Select the incorrect statement w.r.t. cymose inflorescence.

In racemose inflorescence, the shoot axis continues to grow indefinitely.

Peduncle terminates into a flower

The correct Option is "Shoot axis continues to grow indefinitely"

Flowers are borne in a basipetal order

It can be seen in Begonia and Teak

Select the incorrect statement w.r.t. Photosystem II.

Photosystem II is found in grana lamellae only.

It occurs on the inner surface of the thylakoids

The correct Option is "It is found in both grana and stroma lamellae"

It is involved only in non-cyclic flow of electrons

Select the incorrect statement.

Botanical gardens are ‘Ex-situ’ conservation strategies.

In unicellular organisms growth is synonymous with reproduction

A scientific name has two words in binomial nomenclature

Herbarium contains pressed and preserved plant specimens

The correct Option is "Botanical gardens are ‘in situ’ conservation strategies."

Select the incorrect statement about plasma membrane

proteins show lateral movement within the membrane. Lipids show flip flop movement.

Most common types of lipids are phosphoglycerides

The correct Option is "Proteins show flip flop movement within the membrane"

Polar heads are present towards outer side

Select the incorrect statement w.r.t. monocot root.

In monocot roots, cambium is absent. There is no secondary growth.

Pericycle gives rise to lateral roots

The correct Option is "Cambium develops at the time of secondary growth"

Pith is large and well developed

Select the incorrect statement w.r.t. apoplast pathway of absorption of water in plants.

Apoplast pathway consists of non-living parts of plant body.

The correct Option is "It consists of living parts of plant body"

There is a little resistance in the movement of water

It is not affected by metabolic state of root

Select the incorrect statement w.r.t. pollen grains.

Exine is the outer layer of wall of pollen grain which has prominent apertures called germ pores where sporopollen in is absent.

These are generally spherical in structure

Their wall consists of exine and intine layers

The correct Option is "Their inner wall has prominent apertures called germ pores."

Select the incorrect statement w.r.t. micturition.

Motor messages from CNS initiate the contraction of smooth muscles of urinary bladder.

Urine is stored in urinary bladder till a voluntary signal is given by the CNS

Micturition signal is initiated by the stretching of urinary bladder

The correct Option is "The CNS passes on motor messages to initiate the contraction of voluntary muscles of the bladder"

The neural mechanism causing micturition is called micturition reflex

Select the incorrect statement w.r.t plasma membrane

Tails of membrane lipids are hydrophobic.

Phospholipids are main membrane lipids

The correct Option is "Tails of membrane lipids are hydrophilic"

Heads of membrane lipids are found on exterior side

Intrinsic proteins are embedded in the plasma membrane

Select the incorrect statement w.r.t. animal illustrated.

Annelids contain double solid ventral nerve cord.

Bilaterally symmetrical, triploblastic and segmented animal

It possess parapodia which help in swimming

The correct Option is "It contains double, holow, dorsal nerve cord"

It is an aquatic dioecious animal

Select the INCORRECT statement about ‘menopause’

Ovulation stops and estrogen drops

The correct Option is "It is a disease found in older people"

Select the incorrect statement regarding ${P_4}{O_{10}}$ among the following

${P_4}{O_{10}}$ It contains $16\sigma $ bonds

The correct Option is "It contains $10\sigma $ bonds"

Each phosphorus atom is $s{p^3}$ hybridised

Select the incorrect statement for $\left[ {Co{{\left( {en} \right)}_3}} \right]C{l_3}$ among the following

No. of unpaired electron so diamagnetic in nature

The correct Option is "Paramagnetic in nature"

Select the incorrect statement regarding A $C{H_3} - C \equiv CH + {H_2}OA$

$C{H_3} - C \equiv CH + {H_2}O\mathop {C{H_3}COC{H_3}}\limits_{Actone} $

Gives yellow precipitate with ${I_2}/NaOH$

The correct Option is "Reduces Tollen’s reagent"

Select the incorrect statement among the following

$PbS + 4{H_2}{O_2} \to PbS{O_4} + 4{H_2}O$

Ortho and para hydrogen differ in proton spin

Heavy water is used as a moderator in nuclear reactors

Covalent hydrides are formed by p-block elements

The correct Option is "${H_2}{O_2}\,oxidises{\rm{ }}PbS{\rm{ }}into{\rm{ }}S{O_2}$"

Select the incorrect statement about electrolytic refining ?

In electrolytic refining, impurities deposit as anode mud

Impure metal is made to act as anode

Zinc can be refined using this method

The correct Option is "Impurities deposit as cathode mud"

Select the incorrect statement among the following

In ${O_3}$ O—O bond length is identical with that of molecular oxygen. It is found to be intermediate of O—O and O=O bond length. This is due to reasonance In ozone, bond angle of O—O—O is $116.8^\circ $ and bond length(O—O)is $1.278{\rm{\;}}{{\rm{A}}^ \circ }$

${O_3}$ is used as germicide for purification of air.

The correct Option is "In ${O_3}$, O—O bond length is identical with that of molecular oxygen"

${O_3}$ molecule is angular in shape.

Select the incorrect statement among the following?

Geometric growth is quite common in unicellular organisms when grown in nutrient rich medium. Hence very cell divides.

Increase in growth per unit times is growth rate

A sigmoid growth curve is a characteristic of most living organisms in their natural environment

The correct Option is "Rate of growth is constant during geometrical growth"

Exponential phase is also called as log phase

Select the incorrect statement about Lorentz Force.

If charge is not moving then the magnetic force is zero. Since $\vec Fm = q\left( {\vec v \times \mathord{\buildrel{\lower3pt\hbox{$\scriptscriptstyle\leftarrow$}} \over B} } \right)$ As $\vec v = 0,$ for stationary charge $\therefore \,\,\vec Fm = 0$

In presence of electric field $\overrightarrow E (r)$ and magnetic field $\overrightarrow B (r)$ the force on a moving electric charge is $\overrightarrow F = q[\overrightarrow E (r) + v \times \overrightarrow B (r)]\,$

The force, due to magnetic field on a negative charge is opposite to that on a positive charge.

The force due to magnetic field are become zero if velocity and magnetic field are parallel or antiparallel.

The correct Option is "For a static charge the magnetic force is maximum."

Two to three layers of anther wall which are ephemeral called

Middle layers are short lived, hence ephemeral.

The correct Option is "Middle layer"

In which of the following organisms self fertilisation is seen?

Fishes are dioecious so no self - fertilisation. Earthworm, liverfluke, leech all are hermaphrodite but hermaphrodism is not necessary to give rise to self - fertilisation. In given options only liverfluke does self - fertilisation

The correct Option is "Liverfluke"

Which of the following is a wheat variety rich in proteins and developed through biofortification?

Atlas 66 a wheat variety rich in proteins and developed through biofortification

The correct Option is "Atlas 66"

Identify the wrong statements regarding post-fertilization development.

The outer integument of ovule develops into testa. The inner integument of ovule develops into tegmen.

The ovary wall develops into pericarp

The correct Option is "The outer integument of ovule develops into tegmen"

The fusion nucleus (triple nucleus) develops into endosperm

Which of the following statement is correct about the cell wall of prokaryotic cell? I. Cell wall, if present, possesses muramic acid II. Cell wall, if presents, possesses acitic acid III. Cell wall is always absent The correct options is

In prokaryotes, cell wall is present in bacteria and cyanobacteria. A cell wall is absent in mycoplasma or PPLO. Cell wall, if present, possesses muramic acid

Oogamous type of fusion is found in

Volvox and Fucus. Fusion of a large non-motile egg or ovum with a smaller motile sperm (except in Rhodophyceae). The gametes differ morphologically as well as physiologically and are called oogametes. The fusion of gametes is called oogamy, e.g., Chlamydomonas, Fucus, Chara and Volvox

The correct Option is "Volvox and Fucus"

The type of vegetative propagation seen in chrysanthemum is ____?

Chrysanthemum is vegetatively propagated by – Sucker

A place was rocky and barren but now there is a green forest, the sequence of origin is

The rocky and barren place is deficient in water and lacks any organic matter, having only minerals in disintegrated or weathered state, the pioneer to colonies this primitive substration are crustose types of lichen. Crustose lichens→ Foliose lichens → Moss→ Herbs → Shrub → tree.

The correct Option is "Lichen, moss, herbs, shrubs"

Deficiency of which to the following can cause yellowing of intravenous regions of leaves?

For the proper growth of plants some elements are essentially required, these are known as elements. Calcium is used for the synthesis of cell wall. Deficiency of calcium leads to stunted growth and necrosis of root tips and young leaves. Potassium deficiency causes scorched leaf tips, shorter internodes and chlorasis in inter-veinal areas. Deficiency of copper shows necrosis of the tips of young leaves. While, phosphorus deficiency causes premature leaf falling.