Choose the incorrect statement

True fertilisation together with triple fusion is known as double fertilisation, a unique phenomenon only occurs in angiosperms (absent in gymnosperms with few exception) and first time demonstrated by Nawaschin in Fritillaria and Lilium

The correct Option is "Double fertilisation is unique to gymnosperms and monocotyledons"

Sequoia, a gymnosperm, is one of the tallest trees

Phaeophyceae members possess chlorophyll-a, c, carotenoids and xanthophylls

Moss is a gametophyte, which consists of two stages namely, protonema stage and leafy stage

Choose the incorrect statement about skeletal muscles I. Tissues are closely attached to bones II. A sheath of tough connective tissue encloses several bundles of muscles fibres III. These are involuntary in their action IV. These are present in the blood vessels

Skeletal muscles are voluntary in their action, i.e., we can move them according to our will walls of the blood vessels contains epithelial tissue not skeletal muscles

The correct Option is "III and IV"

Choose the incorrect statement regarding human digestive system with reference to a normal person

There are three pair of salivary glands in human being namely, paratoid glands, sublingual glands and submaxillary glands. All of the three pairs of glands secretes saliva into buccal cavity through their ducts. About 1000-1500 mL of saliva is secreted per day by an adult person

Human saliva is slightly acidic

The correct Option is "In human being, four pair of salivary gland secretes saliva"

The quantity of saliva in adult man may be-1 to 1.5 L day

Enzyme amylase present in saliva is responsible for the break down of starch into simple sugar

Choose the incorrect statement.

Restriction endonuclease breaks the sugar phosphate bond between sugar and phosphate.

In gel electrophoresis, the undigested DNA fragment is likely to move least distance

Any piece of DNA when linked to ori site sequence can be made to replicate within host cells

The correct Option is "EcoRI breaks the bond between sugar and nitrogenous base in a DNA"

PCR is included in molecular diagnosis

Choose the incorrect statement w.r.t. structure of DNA proposed by Watson and Crick.

Adenine is bonded to thymine by two hydrogen bonds and guanine is bonded to cytosine by three hydrogen bonds.

Watson-Crick structure is also known as B form of DNA

The two anti-parallel polynucleotide chains in the structure given by Watson and Crick are not identical in either base sequence or composition, rather they are complementary to each other

Each nucleotide base of one strand is paired with the base of another strand in which adenine pairs with thymine and guanine pairs with cytosine

The correct Option is "Adenine pairs with thymine by three hydrogen bonds and guanine pairs with cytosine by two hydrogen bonds"

Choose the incorrect statement

Association areas are responsible for complex functions like intersensory associations, memory and communication.

Dorsal portion of midbrain consists of corpora quadrigemina

Midbrain is located between hypothalamus of the forebrain and pons of hindbrain

The cerebral hemispheres are connected by a tract of nerve fibres called corpus callosum

The correct Option is "Hypothalamus is responsible for complex functions like intersensory associations, memory and communication"

Choose the incorrect statement.

Patients suffering from glomerulonephritis will show high GFR as in this, inflammation of glomeruli of kidney occurs, which leads to increase in porosity of glomerulus. This results in the release of plasma proteins in the filtrate. Plasma proteins being hydrophilic in nature will also pull water along, thereby increasing GFR.

Patients with a condition such as uremia are recommended hemodialysis for the urea to be removed from blood

The correct Option is "Patients suffering from glomerulonephritis will show low GFR"

Kidney transplantation is the ultimate method in the correction of acute renal failures

Renal calculi are the stones of crystallized salts (oxalates, etc.) which are formed within the kidney

Choose the incorrect statement about the strong nuclear force.

Strong nuclear force does not follow the inverse square law.

Within its range it is stronger than electrical interactions

The correct Option is "The force of interaction F is proportional to $\frac{1}{{{r^2}}}$"

Choose the incorrect statement

Medullary ray or pith rays They are the radial strips of parenchyma cells present between the adjacent vascular bundles. The medullary rays connects the pith with pericycle and cortex. They ray cells make intimate connection with the conducting cells of both xylem and phloem through pits The medullary rays help in the radial conduction of food and water. They also transport gases from pith to cortex and vice-versa

Medullary rays connects the pith with pericycle and cortex

Medullary rays make intimate contact with the conducting cells of both phloem and xylem

Medullary rays help in radial conduction

The correct Option is "None of the above"

Some statements are given regarding the active transport in plants. Choose the incorrect statement

Transport of minerals through xylem from the soil to plant takes place by active transport. This active transport need energy to move molecules against the concentration gradient. This is facilitated with membrane proteins due to less concentration of minerals ions in the soil. minerals are transported into root cells by active transport

Active transport need energy to pump molecules against the concentration gradient

It is carried out with the help of membran protein

The correct Option is "Due to more concentration of charged particles in soil then the concentration in roots, active absorption of mineral takes place"

Choose the incorrect statement

All the central forces are conservative

No work is done if the displacement is perpendicular to the direction of the applied force

If the angle between the force and displacement vectors is obtuse, then the work done is negative

Frictional force in non-conservative

The correct Option is "All the central forces are non-conservative"

Choose the incorrect statement from the following S1 : The efficiency of a heat engine can be 1, but the coefficient of performance of a refrigerator can never be infinity S2 : The first law of thermodynamics is basically the principle of conservation of energy S3 : The second law of thermodynamics does not allow several phenomena consistent with the first law S4 : A process, whose sole result is the transfer of heat from a colder object to a hotter object is impossible

Efficiency of a heat engine, $\eta = 1 - \frac{{{T_2}}}{{{T_1}}}$ For $\eta = 1\left( {i.e.,100\% } \right)$either${T_1} = \infty $ or ${T_2} = 0K$ As source at infinite temperature or sink at 0 K are not attainable, therefore heat engine cannot have efficiency 1

Choose the incorrect statement.

Isopropyl amine is a primary amine because one hydrogen atom of ammonia is replaced by isopropyl group.

Primary amines show intermolecular hydrogen bonds.

Tert-butylamine is primary amine.

Tertiary amines do not show intermolecular hydrogen bonds.

The correct Option is "Isopropylamine is a secondary amine."

Choose the incorrect statement

Concentration does not affect the basis strength of amines

In the case primary, secondary and tertiary amines, the basic strength depends on the extent on the extent of hydrogen bonding in the protonated amines

The presence of groups like $-{\rm{OC}}{{\rm{H}}_3}$ and $-{\rm{C}}{{\rm{H}}_3}$ increases the basic strength of amines

The presence of groups like $-{\rm{N}}{{\rm{O}}_2}, - {\rm{CN}}$ and halogens reduces the basic strength of amines

The correct Option is "The basic strength of amines depends on their concentration"

African sleeping sickness is caused by

The genus Trypanosoma is parasitic in the blood of most of the vertebrates. Trypanosoma gambiense causes African sleeping sickness.

The correct Option is "Trypanosoma"

Double fertilization occurs among

Double fertilization is the fusion of one male gamete with female gamete (syngamy) and other male gamete with diploid secondary nucleus (triple fusion), $i.e.,$ double fertilization=syngamy + triple fusion. Double fertilization is characteristic feature of angiosperms. It does not take place in algae, bryophytes, pteridophytes and most gymnosperms.

The correct Option is "Angiosperms"

Flow of electrons in non-cyclic photo phosphorylation is

Flow of electrons in the non-cyclic photophosphorylation is always unidirectionally, from PS-II to the PS-I

Unidirectional (from PS-I to PS-II)

The correct Option is "Unidirectional (from PS-II to PS-I)"

Which of the following represents the floral characters of Liliaceae?

The flower in family-Liliaceae I complete, actinomorphic, trimerous, hypogynous and the gynoecium is tricarpellary, syncarpous having superior ovary with axile placentation.

Six tepals, zygomorphic, six stamens, bilocular ovary, axile placentation

Tetramerous, actinomorphic, polyphyllous, unilocular ovary, axile placentation

The correct Option is "Trimerous, actinomorphic, polyandrous, superior ovary, axile placentation"

Bisexual, zygomorphic, gomophyllous, inferior ovary, axile placentation

Which is most crucial for seed storage?

In dehydration there is less amount of water. In less amount of water the seed’s enzyme can’t works so there is no germination. Dormancy is the time period in which seed can’t grow due to undevelopment of embryo or lacking of other necessary condition for growing

The correct Option is "Dehydration and dormancy"

Increased growth per unit time is termed as

The increased growth per unit time is termed as growth rate. Thus, rate of growth can be expressed mathematically. An organism, or a part of an organism can produce more cells in a variety of ways. The growth rate shows an increase that may be (i) Arithmetic and (ii) Geometrical

The correct Option is "Growth rate"

Chromosomal abbreviation commonly found in the

In cancer cells there is uncontrolled cell division. In them chromosomal abbreviation is commonly found

The correct Option is "Cancer cells"

Consider the following statements about colchicine I. It is an alkaloid widely used in plant breeding for doubling the chromosome number II. Colchicine induced polyploidy has been used in raising several varieties of horticulture and agricultural plants Which of the statements given above is/are correct?

Colchicine is an alkaloid widely used in plant breeding for doubling the chromosome number. Colchicine is extracted from the corms of Autumncrocus(Colchicum autumnale). The alkaloid does not allow the formation of spindle. Colchicine induced polyploidy has been used in raising several varieties of horticultural and agricultural plants,e.g.,potato

The correct Option is "Both I and II"

The potential energy of water is referred as

The water potential is the chemical potential of water in a system or part of a system expressed in units of pressure and chemical potential of pure water at same atmospheric pressure and temperature.