, the potential on the inner side of the plasma membrane has which type of electric charge?

1.	First positive, then negative and again back to positive.
2.	First negative, then positive and again back to negative.
3.	First positive, then negative and continue to be negative.
4.	First negative, then positive and continue to be positive.

99.

The type of muscles present in our:

1.	upper arms are smooth muscle fibres fusiform in shape
2.	heart is involuntary and unstriated smooth muscles
3.	intestine are striated and involuntary
4.	thighs are striated and voluntary

100.

Depolarization of axolemma during nerve conduction takes place because of:

1.	Equal amount of Na⁺ & K⁺ moves out across axolemma
2.	Na⁺ ions move inside
3.	More Na⁺ ions are outside
4.	None of the above

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