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Test: Biology - 8


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Test: Biology - 8 - Question 1

“Cycloporin-A” bioactive agent that is commonly used as immunosuppressive drug is the product by the fungus that is

Test: Biology - 8 - Question 2

BOD is measure of

Test: Biology - 8 - Question 3

“Lever mechanism” type of Pollination commonly observed in family

Detailed Solution for Test: Biology - 8 - Question 3

Labiatae are a family of flowering plants commonly known as the mint or deadnettle family. Many of the plants are aromatic in all parts and include widely used culinary herbs, such as basil, mint, rosemary, sage, savory, marjoram, oregano, hyssop, thyme, lavender, and perilla. Some species are shrubs, trees (such as teak), or, rarely, vines. Many members of the family are widely cultivated, not only for their aromatic qualities, but also their ease of cultivation, since they are readily propagated by stem cuttings.[citation needed] Besides those grown for their edible leaves, some are grown for decorative foliage, such as Coleus. Others are grown for seed, such as Salvia hispanica (chia), or for their edible tubers, such as Plectranthus edulis, Plectranthus esculentus, Plectranthus rotundifolius, and Stachys affinis (Chinese artichoke).
The family has a cosmopolitan distribution.The enlarged Lamiaceae contain about 236 genera[5] and have been stated to contain 6,900 to 7,200 species, but the World Checklist lists 7,534. The largest genera are Salvia (900), Scutellaria (360), Stachys (300), Plectranthus (300), Hyptis (280), Teucrium (250), Vitex (250), Thymus (220), and Nepeta (200).Clerodendrum was once a genus of over 400 species, but by 2010, it had been narrowed to about 150.
The family has traditionally been considered closely related to the Verbenaceae; in the 1990s, phylogenetic studies suggested that many genera classified in the Verbenaceae should be classified in the Lamiaceae or to other families in the order Lamiales

Test: Biology - 8 - Question 4

In Angiosperm adventive embryony develops from

Test: Biology - 8 - Question 5
Most common type of Tetrad in Angiosperms are
Test: Biology - 8 - Question 6

 Intine of pollen grains is composed of

Detailed Solution for Test: Biology - 8 - Question 6 Pollen embryo sacs are also called Nemec Phenamenon, as Nemec discovered them for the first time. According to Nemec, pollen embryo sacs are produced by the repeated divisions of vegetative nucleus while the generative nucleus degenerates.
Test: Biology - 8 - Question 7

Metaxenia Related to

Test: Biology - 8 - Question 8
If leaf cell of pinus consist of 24 chromosome then chromosome Number in Endosperm of Pinus will be
Detailed Solution for Test: Biology - 8 - Question 8 In Pinus generally leaf and roots are diploid ...so 2n=24....so the endosperm that is n will be..n=12...that is half of the diploid cell.
Test: Biology - 8 - Question 9
During which of the following formation free nuclear division occurs
Test: Biology - 8 - Question 10
Polygonum type of embryo Sac
Detailed Solution for Test: Biology - 8 - Question 10 Yes, polygonum type of embryo sac is 8 nucleate. it has 3 nuclei of antipodal cells, 2 nuclei of synergids, 1 nucleus of the egg cell and the rest are the 2 polar nuclei.
Test: Biology - 8 - Question 11
After culturing the anther of a plant, a few diploid plants were got along with haploid plants.What of the following parts might have given rise to diploid plants?
Test: Biology - 8 - Question 12
Nucellar embryo is
Test: Biology - 8 - Question 13
The synthesis of sporopollenin occurs both in the tapetum and in the cytoplasm of the young spores.Sporopollenin is derived from
Test: Biology - 8 - Question 14
Which of the following are generally used in the propagation of cultivated varientes of Musa?
Test: Biology - 8 - Question 15
Which type of tapentum plays a role in the deposition of sporopollenin granules, called Ubish bodies or orbicules?
Test: Biology - 8 - Question 16
Among the following which one is NOT a method of vegetative propagation ?
Detailed Solution for Test: Biology - 8 - Question 16 Sowing is done by the seed which is the reproductive part of plant not the vegetative part.
Test: Biology - 8 - Question 17

During grafting rootstock is generally derived from a plant

Test: Biology - 8 - Question 18
Which one of the following accurately describes apospory
Test: Biology - 8 - Question 19
SCP term Related to
Test: Biology - 8 - Question 20
Small Proteins produced by vertebrate cells naturally and in response to viral infections inhafiting viral multiplication are known as
Test: Biology - 8 - Question 21
Cultivation of Bt cotton has been much in the news. The prefix Bt means
Test: Biology - 8 - Question 22
Oldest viable seed Reported Recently is that of Lupin (Lupinus arcticus), excavated from Arctic tundra. The seed germinate and flowered after an estimated record of 10,000yr of dormancy. Arecent record of 2000 year -old viable seed of date Palm. discovered during the archeological excavation at king Herod’s palace near dead sea. Viability of seed canbe tested by use of chemical that is
Test: Biology - 8 - Question 23
In Agave vegitative reproduction is carried out through
Test: Biology - 8 - Question 24
“LAB” can help in
Test: Biology - 8 - Question 25

Pseudomanas putida known as

Test: Biology - 8 - Question 26

Plague is caused by

Test: Biology - 8 - Question 27
Terramycin is obtained from
Test: Biology - 8 - Question 28
Botulism caused by Clostridium botulinum is due to toxin produced by the bacterium. Only 60 billion of a gram is sufficient to kill a human. Which of the following is not a characteristic feature of this bacteians ?
Test: Biology - 8 - Question 29

Escherichia coli, a moneran, is extensively used in biological reaserch because

Test: Biology - 8 - Question 30

Dissolved oxygen is removed from boiler feed water to prevent

Test: Biology - 8 - Question 31

In India the commonly used method for sewage treatment is

Test: Biology - 8 - Question 32
Phytoremediation is
Test: Biology - 8 - Question 33

Which of the following is included in biopesticides ?

Test: Biology - 8 - Question 34
Which of the following can be controlled by using biopesticides ?
Test: Biology - 8 - Question 35
Biofertilisers include
Test: Biology - 8 - Question 36
Denitrirfication carreid out by
Test: Biology - 8 - Question 37
Fungi are also known to form symbiotic association with plants which one Taxa (genus) of Fungi commonly form mycorrhiza
Test: Biology - 8 - Question 38
Idea of “Predation” utilized in
Test: Biology - 8 - Question 39
The virus which are able to attack on insect and other arthropods as pathogen - etc
Test: Biology - 8 - Question 40
The Technology of Biogas production was developed in India mainly due to efforts of
Test: Biology - 8 - Question 41
MOEF (Delhi) has initiated Ganga Action Plan in
Test: Biology - 8 - Question 42
Blood clots can be remove from resepective blood vessel of patients who has gone myocordial infraction leading to heart attack by use of
Test: Biology - 8 - Question 43
Pollen consumtion has been claimed to increase the performance of athelete and race horse pollen grains are commonly utilized in the form of
Test: Biology - 8 - Question 44
“Sludge” term used in CETP particularly during
Test: Biology - 8 - Question 45
The masses of Bacteria associated with fungal filament to form meshlike structure called as
Test: Biology - 8 - Question 46
Exogenous budding requires
Test: Biology - 8 - Question 47
Plasmodium is an example of
Test: Biology - 8 - Question 48
Hermaphroditim refers to
Test: Biology - 8 - Question 49
Which of the following is a primary sex organ?
Test: Biology - 8 - Question 50
The tubules inside the testis are called
Test: Biology - 8 - Question 51
The prostate gland is comparable to
Detailed Solution for Test: Biology - 8 - Question 51 Prostate gland is present in males.It helps in producing semen.There is noo such type of gland in females.
Test: Biology - 8 - Question 52
The penis contains
Test: Biology - 8 - Question 53
Corpus luteum is
Test: Biology - 8 - Question 54
The uterus in humans is
Test: Biology - 8 - Question 55
The posterior narrow portion between the uterus and vagina is called
Test: Biology - 8 - Question 56

Fertilisation occurs

Test: Biology - 8 - Question 57

Anestrus is

Test: Biology - 8 - Question 58
In which of the following does the periodic production of estrogen not occur throughout the year?
Test: Biology - 8 - Question 59
Vitellogenesis occurs during
Detailed Solution for Test: Biology - 8 - Question 59 Vitellogenesis occurs when the oocyte reaches the diplotene stage of meiotic prophase. ..the vitellogenesis, the process by which yolk accumulates in the cytoplasm of an ovarian oocyte.
Test: Biology - 8 - Question 60

Which statement is incorrect ?

Test: Biology - 8 - Question 61
Which one is not related to reproductive system?
Test: Biology - 8 - Question 62
Leydig cells are found in the
Test: Biology - 8 - Question 63
Which one is not related to the reproductive phase of life
Test: Biology - 8 - Question 64
When a dominant allele at one locus and the recessive allele at the other locus produce the same phenotypic effect,the ratio of dominant and recessive epistasis would be
Test: Biology - 8 - Question 65
Yeast (Saccharomyces cerevisiae) is used in the industrial production of
Test: Biology - 8 - Question 66
The recessive genes produce the following type of comb in fowls
Test: Biology - 8 - Question 67
Pure vaccines are
Test: Biology - 8 - Question 68
The enzyme used to cut the DNA molecule is
Test: Biology - 8 - Question 69
Universal donor belongs to the blood group
Test: Biology - 8 - Question 70
When a homozygous red grain wheat is crossed with a white and the offsprings are selfed, howmany offsprings resemble the parents genotypically
Test: Biology - 8 - Question 71
The grain colour of wheat was quantitatively analysed by
Test: Biology - 8 - Question 72
Mental retardation related to sex chromosome abnormality is due to
Test: Biology - 8 - Question 73
If two pairs of chromosomes can recombine in four possible ways, then five pairs of chromosomes would combine in
Detailed Solution for Test: Biology - 8 - Question 73 For 2 pairs it has 4 ways... i.e for 1 pair it has 2 ways . it means that for every pair ,the no. of ways is doubling.... then for 5 pairs...I.e.n=5.. 2^n=2^5=32 ways.......
Test: Biology - 8 - Question 74
A person with Klinefelter’s syndrome has
Test: Biology - 8 - Question 75
During meiosis I homologous chromosomes of one pair switch their positions without affecting the position of another pair. This is known as
Test: Biology - 8 - Question 76
The transforming substance of pneumococcus in Griffith’s experiment was
Test: Biology - 8 - Question 77
Genetic information in DNA is encoded in
Test: Biology - 8 - Question 78
In the experiment of Meselson and Stahl, the heavy DNA was allowed to undergo two rounds of replication in medium. The isolated DNA would show
Test: Biology - 8 - Question 79

Uncoiling of the double helix is done by

Detailed Solution for Test: Biology - 8 - Question 79

Topoisomerases catalyze and guide the unknotting or unlinking of DNA by creating transient breaks in the DNA using a conserved tyrosine as the catalytic residue. The insertion of (viral) DNA into chromosomes and other forms of recombination can also require the action of topoisomerases.

Test: Biology - 8 - Question 80
If the template strand of DNA has the sequence ATGCCATGCC, what would be the sequence of RNA?
Detailed Solution for Test: Biology - 8 - Question 80 In RNA, Uracil is present and thymine is absent so UACGGUACGG...
Test: Biology - 8 - Question 81
A large cluster of ribosomes is called
Test: Biology - 8 - Question 82
Human skin colour is controlled by
Test: Biology - 8 - Question 83
Quantitative inheritance relates to
Test: Biology - 8 - Question 84
Genes located on the same locus but having different expressions are
Test: Biology - 8 - Question 85
In cheese manufacture, the microorganisms are important for
Test: Biology - 8 - Question 86
Which of the following is related with genetic engineering
Test: Biology - 8 - Question 87
6—10% solution of dextrin is
Test: Biology - 8 - Question 88
Medium used in culturing hybridoma cells is
Test: Biology - 8 - Question 89
The organism used for alcohol fermentation is
Test: Biology - 8 - Question 90
Cheese types are classified on the basis of
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