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601.

__ can be seen only in the radical and plumule

Answer»

__ can be seen only in the radical and plumule

602.

The skin is an accessory organ of respiration in __.

Answer»

The skin is an accessory organ of respiration in __.

603.

The product of aerobic glycolysis in skeletal muscle and anaerobic fermentation in yeast are respectively ___ and ___.

Answer»

The product of aerobic glycolysis in skeletal muscle and anaerobic fermentation in yeast are respectively ___ and ___.

604.

foetal blood circulation in human baby heart

Answer» foetal blood circulation in human baby heart
605.

Assertion : HgCl_{2 }is less soluble in KCl as compared to solubility of HgI_2 in KI Reason\:: HgI_{2 }forms \lbrack Hg(I_3)_{2 }\rbrack complex in KI

Answer» Assertion : HgCl_{2 }is less soluble in KCl as compared to solubility of HgI_2 in KI Reason\:: HgI_{2 }forms \lbrack Hg(I_3)_{2 }\rbrack complex in KI
606.

Nerve which carries nerve impulse from tissue to central nervous system is called

Answer»

Nerve which carries nerve impulse from tissue to central nervous system is called



607.

Question 28 A cell has 32 chromosomes. It undergoes mitotic division. What will be the chromosome number (n) during metaphase? What would be the DNA content (C) during anaphase?

Answer»

Question 28

A cell has 32 chromosomes. It undergoes mitotic division. What will be the chromosome number (n) during metaphase? What would be the DNA content (C) during anaphase?

608.

Explanation regarding where the phosphate moiety and sugar meioty is present ?whether in 5'end or 3'end.

Answer» Explanation regarding where the phosphate moiety and sugar meioty is present ?whether in 5'end or 3'end.
609.

Why in SN1 reaction 3^° carbocataion is most stable ?

Answer» Why in SN1 reaction 3^° carbocataion is most stable ?
610.

Rubisco:

Answer»

Rubisco:



611.

Two radioactive nuclei P and Q in a given sampleinto a stable nucleus R. At time t = 0 number of P species are 4No and that of Q are No:Half-life of P (for conversion to R) is 1 minute whereas that of Q is 2 minutes. Initially there areno nuclei of R present in the sample. When numberof nuclei of P and Qare equal the number of nucleiof R present in the sample would be2.AIPMT (Mains)-2011\rbrack (1) 5No/2 (2) 2No/2.(3) 3N (4)9N20

Answer» Two radioactive nuclei P and Q in a given sampleinto a stable nucleus R. At time t = 0 number of P species are 4No and that of Q are No:Half-life of P (for conversion to R) is 1 minute whereas that of Q is 2 minutes. Initially there areno nuclei of R present in the sample. When numberof nuclei of P and Qare equal the number of nucleiof R present in the sample would be2.AIPMT (Mains)-2011\rbrack (1) 5No/2 (2) 2No/2.(3) 3N (4)9N20
612.

vapour pressure of solvent decreases by 1%on adding a non volatile solute Na2SO4. If it dissociate up to 25% then determine mole fraction of solute ,if solvent is 5 mole.

Answer»

vapour pressure of solvent decreases by 1%on adding a non volatile solute Na2SO4. If it dissociate up to 25% then determine mole fraction of solute ,if solvent is 5 mole.

613.

Regarding the assertion and reason, select the right option.Assertion (A): Endosperm development precedes embryo development.Reason(R): Endosperm provides assured nutrition to the developing embryo.

Answer»

Regarding the assertion and reason, select the right option.


Assertion (A): Endosperm development precedes embryo development.


Reason(R): Endosperm provides assured nutrition to the developing embryo.



614.

Hardy-Weinberg equilibrium is known to be affected by gene flow, genetic drift, mutation, genetic recombination and

Answer» Hardy-Weinberg equilibrium is known to be affected by gene flow, genetic drift, mutation, genetic recombination and
615.

Which of the following represents the category Class?

Answer»

Which of the following represents the category Class?


616.

Identify the correct sequence of events in sexual reproduction.1. Syngamy 2. Zygote formation 3. Gametogenesis4. Embryogenesis 5. Gamete transfer

Answer»

Identify the correct sequence of events in sexual reproduction.


1. Syngamy


2. Zygote formation


3. Gametogenesis


4. Embryogenesis


5. Gamete transfer



617.

46. Ozonolysis of alkyne

Answer» 46. Ozonolysis of alkyne
618.

Equal volumes of 1 M each of KMnO4 and K2Cr2O7 are used to oxidise Fe(II) solution in acidic medium. The amount of Fe oxidised will be0

Answer» Equal volumes of 1 M each of KMnO4 and K2Cr2O7 are used to oxidise Fe(II) solution in acidic medium. The amount of Fe oxidised will be0
619.

Can you think of a few eurythermal and stenothermal animals and plants?

Answer» Can you think of a few eurythermal and stenothermal animals and plants?
620.

What are the different types of heterotrophic nutrition? Give one examples under each mode.

Answer»

What are the different types of heterotrophic nutrition? Give one examples under each mode.
621.

Which among the following statement is wrong?

Answer»

Which among the following statement is wrong?



622.

Do the following have endoskeleton or exoskeleton−human, crab, cockroach, fish, snail?

Answer» Do the following have endoskeleton or exoskeleton−human, crab, cockroach, fish, snail?
623.

Why foetal haemoglobin has more affinity for oxygen ?

Answer» Why foetal haemoglobin has more affinity for oxygen ?
624.

What is Hypothalamus? Explain its major functions?

Answer» What is Hypothalamus? Explain its major functions?
625.

Gibberellic acid was originally discovered in _______.

Answer» Gibberellic acid was originally discovered in _______.
626.

Figure A shows the diagrammatic sectional view of ovary and figure B shows the schematic representation of oogenesis in human female.Identify the correct stage of oocyte or its meiotic product present in the structures X, Y and Z respectively in the diagrammatic sectional view of ovary (Figure A).Choose the correct option from the table below. ​​​​​​​[0.7 mark]

Answer»

Figure A shows the diagrammatic sectional view of ovary and figure B shows the schematic representation of oogenesis in human female.





Identify the correct stage of oocyte or its meiotic product present in the structures X, Y and Z respectively in the diagrammatic sectional view of ovary (Figure A).

Choose the correct option from the table below.

​​​​​​​[0.7 mark]

627.

In an experiment studying photosynthesis performed during the day, you provide a plant with radioactivecarbon (14C) dioxide as a metabolic tracer. The 14C is incorporated first into oxaloacetate. The plant is best characterized as a

Answer»

In an experiment studying photosynthesis performed during the day, you provide a plant with radioactivecarbon (14C) dioxide as a metabolic tracer. The 14C is incorporated first into oxaloacetate. The plant is best characterized as a


628.

Reorganize the following food chain. Describe the ecosystem to which it belongs. Grasshopper – Snake – Paddy field – Eagle – Frog.

Answer» Reorganize the following food chain. Describe the ecosystem to which it belongs. Grasshopper – Snake – Paddy field – Eagle – Frog.
629.

What is the function of the tonsils and spleen?

Answer»

What is the function of the tonsils and spleen?

630.

Assertion Mitochondria and chloroplast are semi- autonomous organelles.Reason They have their own genetic material which codes for their proteins.

Answer»

Assertion Mitochondria and chloroplast are semi- autonomous organelles.

Reason They have their own genetic material which codes for their proteins.



631.

Draw the next figure of the given pattern:

Answer» Draw the next figure of the given pattern:


632.

Question 21 At what stage of cell cycle does DNA synthesis take place?

Answer»

Question 21

At what stage of cell cycle does DNA synthesis take place?

633.

Write answers to the following.(a) What are the parts of a plant ?(b) What are the functions of the root ?(c) Why is it necessary to classify living things ?(d) What are the criteria used to classify living things ?(e) Tell some characteristics of creepers.(f) Explain the characteristics of herbs with two examples.(g) On the basis of which criteria will you classify plants and animals ?(h) What protects the bodies of animals?

Answer» Write answers to the following.

(a) What are the parts of a plant ?

(b) What are the functions of the root ?

(c) Why is it necessary to classify living things ?

(d) What are the criteria used to classify living things ?

(e) Tell some characteristics of creepers.

(f) Explain the characteristics of herbs with two examples.

(g) On the basis of which criteria will you classify plants and animals ?

(h) What protects the bodies of animals?
634.

What is common between hepatitis infections and HIV infections?

Answer»

What is common between hepatitis infections and HIV infections?


635.

Knee joint and elbow joints are examples of (a) saddle joint (b) ball and socket joint (c) pivot joint (d) hinge joint

Answer»

Knee joint and elbow joints are examples of

(a) saddle joint

(b) ball and socket joint

(c) pivot joint

(d) hinge joint

636.

16. Compare melting point of alkanes c20,c22 and c24

Answer» 16. Compare melting point of alkanes c20,c22 and c24
637.

chemoosmotic theory ofatp formation

Answer» chemoosmotic theory ofatp formation
638.

In both strands, DNA is synthesized in 5' to 3' direction but lagging or Okazaki fragments explain its synthesis in 3' to 5' direction. Wha is the meaning of this line?

Answer» In both strands, DNA is synthesized in 5' to 3' direction but lagging or Okazaki fragments explain its synthesis in 3' to 5' direction.
Wha is the meaning of this line?
639.

Succus entericus lacks

Answer»

Succus entericus lacks



640.

Distinguish between 'Green Revolution' and 'Golden Revolution'.

Answer»

Distinguish between 'Green Revolution' and 'Golden Revolution'.

641.

we use alkaline posphatase to remove phospahte group to prevent unwanted internal binding , so why don't we use any other enzyme which can remove OH group from 3'end

Answer» we use alkaline posphatase to remove phospahte group to prevent unwanted internal binding , so why don't we use any other enzyme which can remove OH group from 3'end
642.

(a) How does the human body respond when vaccine is introduced into it? (b) It is said that vaccinations are a must for a healthy society. Justify. [3 Marks]

Answer» (a) How does the human body respond when vaccine is introduced into it?

(b) It is said that vaccinations are a must for a healthy society. Justify. [3 Marks]

643.

Which among the following are sexually transmitted diseases ?

Answer» Which among the following are sexually transmitted diseases ?
644.

does williamson synthesis always proceed through SN2 mechanism?

Answer» does williamson synthesis always proceed through SN2 mechanism?
645.

Cu+HNO3->Cu(NO3)2+NO+H2O.Blance thies equation by both methe

Answer» Cu+HNO3->Cu(NO3)2+NO+H2O.Blance thies equation by both methe
646.

The slow movement of the stomach of a person indicates that the person is:

Answer»

The slow movement of the stomach of a person indicates that the person is:



647.

Which of the following is not a habitat?

Answer»

Which of the following is not a habitat?


648.

Which of the following is the last step of biogas production?

Answer»

Which of the following is the last step of biogas production?


649.

If log S = log C + Z log A is similar to the linear equation: y = c+mx, then match the following: Column 1Column 21. yp. Z2. mq. log A3. xr. log C4. cs. log S

Answer»

If log S = log C + Z log A is similar to the linear equation: y = c+mx, then match the following:
Column 1Column 21. yp. Z2. mq. log A3. xr. log C4. cs. log S


650.

What is Davisson and germer experiment

Answer» What is Davisson and germer experiment