Given below is the diagrammatic sketch of a certain type of connective tissue. Identify the parts labeled A, B, C, and D and select the right option for them:
| Part-A | Part-B | Part-C | Part-D | |
| 1. | Mast cell | Macrophage | Fibroblast | Collagen fibres |
| 2. | Macrophage | Collagen fibres | Fibroblast | Mast cell |
| 3. | Mast cell | Collagen fibres | Fibroblast | Macrophage |
| 4. | Macrophage | Fibroblast | Collagen fibres | Mast cell |
In the five-kingdom classification, Chlamydomonas and Chlorella have been included in:
| 1. | Algae | 2. | Plantae |
| 3. | Monera | 4. | Protista |
Read the following four statements (I-IV):
| I. | Both, photophosphorylation and oxidative phosphorylation involve uphill transport of protons across the membrane |
| II. | In dicot stems, a new cambium originates from cells of pericycle at the time of secondary growth |
| III. | Stamens in flowers of Gloriosa and Petunia are polyandrous |
| IV. | Symbiotic nitrogen-fixers occur in a free-living state and also in soil |
How many of the above statements are right?
1. Three
2. Four
3. One
4. Two
Domestic sewage in large cities:
| 1. | is processed by aerobic and then anaerobic bacteria in the secondary treatment in Sewage Treatment Plant (STPs) |
| 2. | when treated in STPs, does not require the aeration step as the sewage contains adequate oxygen |
| 3. | has very high amounts of suspended solids and dissolved salts |
| 4. | has a high BOD as it contains both aerobic and anaerobic bacteria |
| 1. | Salvinia - Prothallus | 2. | Viroids – RNA |
| 3. | Mustard-Synergids | 4. | Ginkgo-Archegonia |
What is it that forms the basis of DNA Fingerprinting?
| 1. | The relative difference in the DNA occurrence in blood, skin and saliva |
| 2. | The relative amount of DNA in the ridges and grooves of the fingerprints |
| 3. | Satellite DNA occurs as highly repeated short DNA segments |
| 4. | The relative proportions of purines and pyrimidines in DNA |
Which one of the following characteristics is common in both humans and adult frogs?
1. Internal fertilization
2. Nucleated RBCs
3. Ureotelic mode of excretion
4. Four-chambered heart
Represented below is the inheritance pattern of a certain type of traits in humans. Which one of the following conditions could be an example of this pattern?
| 1. | Sickle cell anemia | 2. | Haemophilia |  |
| 3. | Thalassemia | 4. | Phenylketonuria |
The four sketches (A, B, C, and D) given below, represent four different types of animal tissues. Which one of these is correctly identified in the options given, along with its correct location and function?
| Tissue | Location | Function | ||
| 1. | (C) | Collagen fibres | Cartilage | Attach skeletal muscles to bones |
| 2. | (D) | Smooth muscle tissue | Heart | Heart contraction |
| 3. | (A) | Columnar epithelium | Nephron | Secretion and absorption |
| 4. | (B) | Glandular epithelium | Intestine | Secretion |
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