DNA and RNA comprise of from Biology NEET Year 2014 Free Solved

Subject

Biology

Class

NEET Class 12

Test Series

Take Zigya Full and Sectional Test Series. Time it out for real assessment and get your results instantly.

Test Yourself

Practice and master your preparation for a specific topic or chapter. Check you scores at the end of the test.
Advertisement

 Multiple Choice QuestionsMultiple Choice Questions

1.

Which is the longest phase of the cell cycle

  • M-phase

  • interphase

  • Leptotene

  • S-phase


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)


Advertisement
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


Advertisement

8.

DNA and RNA comprise of

  • sugar, phosphate, base

  • sugar, phosphate

  • base, phosphate

  • sugar, base


A.

sugar, phosphate, base

DNA and RNA are nucleic acids which are found in living systems. DNA is a long polymer of deoxyribonucleotides and RNA is a long polymer of ribonucleotides. A nucleotide has 3 components- a nitrogenous base, a pentose sugar and a phosphate group.


Advertisement
Advertisement
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


Advertisement