18288 + Interview Questions in Biology

1.	Which of the phrases best helps to bring out the precise meaning of 'consciously strained'?
Answer» Which of the phrases best helps to bring out the precise meaning of 'consciously strained'?

Discussion

2.	The wood of Gymnosperms is called softwood since it
Answer» The wood of Gymnosperms is called softwood since it

Discussion

3.	(a) Select the homologous structures from the combinations given below: (i) Forelimbs of whales and bats (ii) Tuber of potato and sweet potato (iii) Eyes of octopus and mammals (iv) Thorns of Bougainvillea and tendrils of Cucurbita (b) State the kind of evolution they represent. [2]
Answer» (a) Select the homologous structures from the combinations given below: (i) Forelimbs of whales and bats (ii) Tuber of potato and sweet potato (iii) Eyes of octopus and mammals (iv) Thorns of Bougainvillea and tendrils of Cucurbita (b) State the kind of evolution they represent. [2]

Discussion

4.	AIDS is caused by HIV that principally infects
Answer» AIDS is caused by HIV that principally infects

Discussion

5.	I have a doubt. I have read that methanogens are present in cows gut. Hence, methanogens digest whatever they can in the cow's gut. There should hence be nothing in cow's excreta that can be digested by methanogens (Everything is digested before excretion). If I am correct till here.. it means that if we provide cow's dung to methanogens for them to break it down they have nothing left and won't be able to break it down. Then how can we use cow dung in a biogas plant because cow dung has nothing left to be digested by methanogens!!!???
Answer» I have a doubt. I have read that methanogens are present in cows gut. Hence, methanogens digest whatever they can in the cow's gut. There should hence be nothing in cow's excreta that can be digested by methanogens (Everything is digested before excretion). If I am correct till here.. it means that if we provide cow's dung to methanogens for them to break it down they have nothing left and won't be able to break it down. Then how can we use cow dung in a biogas plant because cow dung has nothing left to be digested by methanogens!!!???

Discussion

6.	IUT is a very popular method of forming embryos in vivo. State whether true or false.If false give reason.
Answer» IUT is a very popular method of forming embryos in vivo. State whether true or false.If false give reason.

Discussion

7.	The branch of chemistry in which we study about carbon and its compound is known as:
Answer» The branch of chemistry in which we study about carbon and its compound is known as:

Discussion

8.	First mammals occurred in which era period?
Answer» First mammals occurred in which era period?

Discussion

9.	Which of the cells are phagocytic as well as scavengers?
Answer» Which of the cells are phagocytic as well as scavengers?

Discussion

10.	___ is a form of ssexual reproduction that is similar to sexual reproduction.
Answer» ___ is a form of ssexual reproduction that is similar to sexual reproduction.

Discussion

11.	Which of the following is a contraceptive?
Answer» Which of the following is a contraceptive?

Discussion

12.	Male and female gametophytes are independent and free-living in
Answer» Male and female gametophytes are independent and free-living in

Discussion

13.	Most abundant elements in the living cells are
Answer» Most abundant elements in the living cells are

Discussion

14.	Which of the following is a partial root parasite?
Answer» Which of the following is a partial root parasite?

Discussion

15.	Consider the Assertion and the Reason, and choose the correct option. Assertion [A]: All muscles follow “all or none” principle. Reason [R]: If a stimulus is above a certain threshold, a nerve or muscle fiber will fire.
Answer» Consider the Assertion and the Reason, and choose the correct option. Assertion [A]: All muscles follow “all or none” principle. Reason [R]: If a stimulus is above a certain threshold, a nerve or muscle fiber will fire.

15.

Consider the Assertion and the Reason, and choose the correct option. Assertion [A]: All muscles follow “all or none” principle. Reason [R]: If a stimulus is above a certain threshold, a nerve or muscle fiber will fire.

Answer»

Consider the Assertion and the Reason, and choose the correct option.
Assertion [A]: All muscles follow “all or none” principle.

Reason [R]: If a stimulus is above a certain threshold, a nerve or muscle fiber will fire.

Discussion

16.	Match the following regarding transcription: p. Initiationi. Ribonucleotides arepolymerised according to the codeq. Elongationii. RNA polymerase binds to TATA boxr. Terminationiii. mRNA is bound by protective moleculess. Cappingiv. RNA polymerase detaches from DNA
Answer» Match the following regarding transcription: $\begin{matrix} p. Initiation & i. Ribonucleotides arepolymerised according to the code q. Elongation & ii. RNA polymerase binds to TATA box r. Termination & iii. mRNA is bound by protective molecules s. Capping & iv. RNA polymerase detaches from DNA \end{matrix}$

Discussion

17.	‘Horse tail’ is:
Answer» ‘Horse tail’ is:

Discussion

18.	Chemically insulin is a
Answer» Chemically insulin is a

Discussion

19.	Aspirin is obtained from:
Answer» Aspirin is obtained from:

Discussion

20.	Refer the given diagram. What does it represent?
Answer» Refer the given diagram. What does it represent?

20.

Refer the given diagram. What does it represent?

Answer»

Refer the given diagram. What does it represent?

Discussion

21.	The portion of the endometrium that covers the embryo and is located between the embryo and uterine cavity is the:
Answer» The portion of the endometrium that covers the embryo and is located between the embryo and uterine cavity is the:

Discussion

22.	A tree which is completely girdled including the bark may survive for sometime, but will ultimately die because
Answer» A tree which is completely girdled including the bark may survive for sometime, but will ultimately die because

Discussion

23.	Analyse the events during every stage of cell cycle and notice how the following two parameters change (i) Number of chromosomes (N) per cell (ii) Amount of DNA content (C) per cell
Answer» Analyse the events during every stage of cell cycle and notice how the following two parameters change (i) Number of chromosomes (N) per cell (ii) Amount of DNA content (C) per cell

Discussion

24.	Offsprings formed due to sexual reproduction have better chances of survival. Why? Is this statement always true?
Answer» Offsprings formed due to sexual reproduction have better chances of survival. Why? Is this statement always true?

Discussion

25.	Which essential element plays an important role in the opening and closing of stomata?
Answer» Which essential element plays an important role in the opening and closing of stomata?

Discussion

26.	(a) What is the term used to describe the process shown above? (b) What is the effect of DDT accumulation in birds? (c) Mention one metal which also undergoes the above phenomenon. [1+1+1]
Answer» (a) What is the term used to describe the process shown above? (b) What is the effect of DDT accumulation in birds? (c) Mention one metal which also undergoes the above phenomenon. [1+1+1]

Discussion

27.	Which among the following statements is false?
Answer» Which among the following statements is false?

Discussion

28.	Hibernating animals have tissues containing mitochondira with a membrane protein that accelerates electron transport while blocking the synthesis of ATP. What is the consequence of this?
Answer» Hibernating animals have tissues containing mitochondira with a membrane protein that accelerates electron transport while blocking the synthesis of ATP. What is the consequence of this?

Discussion

29.	Draw a labelled diagram of a section through ovary.
Answer» Draw a labelled diagram of a section through ovary.

Discussion

30.	A plant breeder has two varieties of plants, one that produces larger fruits and the other that produces more number of fruits. He wants to ensure desired pollination among the flowers of these two varieties so as to make a plant with both the characteristics. Describe the procedure he would employ to ensure desired pollination, if the plants are: Bisexual Unisexual [5 marks]
Answer» A plant breeder has two varieties of plants, one that produces larger fruits and the other that produces more number of fruits. He wants to ensure desired pollination among the flowers of these two varieties so as to make a plant with both the characteristics. Describe the procedure he would employ to ensure desired pollination, if the plants are: Bisexual Unisexual [5 marks]

30.

A plant breeder has two varieties of plants, one that produces larger fruits and the other that produces more number of fruits. He wants to ensure desired pollination among the flowers of these two varieties so as to make a plant with both the characteristics. Describe the procedure he would employ to ensure desired pollination, if the plants are: Bisexual Unisexual [5 marks]

Answer»

A plant breeder has two varieties of plants, one that produces larger fruits and the other that produces more number of fruits. He wants to ensure desired pollination among the flowers of these two varieties so as to make a plant with both the characteristics. Describe the procedure he would employ to ensure desired pollination, if the plants are:

Bisexual
Unisexual

[5 marks]

Discussion

31.	The technique used to find out if a dominant phenotype is homozygous or heterozygous is called:
Answer» The technique used to find out if a dominant phenotype is homozygous or heterozygous is called:

Discussion

32.	Which among the following is a mismatch?
Answer» Which among the following is a mismatch?

Discussion

33.	White blood cels engulf bacteria in a process called: (a) diapedesis (b) phagocytosis (c) active transport (d) passive transport
Answer» White blood cels engulf bacteria in a process called: (a) diapedesis (b) phagocytosis (c) active transport (d) passive transport

33.

White blood cels engulf bacteria in a process called: (a) diapedesis (b) phagocytosis (c) active transport (d) passive transport

Answer»

White blood cels engulf bacteria in a process called:
(a) diapedesis

(b) phagocytosis

(c) active transport

(d) passive transport

Discussion

34.	Cardiac activity could be moderated by the autonomous neural system.Tick the correct answer:
Answer» Cardiac activity could be moderated by the autonomous neural system.Tick the correct answer:

Discussion

35.	Which among the following cells does HIV attack first?
Answer» Which among the following cells does HIV attack first?

Discussion

36.	The cells involved in inflammatory reactions are:
Answer» The cells involved in inflammatory reactions are:

Discussion

37.	Name all the haploid cells present in an unfertilized mature embryo sac of a flawering plant.write the Rotel no. Of cells in it
Answer» Name all the haploid cells present in an unfertilized mature embryo sac of a flawering plant.write the Rotel no. Of cells in it

Discussion

38.	High milk yielding crossbreed Frieswal cow is a product of
Answer» High milk yielding crossbreed Frieswal cow is a product of

Discussion

39.	Termination of gastrulation is indicated by
Answer» Termination of gastrulation is indicated by

Discussion

40.	Which of the following statements is correct about Enzymes?
Answer» Which of the following statements is correct about Enzymes?

Discussion

41.	What is the difference between annual and biennial plants
Answer» What is the difference between annual and biennial plants

Discussion

42.	Multiple fission is a mode of reproduction in
Answer» Multiple fission is a mode of reproduction in

Discussion

43.	Which one is correct statement about psycho drug.
Answer» Which one is correct statement about psycho drug.

Discussion

44.	Q19. Consider the following statements about NASA’s James Webb Space Telescope: 1. Polyethylene terephthalate (PET) is a type of plastic that is used widely in plastic bottles. 2. Ideonella sakaiensis is a type of bacteria that feeds on all types of plastics. Which of the above statements are correct?
Answer» Q19. Consider the following statements about NASA’s James Webb Space Telescope: 1. Polyethylene terephthalate (PET) is a type of plastic that is used widely in plastic bottles. 2. Ideonella sakaiensis is a type of bacteria that feeds on all types of plastics. Which of the above statements are correct?

44.

Q19. Consider the following statements about NASA’s James Webb Space Telescope: 1. Polyethylene terephthalate (PET) is a type of plastic that is used widely in plastic bottles. 2. Ideonella sakaiensis is a type of bacteria that feeds on all types of plastics. Which of the above statements are correct?

Answer»

Q19. Consider the following statements about NASA’s James Webb Space Telescope:

1. Polyethylene terephthalate (PET) is a type of plastic that is used widely in plastic bottles.

2. Ideonella sakaiensis is a type of bacteria that feeds on all types of plastics.

Which of the above statements are correct?

Discussion

45.	Explain the method of IUCM
Answer» Explain the method of IUCM

Discussion

46.	Citric acid can be produced from:
Answer» Citric acid can be produced from:

Discussion

47.	RCOOH→RCH2COOH.This reaction is called :
Answer» $R C O O H \to R C H_{2} C O O H$ .This reaction is called :

Discussion

48.	The dense matrix regular connective tissue which connects bone to bone is _____
Answer» The dense matrix regular connective tissue which connects bone to bone is _____

Discussion

49.	The activity of Certain protein is dependent on its phosphorylation. A mutation in its gene changed a single amino acid which affected the function of molecule. Which amino acid change is most likely to account for this observation?
Answer» The activity of Certain protein is dependent on its phosphorylation. A mutation in its gene changed a single amino acid which affected the function of molecule. Which amino acid change is most likely to account for this observation?

Discussion

50.	Insulin is [CBSE PMT 1991]
Answer» Insulin is [CBSE PMT 1991]

50.

Insulin is [CBSE PMT 1991]

Answer»

Insulin is

[CBSE PMT 1991]

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

Which of the phrases best helps to bring out the precise meaning of 'consciously strained'?

The wood of Gymnosperms is called softwood since it

(a) Select the homologous structures from the combinations given below: (i) Forelimbs of whales and bats (ii) Tuber of potato and sweet potato (iii) Eyes of octopus and mammals (iv) Thorns of Bougainvillea and tendrils of Cucurbita (b) State the kind of evolution they represent. [2]

AIDS is caused by HIV that principally infects

IUT is a very popular method of forming embryos in vivo. State whether true or false.If false give reason.

The branch of chemistry in which we study about carbon and its compound is known as:

First mammals occurred in which era period?

Which of the cells are phagocytic as well as scavengers?

___ is a form of ssexual reproduction that is similar to sexual reproduction.

Which of the following is a contraceptive?

Male and female gametophytes are independent and free-living in

Most abundant elements in the living cells are

Which of the following is a partial root parasite?

Consider the Assertion and the Reason, and choose the correct option. Assertion [A]: All muscles follow “all or none” principle. Reason [R]: If a stimulus is above a certain threshold, a nerve or muscle fiber will fire.

Match the following regarding transcription: p. Initiationi. Ribonucleotides arepolymerised according to the codeq. Elongationii. RNA polymerase binds to TATA boxr. Terminationiii. mRNA is bound by protective moleculess. Cappingiv. RNA polymerase detaches from DNA

‘Horse tail’ is:

Chemically insulin is a

Aspirin is obtained from:

Refer the given diagram. What does it represent?

The portion of the endometrium that covers the embryo and is located between the embryo and uterine cavity is the:

A tree which is completely girdled including the bark may survive for sometime, but will ultimately die because

Analyse the events during every stage of cell cycle and notice how the following two parameters change (i) Number of chromosomes (N) per cell (ii) Amount of DNA content (C) per cell

Offsprings formed due to sexual reproduction have better chances of survival. Why? Is this statement always true?

Which essential element plays an important role in the opening and closing of stomata?

(a) What is the term used to describe the process shown above? (b) What is the effect of DDT accumulation in birds? (c) Mention one metal which also undergoes the above phenomenon. [1+1+1]

Which among the following statements is false?

Hibernating animals have tissues containing mitochondira with a membrane protein that accelerates electron transport while blocking the synthesis of ATP. What is the consequence of this?

Draw a labelled diagram of a section through ovary.

The technique used to find out if a dominant phenotype is homozygous or heterozygous is called:

Which among the following is a mismatch?

White blood cels engulf bacteria in a process called: (a) diapedesis (b) phagocytosis (c) active transport (d) passive transport

Cardiac activity could be moderated by the autonomous neural system.Tick the correct answer:

Which among the following cells does HIV attack first?

The cells involved in inflammatory reactions are:

Name all the haploid cells present in an unfertilized mature embryo sac of a flawering plant.write the Rotel no. Of cells in it

High milk yielding crossbreed Frieswal cow is a product of

Termination of gastrulation is indicated by

Which of the following statements is correct about Enzymes?

What is the difference between annual and biennial plants

Multiple fission is a mode of reproduction in

Which one is correct statement about psycho drug.

Explain the method of IUCM

Citric acid can be produced from:

RCOOH→RCH2COOH.This reaction is called :

The dense matrix regular connective tissue which connects bone to bone is _____

The activity of Certain protein is dependent on its phosphorylation. A mutation in its gene changed a single amino acid which affected the function of molecule. Which amino acid change is most likely to account for this observation?

Insulin is [CBSE PMT 1991]