The final proof for DNA as the genetic material came from the experiments of:
1. Hershey and chase
2. Avery, McLeod and McCarty
3. Har Gobind Khorana
4. Griffith
Among the following characters, which one was not considered by Mendel in his experiments on pea?
1. Trichomes-Gladular or non-gladular
2. Seed-green or yellow
3. Pod-inflated or constricted
4. Stem-Tall or Dwarf
Plants which produce characteristic pneumatophores and show vivipary belong to:
1. Halophytes
2. Psammophytes
3. Hydrophytes
4. Mesophytes
The pivot joint between atlas and axis is a type of:
1. Cartilaginous joint
2. Synovial joint
3. Saddle joint
4. Fibrous joint
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 |
DNA fragments are:
1. Negatively charged
2. Neutral
3. Either positively charged depending on their size
4. Positively charged
Which of the following components provides sticky character to the bacterial cell?
1. Nuclear membrane
2. Plasma membrane
3. Glycocalyx
4. Cell Wall
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
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
Fruit and leaf drop at early stages can be prevented by the application of:
1. Ethylene
2. Auxins
3. Gibberellic acid
4. Cytokinins
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