Which one of the following is not a part of a renal pyramid?

1.  Convoluted tubules

2.  Collecting ducts

3.  Loops Henle

4.  Peritubular capillaries

Subtopic:  Human Kidney: Location & Cut Section |
Level 3: 35%-60%
AIPMT - 2011
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‘Himgiri’ developed by hybridization and selection for disease resistance against rust pathogens is a variety of:
1. maize
2. sugarcane
3. wheat
4. chilli
 89%
Level 1: 80%+
AIPMT - 2011
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Which one of the following groups of animals is correctly matched with its one characteristic feature without even a single exception?
 
1. Chordata – possess a mouth provided with an upper and a lower jaw
2. Chondrichthyes – possess cartilaginous endoskeleton
3. Mammalia – give birth to young ones
4. Reptilia – possesses 3-incomplete heart with one incompletely divided ventricle.

Subtopic:  Comparative study of Cartilagenous & Bony Fishes | Class Chondrichthyes |
 79%
Level 2: 60%+
AIPMT - 2011
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Which one of the following acts as a physiological barrier to the entry of microorganisms in a human body?

1.  Tears

2.  Monocytes

3.  Skin

4.  Epithelium of urogenital tract

Subtopic:  Details of Immunity |
 81%
Level 1: 80%+
AIPMT - 2011
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When a neuron is in resting state i.e., not conducting any impulse, the axonal membrane is:
1. equally permeable to both Na+ and K+ ions
2. impermeable to both Na+ and K+ ions
3. comparatively more permeable to K+ ions and nearly impermeable to Na+ ions
4. comparatively more permeable to Na+ ions and nearly impermeable to K+ ions

Subtopic:  Origin of Resting Membrane Potential |
 84%
Level 1: 80%+
AIPMT - 2011
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Nucellar polyembryony is reported in species of:

1.  Gossypium

2.  Triticum

3.  Brassia

4.  Citrus

Subtopic:  Apomixis & Polyembryony |
 87%
Level 1: 80%+
AIPMT - 2011
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Peptide synthesis inside a cell takes place in:
1. mitochondria 2. chromoplast
3. ribosomes 4. chloroplast
Subtopic:  Ribosome and Inclusion Bodies |
 83%
Level 1: 80%+
AIPMT - 2011
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When two unrelated individuals or lines crossed, the performance of F1 hybrid is of superior to both its parents. This phenomenon is called:

1.  transformation

2.  splicing

3.  metamorphosis

4.  heterosis

 71%
Level 2: 60%+
AIPMT - 2011
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The cork cambium, cork and secondary cortex are collectively called:
1.  phellogen
2.  periderm
3.  phellem
4.  phelloderm
Subtopic:  Activity of Cork Cambium |
 72%
Level 2: 60%+
AIPMT - 2011
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The curve given below shows enzymatic activity with relation to three conditions (pH, temperature and substrate concentration) what do the two axis (X and Y) represent? 

        
   

X-axis

Y-axis

(a)

Temperature

Enzyme activity

(b)

Substrate concentration

Enzyme activity

(c)

Enzyme activity

Temperature

(d)

Enzyme activity

pH

1.  (a)
2.  (b)
3.  (c)
4.  (d)

Subtopic:  Properties of Enzymes |
 71%
Level 2: 60%+
AIPMT - 2011
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