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3751.

What is the percentage of carbon dioxide in exhaled air? 21% 0.04% 16.4% 4.4%

Answer»

What is the percentage of carbon dioxide in exhaled air?


21%

0.04%

16.4%

4.4%

3752.

Why doew membrane become more permeable to Na+ on application of stimulud?

Answer» Why doew membrane become more permeable to Na+ on application of stimulud?
3753.

In process of hemodialysis, how does the machine removes impure blood continuously? Why doesn't it stops on regular intervals?

Answer» In process of hemodialysis, how does the machine removes impure blood continuously? Why doesn't it stops on regular intervals?
3754.

Do mammals have nucleus's or not?

Answer» Do mammals have nucleus's or not?
3755.

Using Punnett square, try to find out the nature of offspring of a test cross. What ratio did we get?

Answer» Using Punnett square, try to find out the nature of offspring of a test cross. What ratio did we get?
3756.

कुटज किस प्रकार अपनी अपराजेय जीवनी-शक्ति की घोषणा करता है?

Answer» कुटज किस प्रकार अपनी अपराजेय जीवनी-शक्ति की घोषणा करता है?
3757.

Which of the following component is produced from megakaryocytes?

Answer»

Which of the following component is produced from megakaryocytes?


3758.

You might have observed that sometimes your pet dog starts barking though no one is seen near in its surroundings or no disturbance heard nearby. Does this observation raise any doubts in your mind about the peculiar behavior of dog after your understanding about ‘range of hearing the sound’. If yes, write them.

Answer» You might have observed that sometimes your pet dog starts barking though no one is seen near in its surroundings or no disturbance heard nearby. Does this observation raise any doubts in your mind about the peculiar behavior of dog after your understanding about ‘range of hearing the sound’. If yes, write them.
3759.

The experimental set up shown here to demonstrate that ‘CO2 is given out during respiration’, did not yield expected results because :(1) the flask was not air tight(2) there was no KOH in test tube in the flask(3) the delivery tube was dipped in water(4) the germinating seeds were not immersed in water

Answer» The experimental set up shown here to demonstrate that ‘CO2 is given out during respiration’, did not yield expected results because :







(1) the flask was not air tight

(2) there was no KOH in test tube in the flask

(3) the delivery tube was dipped in water

(4) the germinating seeds were not immersed in water
3760.

Prove analytically in open organ pipe v=n(v/2l)

Answer» Prove analytically in open organ pipe v=n(v/2l)
3761.

What is the location of simple squamous epithelium in our body?

Answer» What is the location of simple squamous epithelium in our body?
3762.

Match the column – I and Column - II: Column – IColumn – IIa.Exocoetus1Fighting fishb.Clarias2.Flying fishc.Pterophyllum3.Rohud.Betta4.Sea Horsee.Hippocampus5.MagurfLabeo6.Angel Fish

Answer»

Match the column – I and Column - II:













































Column – IColumn – II
a.Exocoetus1Fighting fish
b.Clarias2.Flying fish
c.Pterophyllum3.Rohu
d.Betta4.Sea Horse
e.Hippocampus5.Magur
fLabeo6.Angel Fish


3763.

Is osmosis movement of water from higher concentration to lower concentration or vise-vesa?

Answer»

Is osmosis movement of water from higher concentration to lower concentration or vise-vesa?

3764.

How can the human body be considered an open system?

Answer» How can the human body be considered an open system?
3765.

The outermost protective covering of the brain is called as:

Answer»

The outermost protective covering of the brain is called as:



3766.

Cockroaches breed in _________.

Answer»

Cockroaches breed in _________.


3767.

Name the target organ for the following disease(a) Fungal disease targets___.

Answer» Name the target organ for the following disease



(a) Fungal disease targets___.
3768.

What makes the actively acquired immunity last longer?

Answer»

What makes the actively acquired immunity last longer?


3769.

Why do meristmatic tissues have dense cytoplasm and a prominent nucleus?

Answer»

Why do meristmatic tissues have dense cytoplasm and a prominent nucleus?

3770.

What percentage of dust particles can be removed if we use an electrostatic precipitator for the treatment of gaseous pollutants?

Answer»

What percentage of dust particles can be removed if we use an electrostatic precipitator for the treatment of gaseous pollutants?


3771.

(a) What advantage does Amoeba derive by changing shape?(b) How do scientists observe and study the living cells?

Answer»

(a) What advantage does Amoeba derive by changing shape?



(b) How do scientists observe and study the living cells?



3772.

Plant tissues are categorized into meristematic tissue based on which of the following criteria?

Answer»

Plant tissues are categorized into meristematic tissue based on which of the following criteria?


3773.

Usually he made a lot of fuss to take Aunt Polly's medicines, but this time he took the medicines quietly.

Answer»

Usually he made a lot of fuss to take Aunt Polly's medicines, but this time he took the medicines quietly.

3774.

Which of the following is a useful tool for getting rid of unwanted plants is?

Answer»

Which of the following is a useful tool for getting rid of unwanted plants is?



3775.

The ___(i)___ carries blood from the digestive tract to the liver and ____(ii)_____carries blood from the liver to the inferior vena cava.

Answer»

The ___(i)___ carries blood from the digestive tract to the liver and ____(ii)_____carries blood from the liver to the inferior vena cava.


3776.

What does the following sign on packed food items indicate about the type of food?

Answer»

What does the following sign on packed food items indicate about the type of food?



Image result for non vegetarian mark



3777.

Question 27Real organs are absent in(a) Mollusca(b) Coelenterata(c) Arthropoda(d) Echinodermata

Answer»

Question 27

Real organs are absent in




(a) Mollusca

(b) Coelenterata

(c) Arthropoda

(d) Echinodermata



3778.

Write full form of NDRI.

Answer»

Write full form of NDRI.

3779.

Describe phylum.

Answer» Describe phylum.
3780.

Which of the following organisms have exclusively heterotrophic mode of nutrition?

Answer»

Which of the following organisms have exclusively heterotrophic mode of nutrition?


3781.

Demonstrate the formation of convective currents.

Answer»

Demonstrate the formation of convective currents.

3782.

Kharif crops are harvested in

Answer»

Kharif crops are harvested in



3783.

The causative agent of mad cow disease??

Answer» The causative agent of mad cow disease??
3784.

What is water harvesting ?

Answer»

What is water harvesting ?

3785.

In brief state what happens when a) dry apricot are left for sometime in pure water and later transferred to sugar b) a red blood cell is kept in a concentrated saline solution. c) plasma membrane breaks down. d) Rio leaf are boiled in a water first and then a drop of sugar solution is put on it. e) Golgi apparatus is removed from the cell.

Answer» In brief state what happens when
a) dry apricot are left for sometime in pure water and later transferred to sugar
b) a red blood cell is kept in a concentrated saline solution.
c) plasma membrane breaks down.
d) Rio leaf are boiled in a water first and then a drop of sugar solution is put on it.
e) Golgi apparatus is removed from the cell.
3786.

___ is the amount of air that we breathe in and out during normal breathing.

Answer»

___ is the amount of air that we breathe in and out during normal breathing.


3787.

Fill in the blanks with suitable words : Detergents contain ______ like fertilizers. mercury is a _______ substance.

Answer»

Fill in the blanks with suitable words :

Detergents contain ______ like fertilizers.

mercury is a _______ substance.

3788.

Why blood is called as connective tissue and why hemoglobin present only in human blood?

Answer» Why blood is called as connective tissue and why hemoglobin present only in human blood?
3789.

Have you read or heard anything about polio? Where? Have you read or heard any news about ‘pulse polio’? What? Do you know of anyone who has pulse polio?

Answer»

  • Have you read or heard anything about polio? Where?


  • Have you read or heard any news about ‘pulse polio’? What?




  • Do you know of anyone who has pulse polio?



3790.

In ECG, the T wave represents

Answer»

In ECG, the T wave represents


3791.

Choose the correct options for the characteristics of hypogeal germination.

Answer»

Choose the correct options for the characteristics of hypogeal germination.


3792.

What are the steps to carry out blood test for malaria?

Answer» What are the steps to carry out blood test for malaria?
3793.

Mention any one major difference and one major similarity in insects and birds?

Answer»

Mention any one major difference and one major similarity in insects and birds?

3794.

The ultimate source of energy for all living organisms is the __ .

Answer»

The ultimate source of energy for all living organisms is the __ .

3795.

Which of the following is not a greenhouse gas?

Answer» Which of the following is not a greenhouse gas?
3796.

What is chromatids,chromatin and spindle fibers

Answer» What is chromatids,chromatin and spindle fibers
3797.

What is the difference between the process of respiration in and digestion.

Answer»

What is the difference between the process of respiration in and digestion.

3798.

Freshwater fish is kept in a sea water and why?

Answer»

Freshwater fish is kept in a sea water and why?

3799.

Match the following blood components with their function(s).Column IColumn II1. RBCa. Transport of energy and electrolytes2. WBCb. Blood clotting3. Plateletsc. Immunity and Defense4. Plasmad. Transport of gases

Answer»

Match the following blood components with their function(s).


Column IColumn II1. RBCa. Transport of energy and electrolytes2. WBCb. Blood clotting3. Plateletsc. Immunity and Defense4. Plasmad. Transport of gases



3800.

Give one word for each of the following : (a) A group of similar cells performing a specific function. (b) Cells least specialized in the plants. (c) Cells responsible for increase in diameter of the stem and root of dicot plants.

Answer»

Give one word for each of the following :
(a) A group of similar cells performing a specific function.
(b) Cells least specialized in the plants.
(c) Cells responsible for increase in diameter of the stem and root of dicot plants.