Ergot of rye is caused by a species of:

1. Phytophthora

2. Uncinula

3. Ustilago

4. Claviceps

Subtopic:  Kingdom Fungi: Ascomycetes |
AIPMT - 2007
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Geometric representation of age structure is a characteristic of:

1. Biotic community

2. Population

3. Landscape

4. Ecosystem

Subtopic:  Population Characters: Age Structure & Migration |
 81%
From NCERT
AIPMT - 2007
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Which one of the following mammalian cells is not capable of metabolizing glucose to carbon dioxide aerobically?

1. White blood cells

2. Unsatiated muscle cells

3. Liver cells

4. Red blood cells

Subtopic:  Blood: General Description & RBC: Part 1 | Blood: General Description & RBC: Part 2 | Blood: General Description & RBC |
 65%
AIPMT - 2007
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Feeling the tremors of an earthquake, a scared resident of the seventh floor of a multi-storey building starts climbing down the stairs rapidly. Which hormone initiated this act?

1. Thyroxine

2. Adrenaline

3. Glucagon

4. Gastrin

Subtopic:  Adrenal Medulla |
 95%
From NCERT
AIPMT - 2007
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Among the human ancestors the brain size was more than 1000 CC in:

1. Homo neaderthalensis

2. Homo erectus

3. Ramapithecus

4. Homo habilis

Subtopic:  Evolution Prior to Ape Man: 1 | Evolution Prior to Ape Man |
 82%
From NCERT
AIPMT - 2007
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The length of the DNA molecule greatly exceeds the dimensions of the nucleus in eukaryotic cells. How is this DNA accommodated?

1. Deletion of non-essential genes

2. Super-coiling in nucleosomes

3. DNAse digestion

4. Through the elimination of repetitive DNA

Subtopic:  DNA Double Helix | DNA Packaging |
 86%
From NCERT
AIPMT - 2007
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The wavelength of light absorbed by Pr form of phytochrome is:

1. 640 nm

2. 680 nm

3. 720 nm

4. 620 nm

Subtopic:  Photoperiodism (OLD NCERT) |
AIPMT - 2007
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Which part of the ovary in mammals acts as an endocrine gland after ovulation?

1. Graafian follicle
2. Stroma
3. Germinal epithelium
4. Vitelline membrane

Subtopic:  Menstrual Cycle: Pre Ovulatory Phase |
 85%
From NCERT
AIPMT - 2007
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Which one of the following is not a constituent of the cell membrane?

1. Cholesterol

2. Glycolipids

3. Proline

4. Phospholipids

Subtopic:  Cell Membrane |
 86%
From NCERT
AIPMT - 2007
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The concept of chemical evolution is based on:

1. crystallization of chemicals
2. interaction of water, air, and clay under intense heat
3. effect of solar radiation on chemicals
4. possible origin of life by a combination of chemicals
under suitable environmental conditions

Subtopic:  Origin of Life: Chemical Evolution: 1 | Origin of Life: Chemical Evolution: 2 | Origin of Life |
 89%
From NCERT
AIPMT - 2007
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