With reference to factors affecting the rate of photosynthesis, which of the following statements is not correct?

1.  Increasing atmospheric CO2 concentration up to 0.05% can enhance the CO2 fixation rate
2. C3 plants respond to higher temperatures with enhanced photosynthesis while C4 plants have much lower temperature optimum
3.  Tomato is a greenhouse crop that can be grown in CO2 enriched atmosphere for higher yield
4.  Light saturation for CO2 fixation occurs at 10% of full sunlight

Subtopic:  Factors Affecting Photosynthesis |
 79%
From NCERT
NEET - 2017
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DNA fragments are:

1. Negatively charged

2. Neutral

3. Either positively charged depending on their size

4. Positively charged

Subtopic:  Separation and Isolation of DNA fragments |
 93%
From NCERT
NEET - 2017
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Links
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Which of the following components provides sticky character to the bacterial cell?

1. Nuclear membrane

2. Plasma membrane

3. Glycocalyx

4. Cell Wall

Subtopic:  Details of Prokaryotic Cell Structure |
 88%
From NCERT
NEET - 2017
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Which of the following options best represents the enzyme composition of pancreatic juice?

1. Amylase, pepsin, trypsinogen, maltase

2. Peptidase, amylase, pepsin, rennin

3. Lipase, amylase, trypsinogen, pro carboxypeptidase

4. Amylase, peptidase, trypsinogen, rennin

Subtopic:  Pancreatic Secretions |  DIGESTION OF FOOD |
 84%
From NCERT
NEET - 2017
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Which among these is the correct combination of aquatic mammals?

1. Dolphin, Seals, Trygon

2. Whales, Dolphin, Seals

3. Trygon, Whales, Seals

4. Seals, Dolphin, Sharks

Subtopic:  Study of Aves & Mammals |
 80%
From NCERT
NEET - 2017
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Fruit and leaf drop at early stages can be prevented by the application of:

1. Ethylene

2. Auxins

3. Gibberellic acid

4. Cytokinins

Subtopic:  Auxin Function |
 69%
From NCERT
NEET - 2017
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Select the correct route for the passage of sperms in male frogs:

1. Testes → Vasa efferentia → Kidney → Seminal Vesicle → Urinogenital duct → Cloaca
2. Testes → Vasa efferentia → Bidder's canal → Uretar → Cloaca
3. Testes → Vasa efferentia → Kidney → Bidder's canal → Urinogenital duct → Cloaca
4. Testes → Bidder's canal→ Kidney→ Vasa efferentia → Urinogenital duct→ Cloaca

Subtopic:  Frogs: Anatomy (Excretory System) | Frogs: Anatomy (Male Reproductive System) |
 60%
From NCERT
NEET - 2017
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In case of a couple where the male is having a very low sperm count, which technique will be suitable for fertilization?

1. Gamete intracytoplasmic fallopian transfer
2. Artificial insemination
3. Intracytoplasmic sperm injection
4. Intrauterine transfer
Subtopic:  Infertility: 1 | Infertility |
 75%
From NCERT
NEET - 2017
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Which ecosystem has the maximum biomass?

1. Grassland ecosystem

2. Pond ecosystem

3. Lake ecosystem

4. Forest ecosystem

Subtopic:  Ecosystem Productivity |
 70%
NEET - 2017
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Lungs are made up of air-filled sacs, the alveoli. They do not collapse even after forceful expiration, because of:

1. Inspiratory Reserve Volume

2. Tidal Volume

3. Expiratory Reserve Volume

4. Residual Volume

Subtopic:  Respiratory System: Pulmonary Volumes & Capacities |
 86%
From NCERT
NEET - 2017
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