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5301.

Difference between Organic and inorganic materials. Name some inorganic and organic material.

Answer»

Difference between Organic and inorganic materials. Name some inorganic and organic material.

5302.

Select the statements that describe characteristics of genes : (i) genes are specific sequence of bases in a DNA molecule (ii) a gene does not code for proteins (iii) in individuals of a given species, a specific gene is located on a particular chromosome (iv) each chromosome has only one gene (a) (i) and (ii) (b) (i) and (iii) (c) (i) and (iv) (d) (ii) and (iv)

Answer»

Select the statements that describe characteristics of genes :

(i) genes are specific sequence of bases in a DNA molecule

(ii) a gene does not code for proteins

(iii) in individuals of a given species, a specific gene is located on a particular chromosome

(iv) each chromosome has only one gene

(a) (i) and (ii) (b) (i) and (iii) (c) (i) and (iv) (d) (ii) and (iv)

5303.

Which of the following describes a variegated leaf?

Answer»

Which of the following describes a variegated leaf?




5304.

Prokaryotes are included in the kingdom___.

Answer»

Prokaryotes are included in the kingdom___.



5305.

Which hormone controls the blood pressure in emergency?

Answer»

Which hormone controls the blood pressure in emergency?


5306.

A person suffers from paralytic stroke and is unable to express his feelings of happiness, pain, anger and other emotions through his face. The possible reason could be __________________

Answer»

A person suffers from paralytic stroke and is unable to express his feelings of happiness, pain, anger and other emotions through his face. The possible reason could be __________________


5307.

Which of the following valves will shut during systole of the right ventricle?

Answer»

Which of the following valves will shut during systole of the right ventricle?


5308.

Name any two animals which do not possess any circulatory system.

Answer»

Name any two animals which do not possess any circulatory system.



5309.

The correct sequence of the process of urine formation in human body is________.

Answer»

The correct sequence of the process of urine formation in human body is________.


5310.

laugh fish fan few cough dish van view rough wish ran dew

Answer»




















laugh fish fan few
cough dish van view
rough wish ran dew
5311.

RQ of fat is

Answer»

RQ of fat is


5312.

Question 23 In human females, each time during maturation and release of an egg, the inner wall of the uterus thickens. Is this thickening permanent? Give reasons.

Answer» Question 23
In human females, each time during maturation and release of an egg, the inner wall of the uterus thickens. Is this thickening permanent? Give reasons.
5313.

What is a 3rd generation vaccine

Answer» What is a 3rd generation vaccine
5314.

In reptiles like alligators, some turtles,tuatara, sex is determined by _________

Answer»

In reptiles like alligators, some turtles,tuatara, sex is determined by _________


5315.

Which among them is not an evidence that indicates evolution from a common ancestor?

Answer»

Which among them is not an evidence that indicates evolution from a common ancestor?



5316.

Which of the following are true about a haemophilic patient?

Answer»

Which of the following are true about a haemophilic patient?


5317.

Question 45In question 44, what are the combinations of character in the F2 progeny? What are their ratios?

Answer»

Question 45

In question 44, what are the combinations of character in the F2 progeny? What are their ratios?



5318.

Name the hormone secreted by hypothalamus gland ?

Answer»

Name the hormone secreted by hypothalamus gland ?

5319.

Definition of Geographical and reproductive isolation

Answer»

Definition of Geographical and reproductive isolation

5320.

Rahul came across an animal having a streamlined and slippery body covered with scales. Which habitat does that animal belong to?

Answer»

Rahul came across an animal having a streamlined and slippery body covered with scales. Which habitat does that animal belong to?


5321.

What is biogenesis and mitophagy?

Answer» What is biogenesis and mitophagy?
5322.

Like how the digestion of proteins is done by proteases, digestion of carbohydrates by carbohydrates, digestion of fats by lipases, how does the digestion of vitamins and minerals occur?

Answer» Like how the digestion of proteins is done by proteases, digestion of carbohydrates by carbohydrates, digestion of fats by lipases, how does the digestion of vitamins and minerals occur?
5323.

Which of the following organelles will be distributed between daughter cells during cytokinesis?

Answer»

Which of the following organelles will be distributed between daughter cells during cytokinesis?


5324.

If the function of the heart is asked then do I have to mention the structure of the heart also or something about it( the question is of 5 marks)

Answer»

If the function of the heart is asked then do I have to mention the structure of the heart also or something about it( the question is of 5 marks)

5325.

What are amphibians?

Answer» What are amphibians?
5326.

Why are our eyes more sensitive to yellow light than red light?

Answer» Why are our eyes more sensitive to yellow light than red light?
5327.

Why are budding, fragmentation and regeneration, all considered to be asexual type of reproduction ?

Answer»

Why are budding, fragmentation and regeneration, all considered to be asexual type of reproduction ?

5328.

What is placenta and what are its functions? [5 MARKS]

Answer» What is placenta and what are its functions? [5 MARKS]
5329.

Consider three genes Aa,Bb and Cc responsible for skin color inheritance. Then the phenotypes of persons with genotypes AABBCC and aabbcc respectively would be

Answer»

Consider three genes Aa,Bb and Cc responsible for skin color inheritance. Then the phenotypes of persons with genotypes AABBCC and aabbcc respectively would be


5330.

Account for the high birth rate in India. [5 MARKS]

Answer» Account for the high birth rate in India. [5 MARKS]
5331.

Define genetic engineering.

Answer»

Define genetic engineering.

5332.

Mammals exhibit a great degree of __to fit in the habitats in which they live.

Answer»

Mammals exhibit a great degree of __to fit in the habitats in which they live.

5333.

Getting rid of wastes is one of the life processes. What name is given to this process?

Answer»

Getting rid of wastes is one of the life processes. What name is given to this process?


5334.

Structure into which the graafian follicle develops after ovulation.

Answer»

Structure into which the graafian follicle develops after ovulation.


5335.

Osmosis and diffusion are the same except that in osmosis there is

Answer»

Osmosis and diffusion are the same except that in osmosis there is


5336.

5% of CO2 is dissolved in ___(i)____. Another form in which CO2 is transported is when it combines with hemoglobin and this form is called ___(ii)____hemoglobin. CO2 entering the erythrocytes reacts with water to form carbonic acid in the presence of ____(iii)_____. Carbonic acid is an intermediate step; it dissociates to form a hydrogen ion (H+) from the carbonic acid, leaving___(iv)____ dissolved in the blood.

Answer»

5% of CO2 is dissolved in ___(i)____. Another form in which CO2 is transported is when it combines with hemoglobin and this form is called ___(ii)____hemoglobin. CO2 entering the erythrocytes reacts with water to form carbonic acid in the presence of ____(iii)_____. Carbonic acid is an intermediate step; it dissociates to form a hydrogen ion (H+) from the carbonic acid, leaving___(iv)____ dissolved in the blood.


5337.

Which of the following is the correct statement regarding bile ? (a) secreted by bile duct and stored in liver (b) secreted by gall bladder and stored in liver (c) secreted by liver and stored in bile duct (d) secreted by liver and stored in gall bladder

Answer»

Which of the following is the correct statement regarding bile ?
(a) secreted by bile duct and stored in liver
(b) secreted by gall bladder and stored in liver
(c) secreted by liver and stored in bile duct
(d) secreted by liver and stored in gall bladder

5338.

why i allele not combines with protein as I^A and I^B do?

Answer» why i allele not combines with protein as I^A and I^B do?
5339.

What is Trabeculae in spongy bone?

Answer» What is Trabeculae in spongy bone?
5340.

Describe the condition of the mariners as expressed in the thirteenth stanza.

Answer»

Describe the condition of the mariners as expressed in the thirteenth stanza.

5341.

Deficiency of which of the following hormones causes goitre?

Answer»

Deficiency of which of the following hormones causes goitre?


5342.

Question 25 Which among the following is not the function of the testes during puberty? (i) formation of germ cells (ii) secretion of testosterone (iii) development of placenta (iv) secretion of estrogen (a) (i) and (ii) (b) (ii) and (iii) (c) (iii) and (iv) (d) (i) and (iv)

Answer»

Question 25
Which among the following is not the function of the testes during puberty?

(i) formation of germ cells
(ii) secretion of testosterone
(iii) development of placenta
(iv) secretion of estrogen

(a) (i) and (ii)
(b) (ii) and (iii)
(c) (iii) and (iv)
(d) (i) and (iv)

5343.

which among the following is known as the father of green revolution in India

Answer»

which among the following is known as the father of green revolution in India


5344.

Give scientific reasons:1. Roots of plants grow away from light.2. Hormones secreted by the endocrine glands are present everywhere in the body.3. Insulin plays an important role in controlling the sugar level of blood.

Answer»

Give scientific reasons:



1. Roots of plants grow away from light.



2. Hormones secreted by the endocrine glands are present everywhere in the body.



3. Insulin plays an important role in controlling the sugar level of blood.

5345.

WHICH IS A LOW SPIN COMPLEX ? A) \lbrack Fe(CN)6 \rbrack3- B) \lbrack Co(NO2)6 \rbrack3- C) \lbrack Mn(CN)6\rbrack3- D) ALL OF THE ABOVE

Answer» WHICH IS A LOW SPIN COMPLEX ? A) \lbrack Fe(CN)6 \rbrack3- B) \lbrack Co(NO2)6 \rbrack3- C) \lbrack Mn(CN)6\rbrack3- D) ALL OF THE ABOVE
5346.

Red-green colour blindness is a sex-linked inherited characteristic. The gene (allele) b for colour blindness is recessive to the gene B for normal vision. The gene b is carried only on the X chromosome. (a) Describe these phenotypes. (b) Explain why red-green colour blindness is more likely to occur in men than in women. [4 MARKS]

Answer» Red-green colour blindness is a sex-linked inherited characteristic. The gene (allele) b for colour blindness is recessive to the gene B for normal vision. The gene b is carried only on the X chromosome.
(a) Describe these phenotypes.



(b) Explain why red-green colour blindness is more likely to occur in men than in women. [4 MARKS]
5347.

Give reasons why multicellular organisms require special organ for exchange of gases b/w their body and their environment

Answer»

Give reasons why multicellular organisms require special organ for exchange of gases b/w their body and their environment

5348.

Which of these is not a living fossil?

Answer»

Which of these is not a living fossil?


5349.

List three methods of controlling noise pollution.

Answer» List three methods of controlling noise pollution.
5350.

The top part A of the flask-shaped reproductive organ X in the flower of a plant secrets a surgery substance into its lower part B which goes towards the bottom part C of the flask-shaped organ. When a tiny grain D coming from the top part E of another reproductive organ Y in the flower falls on part A, it grows a long tube F through the organ X in response to the sugary substance and reaches the bottom part C of flask-shaped organ to carry out fertilisation.(a) What is (i) organ X, and (ii) organ Y, inside the flower?(b) Name parts (i) A (ii) B, and (iii) C, of flask-shaped organ.(c) Name (i) grain D, and (ii) part E of organ Y.(d) Name the tube F.(e) What is the phenomenon of growing a long tube in response to sugary substance in the process of fertilisation in a flower known as?

Answer» The top part A of the flask-shaped reproductive organ X in the flower of a plant secrets a surgery substance into its lower part B which goes towards the bottom part C of the flask-shaped organ. When a tiny grain D coming from the top part E of another reproductive organ Y in the flower falls on part A, it grows a long tube F through the organ X in response to the sugary substance and reaches the bottom part C of flask-shaped organ to carry out fertilisation.

(a) What is (i) organ X, and (ii) organ Y, inside the flower?

(b) Name parts (i) A (ii) B, and (iii) C, of flask-shaped organ.

(c) Name (i) grain D, and (ii) part E of organ Y.

(d) Name the tube F.

(e) What is the phenomenon of growing a long tube in response to sugary substance in the process of fertilisation in a flower known as?