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Which option is correct for Urochordates
How many statement/s is/are correct for given diagram
(i) Organ of corti located on the C.
(ii) Reissner’s mambrane, fenestra ovalis and perilymph associated with A.
(iii)B is thin elastic membrane, above the rows of the hair cells.
(iv) Cochlea located in space D
Which is/are commonly called catecholamines
Mitochondria present in which part of sperm
Out breeding is
Brewer’s yeast used for
Downstreaming processing associated with
Chronic disorder in which alveolar walls are damaged due to which respiratory surface is decreased. One of the major causes of this is cigarette smoking
Grafted kidney may be rejected in a patient due to
HIV that causes AIDS first starts destroying
Which of the following is a degenerative joint disease that affects articular cartilages at the synovial joints normally in old age
Cocaine interferes with the transport of which of the following neurotransmitter
Following is the diagrammatic presentation of a standard ECG. Each wave in the ECG is identified with a letter from P to T that corresponds to a specific electrical activity of the heart. Which of the following is incorrect match
How many statements are correct regarding IUDs
(A)Increase phagocytosis of sperms.
(B) Release Cu ions that suppress sperm motility and fertilizing capacity of sperms.
(C) Make the uterus unsuitable for implantation.
(D)Make the cervix hostile to sperms.
(E) Prevent ovulation.
|(A) Australopithecus||(i) First human like ancestor|
|(B)Homo habilis||(ii) Used hides to protect the body|
|(C)Homo erectus||(iii) Arose in Africa|
|(D)Neanderthal man||(iv) Probably ate meat|
|(E) Homo sapiens||(v) Hunted with stone weapons and ate fruits|
A common biocontrol agent for the control of plant disease is
Outermost covering of cell envelope which provides protection and help in cell adhesion, is
|a. Mesosome||(i) Lederberg|
|b. Plasmid||(ii) Helps in nitrogen fixation|
|c. Chromatophores||(iii) Photosynthetic structure in some prokaryotes|
|d. Heterocyst||(iv) Cell wall formation|
Seeds are endospermic in
Choose the correct match
Read the following statements carefully
(a) Present below epidermis in docot stem.
(b) Cells are much thickened at the corners due to deposition of cellulose, hemicellulose and pectin.
(c) Provide mechanical support to the growing parts.
Above all are the features of
|Column I||Column II|
|a. Thylakoids||i. The inner compartment of mitochondria|
|b. Cristae||ii. Infoldings in mitochondria|
|c. Cisternae||iii. Disc-shaped sacs in golgi apparatus|
|d. Matrix||iv. Flat membranous sacs in stroma|
Which of the following are considered as a part of the endomembrane system
Select the incorrect statment
Mark the mis-matched pair
Ploidy of the cells of the nucellus is
“Sonalika” and “Kalyan Sona” are the varieties of
First antibiotic to be discovered was
|Column I||Column II|
|A. AUG||1. Phenylalanine|
|B. UAA||2. Methionine|
|C. UUU||3. Tryptophan|
|D. UGG||4. Termination|
World environment day is celeberated on
Which of the following pair is incorrect
Maximum metabolic diversity is found in kingdom
Archaebacteria differ from eubacteria on the basis of
Mesosomes are analogous to
Choose the incorrect pair
Choose incorrect match regarding A, B, C, D
Primary productivity varies in different types of ecosystems because it depends on
A. The plant species inhabiting a particular area
B. On a variety of environmental factors
C. Availability of nutrients
D. Photosynthetic capacity of plants
The ‘bakanae’ or ‘foolish seedling’ disease was due to
Which of the following gene expression regulation mechanism found in prokaryotes but not in eukaryotes
In _____ disorder, phenylalnine is accumulated and converted into phenylpyruvic acid and other derivative. Accumulation of these in brain results in mental retardation. These are also excreted through urine because of its poor absorption by kidney
Arrange the following events of meiosis in the correct sequences
(A) Terminilisation of chiasmata
(B) Crossing over
(D) Disjunction of chromosome
(E) Dissociation of synaptonemal complex
The correct sequence is
Conducting respiratory organs in mammals in correct sequence are
Semiconservative replication of DNA experimently proved in plants by
NCERT Class 12th Page No.106 [Vicia faba (faba beans)]
Auto immune disorder affecting neuromuscular junction leading to fatigue, weakening and paralysis of skeletal muscle
Anatomy refers to the study of
Cork cambium is also known as
How many ATPs are formed by one molecule of acetyl CoA
Which is the smallest unit of ecological hierarchy
Which is the correct match for chlorophyceae members
The Erythroblastosis foetalis can be avoided by
In human cells, chromosomes are
Natural ageing of lake due to mineral enrichment known as
Which of the following is not a method for exsitu conservation
Construction of first recombinant DNA was done by using plasmid of
A diagrammatic sketch of a certain type of connective tissue is given below. Identify ‘A’ and ‘B’ and choose the correct answer
Which one of the following fruits is parthenocarpic fruit
Diabetes mellitus can be caused due to which condition
(A) Hypersecretion of insulin
(B) Hypersecretion of glucagon
(C) Hyposecretion of insulin
(D) Insulin resistance
In meiosis, recombination nodules appear at
Which of the following is a wrong statement regarding the universal rules of nomenclature
Which structure is absolutely necessary for the many biological activity
Which of the following medium is not used in the growth of hydrophonic plants
Match column-I with column-II their enzymes and choose the correct option
|(a) Starch||(i) Nucleases|
|(b) Proteins||(ii) Lipases|
|(c) Fats||(iii) Amylases|
|(d) Nucleic acids||(iv) Trypsin|
Which of the following statement is incorrect regarding parturition
Medicinal plants like belladonna, Ashwagandha belongs to family
Above structure represents
Most abundant organic compound in living organisms is
Fibrous mesocarp is found in
Recombinant DNA technology involves several steps in specific sequence. What is the correct sequence for r-DNA technology
a → Down stream processing.
b → Cutting of DNA at specific location.
c → Obtaining the foreign gene product.
d → Isolation of the genetic material.
e → Insertion of r-DNA into the host cell.
Which of the following is not the function of cell wall
(i) Provides shape to the cell.
(ii) Protects the cell from mechanical damage and infection.
(iii) Helps in cell to cell connection.
(iv) Provides barrier to undesirable macromolecules.
(v) Helps in cell recognition.
Polar nuclei are situated in the central cell
In lichen, phycobiont mainly belongs to
The main criteria for Five Kingdom classification are
(A) Cell structure
(B) Thallus organization
(C) Mode of nutrition
(E) Phylogenetic relationships
Which of the following are not disease resistant varieties
NCERT Class 12th Table 9.1
Which of the following events can change frequency of genes and alleles in future generation
Out of the following options which is high in red muscle fibres, except
Defining properties of living being are
In ECG what does T-wave represent
Life span of Butter-fly is
Life span of Parrot is
______ which causes respiratory infections.
NCERT Class 12th Page No.180 Figure 10.2 (b)
The fusion of male and female gametes in course of fertilization is called
The end of juvenile phase marks the beginning of
The largest part of the fallopian tube is
Fructose is present in the secretion of
‘Nirodh’ is a popular brand of
Oral contraceptive pills contain
Typhoid fever can be confirmed by
Which of the following toxic substance is responsible for the chill and high fever recurring every three to four days in malaria
The formula for exponential population growth is
While representing a floral formula, G stands for