Floridean starch has structure similar to:
| 1. | Amylopectin and glycogen |
| 2. | Mannitol and algin |
| 3. | Laminarin and cellulose |
| 4. | Starch and cellulose |
Which one of the following is the most abundant protein in the animals?
| 1. | Collagen | 2. | Lectin |
| 3. | Insulin | 4. | Hemoglobin |
Some dividing cells exit the cell cycle and enter the vegetative inactive stage. This is called the quiescent stage G0. This process occurs at the end of:
| 1. | G1 phase | 2. | S phase |
| 3. | G2 phase | 4. | M phase |
Identify the correct statement with regard to phase (Gap 1) of interphase.
| 1. | The reorganisation of all cell components takes place. |
| 2. | The cell is metabolically active, grows but does not replicate its DNA |
| 3. | Nuclear division takes place |
| 4. | DNA synthesis or replication takes place. |
Dissolution of the synaptonemal complex occurs during :
| 1. | Zygote | 2. | Diplotene |
| 3. | Leptotene | 4. | Pachytene |
Match the following with respect to meiosis:
| (a) | Zygotene | (i) | Terminalization |
| (b) | Pachytene | (ii) | Chiasmata |
| (c) | Diplotene | (iii) | Crossing over |
| (d) | Diakinesis | (iv) | Synapsis |
Select the correct option from the following:
| (a) | (b) | (c) | (d) | |
| 1. | (iv) | (iii) | (ii) | (i) |
| 2. | (i) | (ii) | (iv) | (iii) |
| 3. | (ii) | (iv) | (iii) | (i) |
| 4. | (iii) | (iv) | (i) | (ii) |
The process responsible for facilitating loss of water in liquid form from the tip of grass blades at night and early morning is:
1. Root pressure
2. Imbibition
3. Plasmolysis
4. Transpiration
The product(s) of the reaction catalyzed by nitrogenase in root nodules of leguminous plants is/are.
1. Nitrate alone
2. Ammonia and oxygen
3. Ammonia and hydrogen
4. Ammonia alone
Match the following concerning essential elements and their functions in plants :
| (a) | Iron | (i) | Photolysis of water |
| (b) | Zinc | (ii) | Pollen germination |
| (c) | Boron | (iii) | Required for chlorophyll biosynthesis |
| (d) | Manganese | (iv) | IAA biosynthesis |
Select the correct option:
| (a) | (b) | (c) | (d) | |
| 1. | (iv) | (iii) | (ii) | (i) |
| 2. | (iii) | (iv) | (ii) | (i) |
| 3. | (iv) | (i) | (ii) | (iii) |
| 4. | (ii) | (i) | (iv) | (iii) |
In light reaction, plastoquinone facilitates the transfer of electrons from:
| 1. | Cyt b6f complex to PS-I |
| 2. | PS-I to NADP+ |
| 3. | PS-I to ATP synthase |
| 4. | PS-II to Cytb6f complex |
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