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201.

Centre of a circle lies in the ___ of the circle.

Answer»

Centre of a circle lies in the ___ of the circle.

202.

In man, the zymogen or chief cells are mainly found in

Answer»

In man, the zymogen or chief cells are mainly found in


203.

the most common indicator organism that represents polluted water is

Answer» the most common indicator organism that represents polluted water is
204.

nucleophile strength C6H5O-,C6H5S-,C6H5CH2-,CH3COCH2-

Answer» nucleophile strength C6H5O-,C6H5S-,C6H5CH2-,CH3COCH2-
205.

A reflex action does NOT involve:

Answer»

A reflex action does NOT involve:



206.

What is the most important constituent of Polymerase Chain Reaction?

Answer» What is the most important constituent of Polymerase Chain Reaction?
207.

The living components of xylem are

Answer»

The living components of xylem are


208.

The number of phenotypes and genotypes formed in F2 generation if a plant with AABbCc genotype undergoes self pollination will be- (a)64 and 8 (b)16 and 27 (c)4 and 9 (d) 8and 9

Answer» The number of phenotypes and genotypes formed in F2 generation if a plant with AABbCc genotype undergoes self pollination will be- (a)64 and 8 (b)16 and 27 (c)4 and 9 (d) 8and 9
209.

Rafflesia arnoldii, the world’s largest individual flower, is kind of nasty. Found in the forests of Malaysia and Indonesia, its giant red-brown blossom is nearly 1 meter (3.3 feet) in diameter and weighs up to 11 kg (24 pounds). It cannot photosynthesise it depends on nutrients that it steals from the roots of neighboring Tetrastigma vines. Identify the host and the parasite in this relationship.

Answer»

Rafflesia arnoldii, the world’s largest individual flower, is kind of nasty. Found in the forests of Malaysia and Indonesia, its giant red-brown blossom is nearly 1 meter (3.3 feet) in diameter and weighs up to 11 kg (24 pounds). It cannot photosynthesise it depends on nutrients that it steals from the roots of neighboring Tetrastigma vines. Identify the host and the parasite in this relationship.

210.

Why for isobaric process dalta W is nRdalta T and not 0

Answer» Why for isobaric process dalta W is nRdalta T and not 0
211.

Given below is a diagram representing a pistil. Identify the labeled parts. [2 MARKS]

Answer»

Given below is a diagram representing a pistil. Identify the labeled parts. [2 MARKS]

212.

Question 2If the organisation of a cell is destroyed due to some physical or chemical influence, what will be its outcome?

Answer»

Question 2

If the organisation of a cell is destroyed due to some physical or chemical influence, what will be its outcome?



213.

Damage to a single cell in Paramecium can cause its death. Explain.

Answer» Damage to a single cell in Paramecium can cause its death. Explain.
214.

____________ and ____________ may account for over a third of global population in 2100.

Answer»

____________ and ____________ may account for over a third of global population in 2100.


215.

Bread when kept outside in humid conditions develops mould because

Answer»

Bread when kept outside in humid conditions develops mould because


216.

What is adaptation? Explain.

Answer» What is adaptation? Explain.
217.

Cortisol glucocorticoid is a immuno suppresor i.e it hampers our immune system. But still it is produced for which purpose

Answer» Cortisol glucocorticoid is a immuno suppresor i.e it hampers our immune system. But still it is produced for which purpose
218.

_____________ is a single-celled body that has an oval shape.

Answer»

_____________ is a single-celled body that has an oval shape.


219.

List down five major steps involved in process of nutrition.

Answer» List down five major steps involved in process of nutrition.
220.

The organism that has a parasitic mode of nutrition is

Answer»

The organism that has a parasitic mode of nutrition is

221.

The most abundant compound in the cytoplasm is:

Answer» The most abundant compound in the cytoplasm is:
222.

Choose the option that correctly identifies the method of vegetative propagation shown above and describes the advantage of the process

Answer»

Choose the option that correctly identifies the method of vegetative propagation shown above and describes the advantage of the process


223.

Question 35Name any cell organelle which is non membranous.

Answer»

Question 35

Name any cell organelle which is non membranous.



224.

Which of the following tuberous root is a not a tap root?

Answer»

Which of the following tuberous root is a not a tap root?


225.

Muscle cells respire anaerobically due to deficiency of:

Answer»

Muscle cells respire anaerobically due to deficiency of:


226.

Veins have valves which allow blood to flow only in one direction. Arteries do not have valves. Yet the blood flows in one direction only. Can you explain why?

Answer» Veins have valves which allow blood to flow only in one direction. Arteries do not have valves. Yet the blood flows in one direction only. Can you explain why?
227.

Give examples of activities for which our body cells need energy.

Answer» Give examples of activities for which our body cells need energy.
228.

Is insectivorous plants are hetrerotrophs or autotrophs?

Answer»

Is insectivorous plants are hetrerotrophs or autotrophs?

229.

The cell organelle associated with intercellular digestion of macromolecules is

Answer»

The cell organelle associated with intercellular digestion of macromolecules is


230.

In which of the following reproduction, parental identity is lost?

Answer»

In which of the following reproduction, parental identity is lost?



231.

The blood vessel that normally carries oxygen rich blood is known as ___.

Answer»

The blood vessel that normally carries oxygen rich blood is known as ___.

232.

When different DNA forms or molecules or fragmented DNA are run on agarose gel then: (1)Circular DNA form moves slower than Linear DNA form of same size. (2)Super coiled DNA moves faster than circular DNA form of same size. (3)Linear and circular DNA forms of same size move together. (4)DNA fragments irrespective of their form always move towards cathode.

Answer» When different DNA forms or molecules or fragmented DNA are run on agarose gel then: (1)Circular DNA form moves slower than Linear DNA form of same size. (2)Super coiled DNA moves faster than circular DNA form of same size. (3)Linear and circular DNA forms of same size move together. (4)DNA fragments irrespective of their form always move towards cathode.
233.

Which of the following cell parts is described by the “fluid mosaic model”?

Answer»

Which of the following cell parts is described by the “fluid mosaic model”?


234.

225 ml of 0.1 M acetic acid is titrated with 0.1 MNaOH solution. The pH of the solution atequivalence point will be (log 5 = 0.7 and pKa ofCH,COOH 4.76)(1) 8.73(2) 9.73(4) 8.212(3) 7.13

Answer» 225 ml of 0.1 M acetic acid is titrated with 0.1 MNaOH solution. The pH of the solution atequivalence point will be (log 5 = 0.7 and pKa ofCH,COOH 4.76)(1) 8.73(2) 9.73(4) 8.212(3) 7.13
235.

Question 29Flexibility in plants is due to(a) collenchyma(b) sclerenchyma(c) parenchyma(d) chlorenchyma

Answer»

Question 29

Flexibility in plants is due to




(a) collenchyma

(b) sclerenchyma

(c) parenchyma

(d) chlorenchyma



236.

Which of the following are bacteria?

Answer»

Which of the following are bacteria?


237.

Write a note on blood donation.

Answer»

Write a note on blood donation.

238.

What is stomata?

Answer» What is stomata?
239.

Which of the following organisms use parasitic mode of nutrition?

Answer»

Which of the following organisms use parasitic mode of nutrition?


240.

Which of the following organisms have chitin in their cell walls?

Answer»

Which of the following organisms have chitin in their cell walls?


241.

Look at the following picture and answer the question that follows:a) Name the different joints numbered in the diagram.b) Which of these are examples of a hinge joint?

Answer» Look at the following picture and answer the question that follows:

a) Name the different joints numbered in the diagram.

b) Which of these are examples of a hinge joint?
242.

explain the working of eletric moto

Answer» explain the working of eletric moto
243.

How many mitosis and meiosis are required for formation of 400 male gametes in cyperus

Answer» How many mitosis and meiosis are required for formation of 400 male gametes in cyperus
244.

The average atmospheric condition of a place taken over a short interval of time is called:

Answer»

The average atmospheric condition of a place taken over a short interval of time is called:


245.

_______ helps to grind and crush food.

Answer»

_______ helps to grind and crush food.


246.

The true set of values of x for which the fuction,f(x)= xlnx - x + 1is positive is

Answer» The true set of values of x for which the fuction,f(x)= xlnx - x + 1is positive is
247.

Briefly explain.“Nutrition” and “respiration” are important factors for living beings.

Answer» Briefly explain.

“Nutrition” and “respiration” are important factors for living beings.


248.

In a mango orchard, almost all the mango trees present are grown using stem cuttings. Why do you think this is so?

Answer»

In a mango orchard, almost all the mango trees present are grown using stem cuttings. Why do you think this is so?


249.

Statement 1: Pisces have a three-chambered heart. Statement 2: Seahorse belongs to class pisces.

Answer»

Statement 1: Pisces have a three-chambered heart.

Statement 2: Seahorse belongs to class pisces.


250.

For how much time will the cattle chew their cud?

Answer» For how much time will the cattle chew their cud?