Which is the longest phase of the cell cycle from Biology NEET Y

Subject

Biology

Class

NEET Class 12

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 Multiple Choice QuestionsMultiple Choice Questions

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1.

Which is the longest phase of the cell cycle

  • M-phase

  • interphase

  • Leptotene

  • S-phase


B.

interphase

Cell cycle is divided into 2 phases.

(i) Interphase (a period of preparation for cell division)

(ii) M phase (the actual period of cell division).

The interphase cell is metabolically quite active. Interphase is the long nondividing phase further divided into G1, S and G2. It occupies 75 to 95% of entire cell division time.


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2.

Which of the given genera is homosporous

  • Cycas

  • Pinus

  • Selaginella

  • Lycopodium


3.

Which of the following are a group of micronutrients for plants

  • Fe, Mn, Cu, Mo, Zn

  • Fe, Mn, Cu, O, C

  • Cu, B, Cl, Fe, Ca

  • Ca, Mg, Fe


4.

Match Column- I with Column - 2 and choose the correct option from below.
Column - I Column - II
A. Marginal placentation (i) Sunflower
B. Axile placentation (ii) Mustard
C. Parietal placentation (iii) Lemon
D. Basal placentation (iv) Pea

  • A-(iv), B - (iii), C- (ii), D- (i)

  • A -(iv), B- (iii), C- (i), D - (ii)

  • A-(iv), B-(i), C- (ii), D - (iii)

  • A - (iii), B- (iv), C- (ii), D - (i)


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5.

Vernalisation is subjected to plants growing in

  • tropical areas

  • sub tropical areas

  • temperate areas

  • hot areas/arctic region.


6.

The phenomenon that operates in the formation of root or shoot in a callus culture is

  • differentiation

  • re-differentiation

  • de-differentiation

  • re-juvenation


7.

Which of the following genes do not occur naturally in living organisms

  • Bt genes

  • RNAi genes

  • Cry genes

  • Endogeneous cytoplasmic defence genes


8.

DNA and RNA comprise of

  • sugar, phosphate, base

  • sugar, phosphate

  • base, phosphate

  • sugar, base


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9.

Choose the correct pair

  • Coconut, cucurbits - dioecious

  • Honeybee, Rotifers - parthenogenesis

  • Ornithorhyncus, Whale - viviparity

  • Frog, Peacock - external fertilisation


10.

Select the incorrect statement.

  • Periplaneta has compound eyes.

  • Earthworm shows segmentation.

  • Ascaris shows sexual dimorphism.

  • Liver fluke has a complete alimentary canal


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