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Test: Biology - 12


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Test: Biology - 12 - Question 1

The basic unit in new systematics is

Detailed Solution for Test: Biology - 12 - Question 1
♦ A large number, sometimes thousands of specimens are studied to record variations before deciding the limits of species.
♦ The basic unit in new systematics is population.
♦ The new systematics is scientific and very useful academically as well as economically.

Test: Biology - 12 - Question 2

Axile placentation is not found in

Test: Biology - 12 - Question 3

In Funaria

Test: Biology - 12 - Question 4
In Lathyrus aphaca, the tendril represents the modification of
Test: Biology - 12 - Question 5

In Whitlaker’s five kingdom system of classification,multicellular eukaryotes were assigned to

Test: Biology - 12 - Question 6
Which of the following is not related to endodermis?
Test: Biology - 12 - Question 7
The fertile glume, a special bract, found at the base of flower of cereals and grasses is called
Test: Biology - 12 - Question 8
Gram negative bacteria are stained with
Test: Biology - 12 - Question 9

Cauliflory is

Test: Biology - 12 - Question 10
Gametangial copulation is common in
Test: Biology - 12 - Question 11
A fruit that develops from bicarpellary, syncarpous, one chambered ovary and dehisces by one suture only is known as
Test: Biology - 12 - Question 12

The distinguishing feature of family Solanaceae is

Test: Biology - 12 - Question 13
Wood of Pinus is
Test: Biology - 12 - Question 14

A caryopsis is a fruit

Test: Biology - 12 - Question 15

Periderm does not contain

Test: Biology - 12 - Question 16
The character common between cyathium and hypanthodium inflorescence is
Test: Biology - 12 - Question 17
Endosperm of Pinus is
Test: Biology - 12 - Question 18

A fern differs from a moss in having

Test: Biology - 12 - Question 19
Intercalary meristem results in
Test: Biology - 12 - Question 20
Commercially useful cork is obtained from
Test: Biology - 12 - Question 21
Electron carriers involved in photophosphorylation are located in
Test: Biology - 12 - Question 22
Decline in quantum yield was noticed by Emerson at a wavelength of
Test: Biology - 12 - Question 23
NADPH is produced in photosynthesis during
Test: Biology - 12 - Question 24
Action spectrum of photosnthesis was first studied by
Test: Biology - 12 - Question 25

In aerobic respiration, first is liberated during

Test: Biology - 12 - Question 26

Electron acceptors in ETS in mitochondria are arranged according to

Test: Biology - 12 - Question 27
Cytochrome which hands over electrons to oxygen during terminal oxidation is
Test: Biology - 12 - Question 28
Suction pressure of cell is
Test: Biology - 12 - Question 29
What will be zero in a fuly turgid cell?
Test: Biology - 12 - Question 30
Root pressure is maximum when
Test: Biology - 12 - Question 31
The most widely accepted theory of ascent of sap is
Test: Biology - 12 - Question 32
Swelling of wooden doors during rainy season is due to
Test: Biology - 12 - Question 33

Which of the following statements is correct?

Test: Biology - 12 - Question 34
Which of the following is not a trace element?
Test: Biology - 12 - Question 35
The metal ion involved in the stomatal regulation is
Test: Biology - 12 - Question 36
Which one of the following chemicals serves as an antitranspirant in plants?
Test: Biology - 12 - Question 37
Which element facilitates translocation of sugars in plants?
Test: Biology - 12 - Question 38
Which is responsible for apical dominance?
Test: Biology - 12 - Question 39
‘Fruit ripening hormone’ is
Test: Biology - 12 - Question 40
Hormone inovled in phototropism is
Test: Biology - 12 - Question 41
The movement of pollen tube from stigma to micropyle is
Test: Biology - 12 - Question 42
Mycorrhiza is a symbiotic relationship between
Test: Biology - 12 - Question 43
Embryo formation is absent in
Test: Biology - 12 - Question 44

In archaebacteria

Test: Biology - 12 - Question 45
The organisms which have amoeba like vegetative phase & fungi like reproductive phase are called
Test: Biology - 12 - Question 46

Neurilemma is the name for

Test: Biology - 12 - Question 47
Which of the following tissue has minimum intercellular material
Test: Biology - 12 - Question 48
The camel’s hump is composed of a tissue which provides water when oxidized. It is
Test: Biology - 12 - Question 49
If a tendon gets ossified to form bone, such type of bone is called
Test: Biology - 12 - Question 50
Mathc the following column I with II
Column I                   Column II
A. Oxyntic cells          I. Mucus
B. Goblet cells          II. Bile
C. Chief cells            III. HCl
D. Hepatic cells        IV. Proenzymes
Test: Biology - 12 - Question 51
Pancreatic juice rich in water and electrolytes but poor in enzymes is secreted in response to
Test: Biology - 12 - Question 52
Total gasteroctomy may lead to
Test: Biology - 12 - Question 53
If the bile-pancreatic duct is blocked, the following will not be affected
Test: Biology - 12 - Question 54

An adult person conumers boiled potato. Mark the correct statement regarding the digestion of food cmponents

Test: Biology - 12 - Question 55
Humans can synthesis following vitamins
Test: Biology - 12 - Question 56
The chloride content of RBC will be higher thean that of plasma in
Test: Biology - 12 - Question 57
Bysinosis is an occupational lung disease which may occur in
Test: Biology - 12 - Question 58
If the volum of liberated during respiration is more than the volume of used, the respiratory substrate will be 
Test: Biology - 12 - Question 59
Deoxyhaemoglobin binds with more than oxyhaemoglobin does. It is described by
Test: Biology - 12 - Question 60
If the oxyhaemoglobin dissociation curves of maternal and foetal haemoglobin are compared, the foetal curve will be on
Test: Biology - 12 - Question 61

First sound of heart beat is lower frequency and longer duration. If develops during

Test: Biology - 12 - Question 62
Effect of acetylchlorine on heart is
Test: Biology - 12 - Question 63

Systemic heart refers to

Test: Biology - 12 - Question 64

In Heart-block

Test: Biology - 12 - Question 65
Following blood vessels help in regulating the blood pressure and the amount of blood flowing to the tissue
Test: Biology - 12 - Question 66
In ECG the elevation of ST-segment indicates
Test: Biology - 12 - Question 67
The net pressure gradient that causes the fluid to filter out of the glomeruli into the capsules is
Test: Biology - 12 - Question 68
Which of the following pressure-change leads to an increased G.F.R.
Test: Biology - 12 - Question 69

Mark the incorrect statement

Test: Biology - 12 - Question 70

Match the column I with the column II
Column I                                   Column II
A. Earthworm                         I. Malpghian tubules
B. Cockroach                        II. Green glands
C. Amphioxus                        III. Solenocytes
D. Prawn                               IV. Holonephridia
                                            V. Coxal glands

Test: Biology - 12 - Question 71
Atrial natriuretic factor (ANF) is released in response to the increases in blood volume and blood pressure.Which of the following is not the function of ANF ?
Test: Biology - 12 - Question 72
Which muscle protein acts as ATPase ?
Test: Biology - 12 - Question 73
Movement at Atlanto-occipital joint is an example of
Test: Biology - 12 - Question 74
Match the locomotory strcutre of column I with the name of phylum in column II
Column I                   Column II
A. Parapodia              I.Mollusca
B. Muscular foot        II. Echinodermata
C. Pseudopodia         III. Protozoa
D. Tube feet              IV. Annelida
                                V. Arthropoda
Test: Biology - 12 - Question 75
‘Uncinate process’ is associated with
Test: Biology - 12 - Question 76

In the following disorder the synovial membrane starts secreting abnormal granules called Pannus which cause erosion of cartilage

Test: Biology - 12 - Question 77
The joint between teeth and the jaw bone is called
Test: Biology - 12 - Question 78
Purkinje’s cells are most complex neurons of
Test: Biology - 12 - Question 79
In excitable clls, repolarization is closely associated with one of the following events
Test: Biology - 12 - Question 80
All are None law(principle) states that
Test: Biology - 12 - Question 81
When we move from light to to dark, we fail to see for some time but soon the visibility becomes normal.It is
Test: Biology - 12 - Question 82
Bowman’s gland are found in
Test: Biology - 12 - Question 83
A person is wearing spectacles with cocave lenses for correcting vision. While not using the glasses, the image of a distant object in his case will be formed
Test: Biology - 12 - Question 84
Which of the following serves as a second messenger for slowing contraction of the heart muscles in response to acetylcholine
Test: Biology - 12 - Question 85

Mark the incorrect statement

Test: Biology - 12 - Question 86

Mark the correct statement

Detailed Solution for Test: Biology - 12 - Question 86 The nervous system can act 1,000s of times faster. Many hormones have different targets scattered all over the body; neurons have very specific targets with the nervous system, often only one or a few.
Test: Biology - 12 - Question 87
A young boy has inflantile penis, seminal vesicle and prostate gland. The condition can be improved by treating with
Test: Biology - 12 - Question 88
Which hormone of anterior pituatory is inhibited by dopamine
Detailed Solution for Test: Biology - 12 - Question 88 Dopamine regulate the secretion of hormone from anterior pituitary dopamine supports growth hormone and inhibit prolactin it also blocks gonadotropin hormone and TSH.
Test: Biology - 12 - Question 89
Hassel’s corpuscles are the macrophages present in
Test: Biology - 12 - Question 90
‘Osteitis fibrosa cystica’ develops due to
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