The fleshy receptacle of the syconus of fig encloses several:
1. achenes
2. samaras
3. berries
4. mericarps
Subtopic: Fruits & their Types |
59%
Level 3: 35%-60%
AIPMT - 2008
Hints
Which one of the following is linked to the discovery of Bordeaux mixture as a popular fungicide?
1. Bacterial leaf blight of rice
2. Downy mildew of grapes
3. Loose smut of wheat
4. Black rust of wheat
55%
Level 3: 35%-60%
AIPMT - 2008
Hints
Unisexuality of flowers prevents:
1. autogamy, but not geitonogamy
2. Both geitonogamy and xenogamy
3. geitonogamy, but not xenogamy
4. autogamy and geitonogamy
Subtopic: Pollination & Outbreeding Devices |
58%
Level 3: 35%-60%
AIPMT - 2008
Hints
Links
The length of different internodes in a culm of sugarcane is variable because of:
1. shoot apical meristem
2. position of axillary buds
3. size of leaf lamina at the node below each internode
4. intercalary meristem
64%
Level 2: 60%+
AIPMT - 2008
Hints
Which one of the following is the correct difference between rod cells and cone cells of our retina?
| Features | Rod cells | Cone cells | |
| (a) | Visual acuity | High | Low |
| (b) | Visual pigment contained | Iodopsin | Rhodopsin |
| (c) | Overall function | Vision in poor light | Colour vision and detailed vision in bright light |
| (d) | Distribution | More concentrated in centre of retina | Evenly distributed all over retina |
1. a
2. b
3. c
4. d
81%
Level 1: 80%+
AIPMT - 2008
Hints
In leaves of C4 plants, malic acid synthesis during CO2 fixation occurs in:
| 1. | epidermal cells | 2. | mesophyll cells |
| 3. | bundle sheath | 4. | guard cells |
Subtopic: C4 Cycle (Hatch & Slack Pathway) | C4 Plants Examples |
80%
Level 1: 80%+
AIPMT - 2008
Hints
Which one of the following pairs of codons is correctly matched with their function or the signal for the particular amino acid?
1. GUU, GCU - Alanine
2. UAG, UGA - Stop
3. AUG, ACG - Start/methionine
4. UUA, UCA -Leucine
Subtopic: Genetic Code: I | Genetic Code: II | Genetic Code |
86%
Level 1: 80%+
AIPMT - 2008
Hints
Cellulose is the major component of cell walls of:
| 1. | pythium | 2. | Xanthomonas |
| 3. | Pseudomonas | 4. | Saccharomyces |
Subtopic: Carbohydrates: Cellulose, Chitin, Inulin & Agar |
Level 3: 35%-60%
AIPMT - 2008
Hints
The slow rate of decomposition of fallen logs in nature is due to their:
1. low moisture content
2. poor nitrogen content
3. anaerobic environment around them
4. low cellulose content
Subtopic: Decomposition |
Level 3: 35%-60%
AIPMT - 2008
Hints
Carbohydrates are commonly found as starch in plant storage organs. Which of the following five properties of starch (A-E) make it useful as a storage material?
The useful properties are:
| (A) | Easily translocated |
| (B) | Chemically non-reactive |
| (C) | Easily digested by animals |
| (D) | Osmotically inactive |
| (E) | Synthesized during photosynthesis |
The useful properties are:
| 1. | (B) and (C) |
| 2. | (B) and (D) |
| 3. | (A), (C) and (E) |
| 4. | (A) and (E) |
Subtopic: Carbohydrates: Starch & Glycogen |
58%
Level 3: 35%-60%
AIPMT - 2008
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