Which one of the following microbes forms a symbiotic association with plants and helps them in their nutrition?
1. Azotobacter
2. Aspergillus
3. Glomus
4. Trichoderma
The extinct human who lived 100000 to 40000 years ago, in Europe, Asia, and parts of Africa, with short stature, heavy eyebrows, retreating for heads, large jaws with heavy teeth, stocky bodies, a lumbering gait, and stooped posture was:
1. Homo habilis
2. Neanderthal human
3. Cro-Magnon humans
4. Ramapithecus
If one strand of DNA has the nitrogenous base sequence as ATCTG, what would be the complementary RNA strand sequence?
1. TTAGU
2. UAGAC
3. AACTG
4. ATCGU
Which one of the following pairs of hormones are the examples of those that can easily pass through the cell membrane of the target cell and bind to a receptor inside it (mostly in the nucleus)?
1. Insulin and glucagon
2. Thyroxin and insulin
3. Somatosatin and oxytocin
4. Cortisol and testosterone
Nuclear membrane is absent in:
1. Penicillium
2. Agaricus
3. Volvox
4. Nostoc
Which one is the most abundant protein in the animal world?
| 1. | Trypsin | 2. | Haemoglobin |
| 3. | Collagen | 4. | Insulin |
Which one of the following is common to multicellular fungi, filamentous algae and protonema of mosses?
1. Diplontic life cycle
2. Members of kingdom-Plantae
3. Mode of nutrition
4. Multiplication by fragmentation
Which one single organism or the pair of organisms is correctly assigned to its or their named taxonomic group?
| 1. | Paramecium and Plasmodium belong to the same kingdom as that of Penicillium |
| 2. | Lichen is a composite organism formed from the symbiotic association of algae and a protozoan |
| 3. | Yeast is used in making bread and brew is a fungus |
| 4. | Nostoc and Anabaena are examples of Protista |
Even in the absence of pollinating agents, seed-setting is assured in:
1. Commelina
2. Zostera
3. Salvia
4. Fig
Yeast is used in the production of:
1. Citric acid and lactic acid
2. Lipase and pectinase
3. Bread and beer
4. Cheese and butter