Where is DNA Found in a Cell ? - Science

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Where is DNA found in a cell ?

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Solution

DNA is found in the nucleus of the cell.

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2014-2015 (March) All India Set 2

RELATED QUESTIONS

What do you mean by DNA?


Name the scientist who put forward the most popular model of DNA.


Draw a diagram of DNA showing genes.


What is DNA copying?


Explain the importance of reproduction in organisms.


Indicate whether the following statement is True (T) or False (F).
Egg laid after fertilization is made up of a single cell. ( )


Indicate whether the following statement is True (T) or False (F).

Amoeba reproduces by budding. ( )


Fill in the blanks:

Production of new individuals from the vegetative part of parent is called ________.


Describe the different methods of asexual reproduction. Give examples.


Match items in Column I with those in Column II:

Column I Column II
Bud Maple
Eyes Spirogyra
Fragmentation Yeast
Wings Bread mould
Spores Potato
  Rose

Tick (√ ) the correct answer:

A spore producing plant is


Find the odd one out:

Amoeba, Euglena, Planaria, Paramoecium

 


Which type of reproduction :
does not involve gametes?


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


What is a clone? Why do offsprings formed by asexual reproduction exhibit remarkable similarity?


 What is meant by reproduction?


The protozoan having a flagellum at its one end is :
(a) Amoeba
(b) Paramecium
(c) Hydra
(d) Leishmania


The offsprings formed by asexual reproduction method have greater similarity among themselves because :
(i) asexual reproduction involves only one parent
(ii) asexual reproduction involves two parents
(iii) asexual reproduction involves gametes
(iv) asexual reproduction does not involve gametes

(a) (i) and (ii)
(b) (i) and (iii)
(c) (ii) and (iv)
(d) (i) and (iv)The offsprings formed by asexual reproduction method have greater similarity among themselves because :
(i) asexual reproduction involves only one parent
(ii) asexual reproduction involves two parents
(iii) asexual reproduction involves gametes
(iv) asexual reproduction does not involve gametes

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


What type of fertilisation takes place in birds?


Imagine all the seeds produced by a plant happen to fall under the same plant and sprout into new plants. Mention any two problems that will be faced by the new plants.


State whether the following statement is true (T) or false (F):

Producing life is called respiration.


State whether the following statement is true (T) or false (F):

Dogs and cats reproduce from two parents.


State whether the following statement is true (T) or false (F):

Most organisms have the capacity of regeneration in some or the other way.


Find the odd-one out, giving reason.

Gamete, budding, fragmentation, regeneration.


Define the following:

Regeneration


Why is reproduction necessary for living organisms?


Differentiate between the following:

Asexual reproduction and sexual reproduction.


Tick (✓) the correct answer:
Bryophyllum can reproduce by its


The daughter cells produced by asexual reproduction are genetically identical to the parent cell.


Match the following:

Column ‘I’ Column ‘II’
(1) Inhibits plant growth
(a) Breaks large fat globules into smaller ones
(2) Cytokinins
(b) Auxins
(3) Cellular respiration
(c) Mitochondria
(4) Bile
(d) Promote cell division
 
(e) Abscisic acid

What do you mean by ‘Connecting Links’? Give one example.


Explain the term Reproduction.


Explain the term: Pollination. 


By which process do green plants synthesize their food?


Name the factors which take part in this process.


Multiple choice question.

Insect pollinated flowers usually posses ______


Multiple choice question.

In ovule, meiosis occurs in ______


If diploid chromosome number in a flowering plant is 12, then which one of the following will have 6 chromosomes?


Sporoderm is made up of ______.


The number of meiotic and mitotic divisions necessary for development of female gametophyte in angiosperms is ______.


Identify the odd one with respect to pollinating agent.


In vitro pollen germination and pollen tube elongation can be induced by ______.


Self-incompatibility is found in flowers of plants _______.


Draw a well labelled diagram of T.S. anther.


Draw a well labelled diagram of the monocot seed you have studied.


Reproductive part of a plant is ______.


Write two types of reproduction in plants.


The plant which propagates with the help of its leaves is ______.


Planaria reproduces asexually by ______.


Match the following.

Column I Column II
Fission Spirogyra
Budding Amoeba
Fragmentation Yeast

What will happen if you cut planaria into small fragments?


Why is vegetative propagation practiced for growing some type of plant?


Name two organisms that reproduce through budding.


Which of the following is diploid at the time of fertilization in a gametophyte of a normal angiosperm?


Identify the chromosome number of the endosperm in the following case. In an angiosperm a female plant having 2n = 24 is crossed with a male plant having 2n = 12.


Assertion and Reason types of Question.

Assertion: In potatoes, shoot arises from eyes.
Reason: Eyes represent the buds.


Assertion and Reason types of Question.

Assertion: In Banyan prop roots grow horizontally from the tree.
Reason: They give additional support to the tree.


Assertion and Reason types of Question.

Assertion: Corm is a condensed form of Bulb.
Reason: It has dry and fleshy scale leaves.


Which of the following nucleus is unlike other nuclei in the female gametophyte of angiosperms?


Give reason for the following:

All multicellular organisms cannot give rise to new individuals through fragmentation or regeneration.


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