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WorksheetsPhysics and Chemistry Quiz
Total questions: 127
Worksheet time: 1hrs 29mins
A planet revolving around the sun sweeps area A1 in 2 days, A2 in 4 days and A3 in 8 days. The ratio A1: A2: A3 is
1 : 2 : 4
1 : 4 : 8
2 : 5 : 6
4 : 8 : 1
A block of wood floats in water with (2/3)rd of its volume submerged. If the same block floats in an oil with (1/3)rd of its volume submerged, then density of oil (in kg/m3) will be
2
20/3
200/3
2000
Stress versus strain graph within elastic limit of the two substances, A and B, is given below. The ratio of Young’s modulus of elasticity of substance A to substance B is
√3 : √2
√2 : 1
√6 : 1
√3 : 1
Equation of a standing wave is given by
y = Asin(ωt – kx)
y = Asinωt
y = 2Asinkx cosωt
All of the above
In a hydraulic lift, used at car service station, the radius of the large and small piston are in the ratio of 10 : 1. What weight placed on small piston will be sufficient to lift a car of mass 1000 kg?
10 kg
20 kg
50 kg
100 kg
A : Black colour is a good absorber of heat. R : All black coloured objects are considered as perfect black bodies.
Both Assertion & Reason are true and the reason is the correct explanation of the assertion
Both Assertion & Reason are true but the reason is not the correct explanation of the assertion
Assertion is true statement but Reason is false
Both Assertion and Reason are false statements
For a thermometer, if the ice point on a hypothetical scale is 10° X and the steam point is 60° X. If it measures 20° X then the temperature in °C is
30°C
20°C
40°C
50°C
In a thermodynamic system, internal energy decreases by 300 J when it is doing 350 J of work. What net heat is taken by system in the process?
150 J
650 J
100 J
50 J
A gas mixture consists of a 2 moles of oxygen and 4 moles of argon at temperature T. Neglecting all vibrational modes, the total internal energy of the system is
4RT
15RT
9RT
11RT
For a particle performing SHM, differential equation of motion is given as d2x/dt2 + 4x = 0. The frequency of oscillation is
π Hz
1/π Hz
2π Hz
2 Hz
For a particle of mass(m) under SHM displacement-time graph (sinusoidal) is as shown (ω is angular frequency) Choose the correct expression of force (F)
F = Asinωt
F = –mω²Asinωt
F = Aωcosωt
F = mω²Asinωt
A cylindrical tube, is open at both the ends, it has fundamental frequency 200 Hz in air. Now half of length contains water. The fundamental frequency will now be
600 Hz
500 Hz
200 Hz
100 Hz
By what percentage will the acceleration due to gravity at a height of 1600 km from the surface of the Earth differ from that on the surface of the Earth? (Take radius of Earth to be 6400 km)
20%
15%
24%
36%
The density of a planet is 4 times that of the earth and radius is 1/2 times that of the earth. The acceleration due to gravity on the surface of the planet is
4.9 m s–2
3.92 m s–2
19.6 m s–2
9.8 m s–2
The ratio of the masses and radii of two planets are 2 : 3 and 8 : 27. The ratio of respective escape speeds from their surfaces are
√3:√2
9:4
3:2
3:4
A rope 1.5 cm in diameter breaks, if the tension in it exceeds 700 N. The maximum tension, that a rope of diameter 3 cm and of same material can bear is
1400 N
700 N
2800 N
2100 N
The extension produced in a wire by the application of load is 5 mm. The extension in a wire of the same material and length but half the radius, by the same load is
40 mm
20 mm
50 mm
30 mm
A bar of cross-section area A is subjected to equal and opposite tensile forces F and F at its ends as shown. Consider a plane PQ through the bar making an angle θ with a plane at right angles to the bar length. The tensile stress at this plane PQ in terms of F, A and θ is
Fcosθ/A
Fcos²θ/A
F/A
F/Acosθ
A liquid is filled upto a height of 80 cm in a cylindrical vessel. The speed of liquid coming out of a small hole at the bottom of vessel is (g = 10 m/s²)
2 m/s
4 m/s
6 m/s
8 m/s
The energy radiated per second by a spherical black body will be doubled if its
Radius is doubled and other parameters remains same
Radius is increased by nearly 41% and other parameters remains same
Temperature is increased by 41% and other parameters remains same
Temperature is doubled and other parameters remains same
Surface tension of soap solution is 4 × 10–2 N/m. If a soap bubble of radius 5 cm is blown, then the amount of work done is
8π × 10–4 J
4π × 10–4 J
2π × 10–4 J
8π J
Along a streamline,
The velocity of a fluid particle remains constant
The velocity of all fluid particles at a given instant is constant
The velocity of all fluid particles crossing a given position is constant
The speed of a fluid particle remains constant
In the given cyclic process, work done by gas is
Greater than zero
Less than zero
Zero
Infinite
The rate of energy radiated from a black body at 227°C is 20 W. If temperature of the black body is changed to 727°C then its rate of energy radiated will be
160 W
320 W
160/3 W
320/3 W
The amount of heat required to convert 20 gram of ice at 0°C to water at 10°C is
1600 cal
1000 cal
1400 cal
1800 cal
Potential energy for a particle under SHM at mean position of a particle is 5 J. If the mean kinetic energy is 8 J then its total energy is
5 J
10 J
21 J
50 J
If P, V, T represents pressure, volume and temperature of an ideal gas system, the choose the correct graph for constant pressure.
A Carnot engine rejects 500 cal heat to the sink at 127°C. If temperature of source is 327°C, then amount of work done by the engine will be
500 cal
400 cal
250 cal
600 cal
Given below are two statements: Statement I: At room temperature, all the gases behave as ideal gas. Statement II: Re
Given below are two statements: Statement I: At room temperature, all the gases behave as ideal gas. Statement II: Real gas curve approach the ideal gas behaviour for high pressure and low temperature. In the light of the above statements, choose the most appropriate answer from the options given below.
Both Statement I and Statement II are correct
Both Statement I and Statement II are incorrect
Statement I is correct but Statement II is incorrect
Statement I is incorrect but Statement II is correct
The product of wavelength corresponding to maximum intensity of radiation and absolute temperature of a body, is a constant (i.e., λmT = constant). This fact is
Newton’s law of cooling
Wein’s displacement law
Stefan’s law
Charles’ law
Ratio of mean free path of the molecules of two gases, if the ratio of their number density is 3 : 4 and the ratio of molecular diameters is 2 : 5, will be
25/3
4/3
4/25
3/16
The K.E and P.E of a particle executing SHM with amplitude A will be equal, then at that instant find its displacement.
A/√2
A/2
A/√2
A/√2*3
The ratio of intensities of two coherent waves is 9 : 4. The ratio of maximum to minimum intensity due to superposition of the two waves will be
5 : 1
25 : 1
9 : 4
3 : 2
If a closed organ pipe and an open organ pipe have the same frequency in third overtone, then their lengths are in the ratio
3 : 4
7 : 8
2 : 1
7 : 4
If the tension on a stretched string is quadrupled, then the ratio of the initial and final speed of a transverse wave along the string is
1 : 2
2 : 1
1 : √2
√2 : 1
Two bodies A and B of masses m1 = 1 kg and m2 = 16 kg respectively are placed 1.0 m apart. A third mass m = 3 kg is placed at point C on line joining A and B. If mass m experience no force then what is its distance from m1?
0.5 m
0.4 m
0.3 m
0.2 m
Match List-I with List-II. List-I (Phenomenon) List-II (Underlying principle) a. Falling of a raindrop with constant speed (i) Surface tension b. Dynamic lift (ii) Stoke's law c. Excess pressure inside liquid drop (iii) Bernoulli's principle d. Hydraulic lift (iv) Pascal law Choose the correct answer from the options given below.
a(ii), b(iii), c(i), d(iv)
a(ii), b(i), c(iii), d(iv)
a(ii), b(iii), c(iv), d(i)
a(iii), b(ii), c(iv), d(i)
The Bulk modulus for the perfectly rigid body is
1
Zero
Infinite
1/2
If C_p for a diatomic gas is 7/2 R then C_v for the gas will be
2/3 R
5/2 R
2R
3/2 R
During an adiabatic process, the pressure of a gas is found to be proportional to the fourth power of its absolute temperature. The ratio C_P/C_V for the gas is
2/3
4/3
5/3
4/7
The equation for a travelling wave along negative x direction with amplitude 0.25 m and wavelength λ equals 0.5 m is given by
y = 0.25sin (ωt – 4πx)
y = 0.25sin (2ωt + 2πx)
y = 0.25sin (ωt + 4πx)
y = 0.25sin (4ωt – kx)
A body is executing simple harmonic motion with frequency 'n', the frequency of its potential energy is
4n
n
2n
3n
Two sources of sound placed close to each other, are emitting progressive waves given by y1 = 4sin(400πt) and y2 = 3sin(408πt) An observer located near these two sources of sound will hear
2 beats per second
8 beats per second
4 beats per second
16 beats per second
Number of translational degrees of freedom for an ideal diatomic gas is
2
3
5
4
If the solubility of Ag2CrO4 in water is s mol L–1 at 298 K, then its solubility product (Ksp) will be
2s^2
4s^3
4s^3
8s^3
An example of Heterogeneous equilibrium is,
N2(g)+3H2(g)⇌2NH3(g)
2SO2(g)+O2(g)⇌2SO3(g)
Ni(s)+4CO(g)⇌Ni(CO)4(g)
CO(g)+1/2O2(g)⇌CO2(g)
A 0.2 M solution of monoprotic acid is 40% ionised. The ionization constant of this acid is
5.33 × 10–2
4.7 × 10–4
2 × 10–1
3.23 × 10–2
Value of ΔG° of an equilibrium reaction at 27°C having the value of equilibrium constant 10–2 is
0
1
2.303 × 600 R
600 R
Given the standard electrode potentials: Na+/Na = –2.71 V Pb+2/Pb = –0.13 V K+/K = –2.93 V Mg+2/Mg = –2.37 V Arrange these metals in their decreasing order of reducing power.
Na > K > Mg > Pb
Pb > Mg > Na > K
K > Na > Mg > Pb
Pb > K > Mg > Na
At 25°C, 100 ml 0.1 M HCl and 50 ml 0.2 M NaOH was mixed. pH of the mixture will be
6
7
8
10
Moles of C2O42− ion oxidised by 2 moles of permanganate ion in acidic medium is
3
5
10
7
One litre of a buffer solution contains 0.01 M NH4Cl and 0.1 M NH4OH. (pKb of the base is 5). Then, pH value of the solution is
6
10
2
8
Oxidation state of middle carbon of C3O2 molecule is
0
–2
+2
–4
Number of sp hybridised carbon in the given structure is CH3CH2CH = C = C = C = CH – C ≡ CH
7
5
4
6
Which among the given molecules can exhibit tautomerism?
Arrange the following carbocations in their decreasing order of stability
(IV) > (II) > (I) > (III)
(I) > (III) > (II) > (IV)
(IV) > (III) > (I) > (II)
(I) > (II) > (III) > (IV)
Heterocyclic compound in the following is
Given below are two statements. Statement I: Nitrogen, sulphur, halogens and phosphorus present in an organic compound are detected by “Lassaigne’s test”. Statement II: Kjeldahl method is applicable to both pyridine and pyrrole compounds. In the light of above statements, choose the answer from the options given below.
Both statement I and statement II are correct
Both statement I and statement II are incorrect
Statement I is correct but statement II is incorrect
Statement I is incorrect but statement II is correct
In the following reaction The products (A) and (B) respectively are
Match the reactions given in List-I with the catalyst required, given in List-II List-I List-II (a) CH4 + H2O Δ → CO + 3H2 (i) Mo2O3 (b) 2CH4 + O2 523 K → 100 atm 2CH3OH (ii) Ni (c) CH4 + O2 Δ → HCHO + H2O (iii) (CH3COO)2Mn (d) 2CH3CH3 + 3O2 Δ → 2CH3COOH + 2H2O (iv) Cu Choose the correct answer from the options given below.
(a)(iv), (b)(ii), (c)(i), (d)(iii)
(a)(iii), (b)(iv), (c)(i), (d)(ii)
(a)(ii), (b)(iv), (c)(iii), (d)(i)
(a)(ii), (b)(iv), (c)(i), (d)(iii)
Which of the following has highest boiling point?
major product is
Products A and B respectively are
Trans-2-butene and Cis-2-butene
Cis-2-butene and trans-2-butene
Both Cis-2-butene
Both trans-2-butene
Ph–C≡CH HgSO4/H2SO4 → H2O, 333 K P Major product (P) is
Ph–CH2–CH2OH
Ph–CH2CHO
Ph–CO–CH3
Ph–CH2–O–CH3
The values of Henry's law constant, KH (in k bar) at 298 K for some gases in water are given below. S.No.Gas KH (in k bar) 1.Ar40.3 2.
The gas which is least soluble in water is
Ar
CO2
CH4
HCHO
For an exothermic reaction, A2(g)+B2(g)⇌A2B2(g) Formation of A2B2 will be favoured at
High temperature and high pressure
High temperature and low pressure
Low temperature and low pressure
Low temperature and high pressure
In which of the following species, hyper-conjugation does not take place?
IUPAC name of given compound is
2-Ethyl-5-fluoro-6-nitrobenzene
3-Ethyl-6-fluoro-1-nitrobenzene
4-Ethyl-1-fluoro-2-nitrobenzene
1-Ethyl-4-fluoro-3-nitrobenzene
0.1 mole of sugar (C12H22O11) is dissolved in 500 g of water. If Kb of water is 0.52 K kg mol–1 then the boiling point of the solution will be nearly
98.5°C
101.5°C
100.1°C
102.2°C
If the mass percentage ww of ethanol in water is 18.4% then the molality of ethanol in the aqueous solution will be
7.1 m
4.9 m
2.7 m
4.0 m
If 3 mol of liquid A( PA° = 400 mmHg) and 5 mol of liquid B( PB° = 300 mmHg) are mixed to form a ideal solution then mole fraction of A in vapour is
1/3
2/3
4/9
5/9
0.5 M solution of MgCl2 will have the same osmotic pressure as (consider complete dissociation of electrolytes)
1 M NaCl
1.5 M KCl
1.5 M urea
1 M AlCl3
Molar conductivities (Λm0) at infinite dilution of NaCl, HCl and CH3COONa are x, y and z S cm2 mol–1 respectively. Λm0 for CH3COOH will be
x + y + z
x – y – z
y + z – x
y – z – x
If the resistance of a conductivity cell containing 0.01 mol/L KCl solution at 298 K is 1000 Ω, then the conductivity of the cell is [cell constant = 0.219 cm–1]
2.19 × 10–3 S cm–1
2.19 × 10–4 S cm–1
21.9 S cm–1
2.19 S cm–1
Limiting molar conductivity of which ion in water is highest at 298 K?
Na+
K+
Mg2+
Ca2+
A solution of AgNO3(aq) is electrolysed for 10 min with a current of 3A then mass of Ag deposited at cathode will be (Molar mass of Ag = 108 g mol–1)
4.02 g
1.005 g
2.01 g
8.04 g
If the electrode potential of A2+ + e– → A+ is x1 V and of A2+ + 2 e– → A is x2 V then electrode potential of A+ + e– → A will be
(x1 – x2)V
(x1 + x2)V
(2 x1 – x2)V
(2 x2 – x1)V
For the given cell, Mg(s) | Mg2+(0.2 M) || Al3+(10–3 M)|Al(s) If EMF of the cell is
0.46 V
0.69 V
0.21 V
1.1 V
Anode and Cathode of lead storage battery respectively are made up of
Lead plates, grid of Pb packed with Fe2O3
Lead plates, grid of Pb packed with PbO2
Iron plates, grid of Pb packed with Fe2O3
Iron plates, grid of Pb packed with PbO2
Given below are the two statements. Statement I : Propan-2-ol is an achiral molecule. Statement II : Butan-2-ol is a chiral molecule. In light of the above statements, choose the correct answer
Statement I is correct but statement II is incorrect
Statement I is incorrect but statement II is correct
Both statement I and statement II are correct
Both statement I and statement II are incorrect
The correct order of melting point among the following is
The rate constant for a chemical reaction taking place at 500 K is expressed as k = Ae–1000. The activation energy of the reaction is
100 cal mol–1
1000 k cal mol–1
10^4 k cal mol–1
10^6 k cal mol–1
For a chemical reaction H2O2(aq) + 3I–(aq) + 2H+(aq) → 2H2O + I3−(aq) If rate of disappearance of I–(aq) is x mol l–1 s–1 then rate of appearance of I3−(aq) will be
3x
x/3
x
1/x
The given reaction is known as
Wurtz reaction
Wurtz-Fittig reaction
Fittig reaction
Friedel-Craft reaction
Given below are two statements, one is labelled as Assertion (A) and other is labelled as Reason (R). Assertion (A) : Benzyl chloride and chlorobenzene can be distinguished by using alcoholic AgNO3 solution. Reason (R) : Chlorobenzene gives white ppt of AgCl but benzyl chloride does not. In the light of above statements, choose the correct answer.
Both Assertion & Reason are true and the reason is the correct explanation of the assertion
Both Assertion & Reason are true but the reason is not the correct explanation of the assertion
Assertion is true statement but Reason is false
Both Assertion and Reason are false statements
If 40% of first order reaction was completed in 50 minutes, then 50% of the same reaction would be completed in approximately. [Given : log 3 = 0.47, log 5 = 0.7]
79 minute
65 minute
61 minute
74 minute
Chloroform is slowly oxidised by air in the presence of light to
HCOOH
CH3OH
CO2
COCl2
Pinus
Is a dioecious plant
Has unbranched stem
Has symbiotic association of fungi with its roots
Does not form female strobili
Which of the following features is true regarding the first terrestrial plants possessing the vascular tissues?
Dominant gametophytic phase
Non-motile male gametes
Presence of compact sporophylls in all the members
Occurrence of photosynthetic thalloid gametophyte in the life cycle called prothallus
Living pteridophytes are restricted to narrow geographical regions because
Their main plant body is a sporophyte
They possess well-differentiated vascular tissues
Their gametophytes require cool, damp and shady places to grow and need water for fertilization
They bear strobili or cones
How many of the following is/are filamentous algae? Ulothrix, Laminaria, Chlamydomonas, Ectocarpus, Spirogyra, Volvox, Eudorina
Two
Three
One
Four
Green algae lack
Cell wall
Chlorophyll molecules
Motile spores
Coating of algin in cell wall
Isogamy through non motile gametes takes place in
Eudorina
Spirogyra
Ulothrix
Fucus
Lax is
Compact strobilus or cone in bryophytes
Sporangium having spores
Spirally arranged sporophylls along an axis
Female gametophyte in gymnosperms
Read the following statements and choose the correct option. Statement (A) : The gene controlling starch grain size in pea shows incomplete dominance. Statement (B) : Morgan united the knowledge of chromosomal segregation with mendelian principles and called it chromosomal theory of inheritance.
Both statement (A) and statement (B) are correct
Both statement (A) and statement (B) are incorrect
Statement (A) is correct but statement (B) is incorrect
Statement (A) is incorrect but statement (B) is correct
The first action spectrum of photosynthesis was described by the experiment performed by A while experimenting on B
Joseph Priestley–Mint plant
T.W. Engelmann–Cladophora
Cornelius van Niel–Purple sulphur bacteria
Julius von Sachs–Chlorella
In the above equation, what is the source of released O2?
CO2
H2O
Both CO2 and H2O
Glucose
Choose the correct option for A, B, C and D in the given table.
A – Marine B – Chlorophyll a & c C – Absent D – Starch
A – Mostly marine B – Chlorophyll a & d C – Present D – Starch
A – Fresh water B – Chlorophyll a & d C – Absent D – Laminarin
A – Mostly marine B – Chlorophyll a & c C – Absent D – Starch
In C4 pathway, the primary accepter of CO2 is
A 5C compound
RuBP
First stable product of Hatch and Slack cycle
PEP
Alignment of chloroplasts along the walls of the mesophyll cells
Helps in suppressing the carboxylase activity of RuBisCO in C3 plants
Helps in enhancing the rate of photorespiration in maize
Ensures the receiving of optimum quantity of the incident light
Ensures the maximum efficiency of carbon reaction in granal thylakoids
Consider the following (a) CO2 fixation (b) NADP reductase enzyme (c) RuBisCO activity (d) ATPase complex Which among the above are associated with thylakoid of chloroplast?
(a) & (c)
(b) & (d)
(b) & (c)
(a) & (b)
Match column-I with column-II and select the correct option. Column-I (Pigments) Column-II (Colour observed in chromatogram) a. Chlorophyll a (i)Yellow b.Carotenoids (ii)Yellow-green c.Xanthophylls (iii)Yellow to yellow-orange d. Chlorophyll b (iv)Blue green
a(i); b(ii); c(iii); d(iv)
a(iv); b(iii); c(i); d(ii)
a(ii); b(iii); c(iv); d(i)
a(iii); b(iv); c(i); d(ii)
Find the odd one w.r.t. processes lead to development of a proton gradient
Movement of proton across the membrane to stroma through F0 part of ATPase
Transport of protons from stroma to lumen as electrons move through photosystem
Removal of protons from stroma for reduction of NADP+ to NADPH
Accumulation of H+ within the lumen by splitting of water molecules
Cyclic photophosphorylation differs from non-cyclic photophosphorylation as it involves
Synthesis of ATP
PS I
Photolysis of water
Cyclic flow of electrons
Dark reaction in photosynthesis
Occurs in dark only
Does not require light energy directly
Cannot occur during day time
Does not use reducing power
Select the incorrect statement from the following.
In living organisms, respiratory substrates are often more than one
Pure proteins or fats are never used by organisms as respiratory substrates
In case of anaerobic respiration, respiratory quotient of glucose would be less than one
The value of respiratory quotient of tripalmitin is 0.7
A TCA cycle
Involves two steps at which CO2 is removed
Starts with condensation of acetyl group with pyruvic acid
Involves two successive steps of substrate level phosphorylation
Requires continued replenishment of citric acid for continued reduction of Acetyl CoA
The enzyme complex, pyruvate dehydrogenase catalyzes the conversion of
Acetaldehyde into ethyl alcohol
Pyruvate into lactic acid
Pyruvate into acetyl CoA
Phosphoenolpyruvate into pyruvic Acid
During oxidative decarboxylation, a 3C molecule (Pyruvic acid) is converted into a
5C compound
2C compound
4C compound
6C compound
In oxidative phosphorylation, complex V is
ATP synthase
Succinate dehydrogenase
Cytochrome bc1
Cytochrome c oxidase
How many types of gametes can be produced by a plant with genotype PPQQRrSS?
Four
Six
Eight
Two
Invertase enzyme catalyzes the conversion of
Sucrose into glucose and fructose
1, 3 bisphosphoglyceric acid into 3-phosphoglyceric acid
Phosphoenol pyruvate into pyruvic acid
Glyceraldehyde-3-phosphate into DHAP
Coconut milk can be used to
Promote root growth and root hair formation
Promote senescence
Induce formation of male flower
Counteract apical dominance
Ethephon is
Most widely used compound as a source of ABA
Used in artificial ripening of fruits
Used to promote male flowers in cucumber
Used to inhibit flowering in mango
ABA is also called stress hormone because
It increases the stress conditions for the plants
It regulates the opening and closing of stomata
It increases the tolerance of plants in adverse environmental conditions
It increases the water absorption capacity of the plant
Find the correct application of cytokinin.
Acts as antitranspirant and induces closure of stomata
To promote root development on various types of cuttings
In tea plantation for giving bushy appearance
Promotes parthenocarpy in fruits like banana and grapes
E. Kurosawa found that ‘foolish seedling’ disease in rice plant
Was caused by a fungus Gibberella fujikuroi
Occurred due to high internal concentration of auxins
Occurred due to high concentration of ABA
Is induced by a hormone called cytokinin
Which of the following hormone help to form new leaves, lateral shoot growth and adventitious shoot formation?
Zeatin
2, 4-D
Dormin
IAA
Which growth curve is true for living organisms that grow in natural environment?
Sigmoid
Linear
J shaped
Parabola
Which of the following steps would not be needed for artificial hybridisation involving dioecious plants?
Bagging of female flower
Dusting of pollen on stigma
Removal of anther, i.e., emasculation
Re-bagging of flower after pollen dusting
Select the incorrect statement w.r.t flowers.
Several hormonal and structural changes lead to the differentiation and development of floral primordium.
They are the site for sexual reproduction in angiosperms.
Corolla consists of sepals which are sterile
Gynoecium consists of carpels which is an essential whorl of flower
In an angiospermic plant, how many meiosis are required for the formation of 104 male gametes from microspore mother cell?
100
25
13
26
Identify the following statements as true(T) or false(F) and choose the option accordingly. a. Parthenocarpic fruits do not develop from ovary. b. False fruit can have fleshy thalamus. c. False fruit cannot have seeds.
a-T, b-T, c-F
a-F, b-F, c-T
a-F, b-T, c-F
a-T, b-F, c-T
Epiblast is
The smaller cotyledon in dicot seeds
Remains of second cotyledon in some grasses
The cylindrical portion below the level of cotyledons
An undifferentiated sheath that encloses the root cap
How apomixis can be beneficial to the hybrid seed industry?
Seeds will become too expensive for the farmers
Progeny plants will not be able to maintain hybrid characters
There will be no segregation of characters in the hybrid progeny
Hybrid seed cultivation will decrease productivity
