A gene showing co-dominance has?

1. One allele is dominant on the other 
2. Alleles are tightly linked on the same chromosome
3. Alleles that are recessive to each other
4. Both alleles are independently expressed in the heterozygote

Subtopic:  Dominance Deviation from Mendel: 1 |
 84%
From NCERT
NEET - 2015
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Which of the following structure is not found in a prokaryotic cell?

1. Nuclear envelope

2. Ribosome

3. Mesosome

4. Plasma membrane

Subtopic:  Prokaryotic Cell Organisation |
 86%
From NCERT
NEET - 2015
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The term "linkage" was coined by?

1. T.H. Morgan

2. T.Boveri

3. G.Mendel

4. W.Sutton

Subtopic:  Linkage |
 92%
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NEET - 2015
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The imperfect fungi which are decomposers of litter and help in mineral cycling belong to?

1. Deuteromycetes

2. Basidiomycetes

3. Phycomycetes

4. Ascomycetes

Subtopic:  Kingdom Fungi: Deuteromycetes |
 89%
From NCERT
NEET - 2015
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Match the columns and identify the correct option. 

Column I  Column II
A. Thylakoids (i) Disc-shaped sacs in Golgi apparatus
B. Cristae (ii) Condensed structure of DNA
C. Cisternae (iii) Flat membranous sacs in stroma
D. Chromatin (iv) Infolding in mitochondria

1. A → (iv) B → (iii) C → (i) D → (ii)

2. A → (iii) B → (iv) C → (i) D → (ii)

3. A → (iii) B → (i) C → (iv) D → (ii)

4. A → (iii) B → (iv) C → (ii) D → (i)

Subtopic:  Mitochondria | Golgi Apparatus | Nucleus: Chromosomes |
 82%
From NCERT
NEET - 2015
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Select the wrong statement:

1. The viroids were discovered by D.J lvanovsky.
2. W.M. Stanley showed that viruses could be crystallized.
3. The term 'contagium vivum fluidum' was coined by MW Beijerinck.
4. Mosaic disease in tobacco and AIDS in human beings are caused by viruses.

Subtopic:  Virus, Viroids & Prions |
 82%
From NCERT
NEET - 2015
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During biological nitrogen fixation, inactivation of nitrogenase by oxygen poisoning is prevented by?

1. Leghaemoglobin

2. Xanthophylls

3. Carotene

4. Cytochrome

Subtopic:  Nodule formation |
 94%
From NCERT
NEET - 2015
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The species confined to a particular region and not found elsewhere are termed as:

1. Keystone 2. Alien
3. Endemic 4. Rare
Subtopic:  In Situ Conservation of Biodiversity |
 85%
From NCERT
NEET - 2015
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Which one of the following hormones is not involved in sugar metabolism?

1. Cortisol

2. Aldosterone

3. Insulin

4. Glucagon

Subtopic:  Adrenal Cortex: Cortisol |
 75%
From NCERT
NEET - 2015
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Which of the following is not a function of the skeletal system?

1. Production of erythrocytes

2. Storage of minerals

3. Production of body heat

4. Locomotion

Subtopic:  Human Skeleton: Introduction, Function, Parts |
 71%
From NCERT
NEET - 2015
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