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17751.

In CAM-plants, carbon dioxide required for photosynthesis enters the plant body during

Answer»

In CAM-plants, carbon dioxide required for photosynthesis enters the plant body during


17752.

Which of the following instruments can be used to record plant growth by seconds?

Answer» Which of the following instruments can be used to record plant growth by seconds?
17753.

The maintenance of constant temperature inside the body is an example of

Answer»

The maintenance of constant temperature inside the body is an example of


17754.

Q21) Genetically modified sterile mosquitoes are being used in Brazil to control Dengue and Chikungunya. Consider the following statements regarding this. 1) The male mosquito’s bite spreads the disease 2) Sustained release of genetically modified sterile female mosquitoes (OX513A) in the city every week for one year helped cut the transmission rate drastically 3) Dengue is caused by Aedes aegypti mosquito. Which of the above statements is/are correct?

Answer»

Q21) Genetically modified sterile mosquitoes are being used in Brazil to control Dengue and Chikungunya. Consider the following statements regarding this.

1) The male mosquito’s bite spreads the disease

2) Sustained release of genetically modified sterile female mosquitoes (OX513A) in the city every week for one year helped cut the transmission rate drastically

3) Dengue is caused by Aedes aegypti mosquito.

Which of the above statements is/are correct?


17755.

Why do Mitochondria have their own DNA ?

Answer» Why do Mitochondria have their own DNA ?
17756.

Regarding the assertion and reason, choose the correct option: Assertion [A]: Most reptiles are examples of thermophiles. Reason [R]: Thermophiles can thrive only in low temperatures.

Answer»

Regarding the assertion and reason, choose the correct option:
Assertion [A]: Most reptiles are examples of thermophiles.
Reason [R]: Thermophiles can thrive only in low temperatures.

17757.

Which of the following are used to stain the cells?

Answer»

Which of the following are used to stain the cells?


17758.

Sources of nutrients for a rooted hydrophytic plant given in the diagram is from?

Answer»

Sources of nutrients for a rooted hydrophytic plant given in the diagram is from?


17759.

Given the diagram of L.S of a part of bark region of plant. Choose the answer with the correct combination of parts and alphabets.

Answer»

Given the diagram of L.S of a part of bark region of plant. Choose the answer with the correct combination of parts and alphabets.


17760.

The number of male gametes produced is much more than the number of female gametes in most organisms. The reason is that

Answer»

The number of male gametes produced is much more than the number of female gametes in most organisms. The reason is that


17761.

Environmental heterophylly is observed in:

Answer»

Environmental heterophylly is observed in:


17762.

Which of the following is not a nucleotide of DNA?

Answer»

Which of the following is not a nucleotide of DNA?


17763.

Nitrifying bacteria convert ___to nitrate.

Answer» Nitrifying bacteria convert ___to nitrate.
17764.

Is it right to say that the giant squid have thick nerve fibres for the quicker conduction of nerve impulses? If not, why?

Answer» Is it right to say that the giant squid have thick nerve fibres for the quicker conduction of nerve impulses? If not, why?
17765.

What are polar protic and polar apratim solvents?

Answer»

What are polar protic and polar apratim solvents?

17766.

Hii Sir, Actually I can't understanding properly The Ecosystem pyramid I have a doubt on this chapter.

Answer»

Hii Sir,

Actually I can't understanding properly The Ecosystem pyramid I have a doubt on this chapter.

17767.

___________ is the connective tissue found in vitreous humour of eye and umbilical cord of newborn babies.

Answer»

___________ is the connective tissue found in vitreous humour of eye and umbilical cord of newborn babies.


17768.

The maximum volume of air that can be released from the lungs by forceful expiration after deepest inspiration is called the ______.

Answer»

The maximum volume of air that can be released from the lungs by forceful expiration after deepest inspiration is called the ______.


17769.

What is the shape of red blood cells in human blood? What function do red blood cells perform ?

Answer»

What is the shape of red blood cells in human blood? What function do red blood cells perform ?

17770.

Which of the following is not a characteristic of prokaryotes?

Answer» Which of the following is not a characteristic of prokaryotes?
17771.

Distinguish between constipation and indigestion. Mention their major causes.

Answer»

Distinguish between constipation and indigestion. Mention their major causes.

17772.

Which of the following is not a function of the sympathetic nervous system?

Answer»

Which of the following is not a function of the sympathetic nervous system?


17773.

Regarding Assertion and Reason, choose the correct option. Assertion[A]: Selection markers give straightforward results as to which cells have been transformed. Reason[R]: Screening markers need X-gal stain to visualize the result of transformation procedure.

Answer»

Regarding Assertion and Reason, choose the correct option.
Assertion[A]: Selection markers give straightforward results as to which cells have been transformed.
Reason[R]: Screening markers need X-gal stain to visualize the result of transformation procedure.

17774.

Which is NOT a characteristic of mitochondria?

Answer» Which is NOT a characteristic of mitochondria?
17775.

Mammalian heart is enclosed by

Answer»

Mammalian heart is enclosed by


17776.

Given below are a few diagrams with each representing a step in rDNA technology. Match the diagrams with the steps they represent. i. Cloning ii. Screening iii. Gene incorporated in a vector iv. Inserted into a host v. Multiple copies using PCR vi. Isolation of gene of interest

Answer» Given below are a few diagrams with each representing a step in rDNA technology. Match the diagrams with the steps they represent.

i. Cloning
ii. Screening
iii. Gene incorporated in a vector
iv. Inserted into a host
v. Multiple copies using PCR
vi. Isolation of gene of interest
17777.

The Silent Valley has been preserved as it has

Answer» The Silent Valley has been preserved as it has
17778.

According to abiogenesis life originated from:

Answer» According to abiogenesis life originated from:
17779.

Find out the name of the microbes from which Cyclosporin-A (an immunosuppressive drug) and statins (blood cholesterol lowering agents) are obtained.

Answer»

Find out the name of the microbes from which Cyclosporin-A (an immunosuppressive drug) and statins (blood cholesterol lowering agents) are obtained.

17780.

Which one of the following is resistant to enzyme action

Answer» Which one of the following is resistant to enzyme action
17781.

Cleavage in the fertilised egg of humans

Answer»

Cleavage in the fertilised egg of humans


17782.

the enzyme carbonic anhydrase catalyses the hydration of CO2 .This reaction :CO2+H2O-H2CO3,is involved in the transfer of CO2 from tissues to the lungs via the bloodstream .One enzyme molecule hydrates 10^6 molecules of CO2 per second . How many kg of CO2 are hydrated in one hour in one litre by 1×10^-6 M enzyme.

Answer»

the enzyme carbonic anhydrase catalyses the hydration of CO2 .This reaction :CO2+H2O-H2CO3,is involved in the transfer of CO2 from tissues to the lungs via the bloodstream .One enzyme molecule hydrates 10^6 molecules of CO2 per second . How many kg of CO2 are hydrated in one hour in one litre by 1×10^-6 M enzyme.

17783.

Which of the following is common in chloroplast and mitochondria?

Answer»

Which of the following is common in chloroplast and mitochondria?


17784.

Which organ receives only oxygenated blood?

Answer»

Which organ receives only oxygenated blood?


17785.

Eight nucleate embryo sacs are

Answer»

Eight nucleate embryo sacs are


17786.

In moss, the sporophyte

Answer»

In moss, the sporophyte


17787.

Which stages of cell division do the figures A and B represent?

Answer»

Which stages of cell division do the figures A and B represent?


17788.

In , the lac operon gets switched on when

Answer»

In , the lac operon gets switched on when


17789.

Cistron is

Answer» Cistron is
17790.

The respiratory membrane is a combination of ­­­­­­­­­­­­­­___________________.

Answer»

The respiratory membrane is a combination of ­­­­­­­­­­­­­­___________________.


17791.

The neutrophil content is massively increased in a patient suffering from _____

Answer»

The neutrophil content is massively increased in a patient suffering from _____


17792.

Master endocrine gland is

Answer» Master endocrine gland is
17793.

Indole-3-acetic acid, called auxin, was first isolated from

Answer» Indole-3-acetic acid, called auxin, was first isolated from
17794.

Taxon includes

Answer»

Taxon includes


17795.

When breastfeeding is replaced by less nutritive food low in proteins and calories, the infants below the age of one year are likely to suffer from _______.

Answer»

When breastfeeding is replaced by less nutritive food low in proteins and calories, the infants below the age of one year are likely to suffer from _______.


17796.

Select the right sequence regarding replication of HIV in a cell.

Answer» Select the right sequence regarding replication of HIV in a cell.


17797.

The organism which completely lack a cell wall and can live without oxygen are

Answer»

The organism which completely lack a cell wall and can live without oxygen are


17798.

On analysis, a certain compound was found to contain iodine and oxygen in the ratio of 254 gm of iodine and 80gm of oxygen. The atomic mass of iodine is 127 and that of oxygen is 16. Which of the following is the formula of the compound

Answer»

On analysis, a certain compound was found to contain iodine and oxygen in the ratio of 254 gm of iodine and 80gm of oxygen. The atomic mass of iodine is 127 and that of oxygen is 16. Which of the following is the formula of the compound


17799.

What are the conditions necessary for fixation of atmospheric nitrogen by Rhizobium? What is their role in N2 - fixation?

Answer»

What are the conditions necessary for fixation of atmospheric nitrogen by Rhizobium? What is their role in N2 - fixation?

17800.

At what levels can genes be regulated in eukaryotes? [2]

Answer»

At what levels can genes be regulated in eukaryotes? [2]