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Recent questions tagged sec-a
Questions
“Human population grows in geometric ratio while food materials increase in arithmetic proportion”. It is a statement from
cbse
class12
biology
zoology
neet
sec-a
asked
Jan 25, 2017
by
priyanka.c
1
answer
Pythons possess tiny leg bones that serve no purpose in locomotion such organs are
cbse
class12
biology
zoology
neet
sec-a
asked
Jan 25, 2017
by
priyanka.c
1
answer
The two critical steps in evolution of human were
cbse
class12
biology
zoology
neet
sec-a
asked
Jan 25, 2017
by
priyanka.c
0
answers
Cu ions released from Copper releasing intra uterine device
cbse
class12
biology
zoology
neet
sec-a
asked
Jan 25, 2017
by
priyanka.c
0
answers
Spermiation is the process of release of sperms from
cbse
class12
biology
zoology
neet
sec-a
asked
Jan 25, 2017
by
priyanka.c
0
answers
Assertion: A drop in temperature does not affect spermatogenesis
Reason: During temperature drops, the smooth muscles contract and brings testes closer to the pelvic cavity
cbse
class12
biology
zoology
neet
sec-a
asked
Jan 25, 2017
by
priyanka.c
0
answers
The accompanying diagram shows the changes that take place in the endometrium during a normal menstrual cycle. Identify the changes and select the correct option?
cbse
class12
biology
zoology
neet
sec-a
asked
Jan 25, 2017
by
priyanka.c
0
answers
Lipids are insoluble in water because lipid molecules are
cbse
class12
biology
zoology
neet
sec-a
asked
Jan 25, 2017
by
priyanka.c
0
answers
Match the terms in column I with suitable terms in column II
cbse
class12
biology
zoology
neet
sec-a
asked
Jan 25, 2017
by
priyanka.c
0
answers
The given figure shows the main endocrine glands in human body.
Identify A to G and select the correct option
cbse
class12
biology
zoology
neet
sec-a
asked
Jan 25, 2017
by
priyanka.c
0
answers
Given figure represents different ones of a lake or a pondIdentify the labelled parts X,Y and Z and select the correct statement
cbse
class12
biology
botany
neet
sec-a
asked
Jan 25, 2017
by
suganyadevi.p
1
answer
The enzymes needed to obtain protoplast from a plant cell are
cbse
class12
biology
botany
neet
sec-a
asked
Jan 25, 2017
by
suganyadevi.p
1
answer
Which of the following statement is incorrect regarding the nectaries cotton varieties?
cbse
class12
biology
botany
neet
sec-a
asked
Jan 25, 2017
by
suganyadevi.p
1
answer
Molecular basis of organ differentiation depends on the modulation in transcription by
cbse
class12
biology
botany
neet
sec-a
asked
Jan 25, 2017
by
suganyadevi.p
1
answer
Other than DNA polymerase, which are the enzymes involved in DNA synthesis?
cbse
class12
biology
botany
neet
sec-a
asked
Jan 25, 2017
by
suganyadevi.p
1
answer
UTRs are untranslated regions present on
cbse
class12
biology
botany
neet
sec-a
asked
Jan 25, 2017
by
suganyadevi.p
1
answer
Grain colour in wheat is determined by three pairs of polygenic. Following the cross AABBCC (dark colour) x aabbcc (light colour), in F1 generation, what of offspring proportion is likely to resemble either parent?
cbse
class12
biology
botany
neet
sec-a
asked
Jan 25, 2017
by
suganyadevi.p
2
answers
A color blind man (xcY) marries a woman who is a carrier for haemophilia (Xxh) . which of the following is true for their progenies?
cbse
class12
biology
botany
neet
sec-a
asked
Jan 25, 2017
by
suganyadevi.p
1
answer
Assertion: In plants, apomixis is a form of asexual reproduction that mimics sexual reproduction
Reason: Apomixis involves the production of seeds without the function of gametes
cbse
class12
biology
botany
neet
sec-a
asked
Jan 25, 2017
by
suganyadevi.p
1
answer
Which of the following events take place after fertilization?
cbse
class12
biology
botany
neet
sec-a
asked
Jan 25, 2017
by
suganyadevi.p
1
answer
Interspecific incompatibility is overcome by
cbse
class12
biology
botany
neet
sec-a
asked
Jan 25, 2017
by
suganyadevi.p
1
answer
Assertion: Cucurbita is a monoecious plant.
Reason: In cucurbits, both male and female flowers are present on the same plant
cbse
class12
biology
botany
neet
sec-a
asked
Jan 25, 2017
by
suganyadevi.p
1
answer
The given figure shows the demonstration of osmosis by egg membrane osmoscope.
After a few days , which one of the following would have occurred?
cbse
class12
biology
botany
neet
sec-a
asked
Jan 25, 2017
by
suganyadevi.p
1
answer
Intrinsic heterophylly is found in all except
cbse
class12
biology
botany
neet
sec-a
asked
Jan 25, 2017
by
suganyadevi.p
2
answers
A cell membrane shows fluid behaviour.
Reason: A membrane is a mosaic or composite of lipids and proteins
cbse
class12
biology
botany
neet
sec-a
asked
Jan 25, 2017
by
suganyadevi.p
0
answers
The Cri du chat syndrome is caused due to the change in the chromosome structure involving
cbse
class12
biology
botany
neet
sec-a
asked
Jan 25, 2017
by
meena.p
0
answers
The given figure shows responses of three plants A,B and C to the photoperiod. Select the correct option regarding this.
cbse
class12
biology
botany
neet
sec-a
asked
Jan 25, 2017
by
suganyadevi.p
1
answer
Assertion: During embryo development in dicots, suspensor serves as the main nutritive tissue for the embryo <br> Reason: The last cell of the suspensor at the end adjacent to the embryo is known as haustorium.
cbse
class12
biology
botany
neet
sec-a
asked
Jan 25, 2017
by
meena.p
0
answers
Double fertilization was discovered in 1898 by ______ in Fritellaria and Lilium
cbse
class12
biology
botany
neet
sec-a
asked
Jan 25, 2017
by
meena.p
0
answers
During photorespiration, the oxygen consuming reactions occur in
cbse
class12
biology
botany
neet
sec-a
asked
Jan 25, 2017
by
suganyadevi.p
1
answer
Effect of pollen on character of pericarp and seed coat is
cbse
class12
biology
botany
neet
sec-a
asked
Jan 25, 2017
by
meena.p
1
answer
Assertion: Asexual reproduction involves formation of clone of an organism <br> Reason: Clones are morphologically and genetically similar individuals.
cbse
class12
biology
botany
neet
sec-a
asked
Jan 25, 2017
by
meena.p
1
answer
Given graph represents the absorption spectra of three photosynthetic pigments-chl-a, chl-b and β-carotene
Select the correct statement regarding this
cbse
class12
biology
botany
neet
sec-a
asked
Jan 25, 2017
by
suganyadevi.p
1
answer
In which one pair, both the plants can be propagated vegetatively through leaf pieces?
cbse
class12
biology
botany
neet
sec-a
asked
Jan 25, 2017
by
meena.p
0
answers
Prolonged liberal irrigation of agricultural fields is likely to create the problem of
cbse
class12
biology
botany
neet
sec-a
asked
Jan 25, 2017
by
meena.p
0
answers
Who confirmed that $O_2$ comes from water during photosynthesis?
cbse
class12
biology
botany
neet
sec-a
asked
Jan 25, 2017
by
suganyadevi.p
2
answers
Assertion: Auxins help to prevent fruits and leaves drop at early stages. <br> Reason: Auxins promote the abscission of older and mature leaves.
cbse
class12
biology
botany
neet
sec-a
asked
Jan 25, 2017
by
meena.p
0
answers
Assertion: Cymose inflorescence has limited growth <br> Reason: In Cymose inflorescence , the main axis terminates in a flower.
cbse
class12
biology
botany
neet
sec-a
asked
Jan 25, 2017
by
meena.p
0
answers
Read the following statements regarding Arithmetic growth and select the correct answers. <br> i.Rate of growth is constant <br> ii.One daughter cell remains meristamatic while the other one differentiates and matures <br> iii. Mathematical expression is $= L_t= L_0+\pi$
cbse
class12
biology
botany
neet
sec-a
asked
Jan 25, 2017
by
meena.p
0
answers
Identify the labels X and Y in the given outline of Nitrogen cycle . select the correct option
cbse
class12
biology
botany
neet
sec-a
asked
Jan 25, 2017
by
suganyadevi.p
1
answer
Assertion: A plant shrinks in hypertonic solution
Reason: In hypertonic solution, water moves out of cell due to plasmolysis.
cbse
class12
biology
botany
neet
sec-a
asked
Jan 25, 2017
by
suganyadevi.p
1
answer
Assertion: Reduction division occurs in Anaphase I
Reason: Meiosis II occurs to separate homologus chromosomes
cbse
class12
biology
botany
neet
sec-a
asked
Jan 25, 2017
by
suganyadevi.p
2
answers
Middle lamellae is mostly composed of
cbse
class12
biology
botany
neet
sec-a
asked
Jan 25, 2017
by
suganyadevi.p
1
answer
Mechanical support, enzyme circulation,protein synthesis and detoxification of drugs are functions of:
cbse
class12
biology
botany
neet
sec-a
asked
Jan 25, 2017
by
suganyadevi.p
2
answers
Which of the following is not true of a eukaryotic cell?
cbse
class12
biology
botany
neet
sec-a
asked
Jan 25, 2017
by
suganyadevi.p
1
answer
Assertion: The quiescent centre acts as a reservoir of relatively resistant cells that constitute a permanent source of active initials.
Reason: The cells of the inactive quiescent centre become more active when the previous active initials get damaged
cbse
class12
biology
botany
neet
sec-a
asked
Jan 25, 2017
by
suganyadevi.p
1
answer
A piece of wood having no vessels (trachea) must belong to
cbse
class12
biology
botany
neet
sec-a
asked
Jan 25, 2017
by
suganyadevi.p
1
answer
Assertion: In some flowers like lily, perianth is a term used when calyx and corolla are not distinct.
Reason: Calyx and corolla are reproductive organs
cbse
class12
biology
botany
neet
sec-a
asked
Jan 25, 2017
by
suganyadevi.p
1
answer
Select the incorrect statement out of the following:
cbse
class12
biology
botany
neet
sec-a
asked
Jan 25, 2017
by
suganyadevi.p
2
answers
Gymnosperms are also called soft wood spermatophytes because they lack
cbse
class12
biology
botany
neet
sec-a
asked
Jan 25, 2017
by
suganyadevi.p
2
answers
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