Let’s evaluate each statement to identify the incorrect ones:
| Statement | Evaluation | Correctness |
|---|---|---|
| I | The present era is called “Golden era of Biology” due to advancements in genetics and biotechnology. | ✅ Correct |
| II | Sexual system of classification was proposed by Theophrastus. This is incorrect; it was proposed by Carl Linnaeus. Theophrastus focused on early plant descriptions. | ❌ Incorrect |
| III | Study of Amphibians of plant kingdom (bryophytes) is called Bryology, as they need water for reproduction. | ✅ Correct |
| IV | Recycling of nutrients takes place by parasitic petrophants. This is incorrect; “petrophants” isn’t a real term. Decomposers like fungi recycle nutrients, not parasitic plants. | ❌ Incorrect |
Conclusion: Statements II and IV are incorrect.
Correct Answer: (4) II, IV
| List I | List II |
|---|---|
| A. Scutellum | II. Cotyledon of Monocot seed |
| B. Non-albuminous seed | IV. Rudimentary cotyledon |
| C. Epiblast | III. Groundnut |
| D. Perisperm | I. Persistent nucellus |
Match the following varieties with their pest/disease resistance:
| List I (Variety) | List II (Pest/Disease) | ||
|---|---|---|---|
| A | Pusa Gaurav | I | Nematodes |
| B | Pusa Sem 2 (Bean) | II | Stem and fruit borer |
| C | Pusa Sawani (Okra) | III | Jassids, aphids, fruit borer |
| D | Parbhani Kranti (Okra) | IV | Yellow Mosaic Virus |
Find the variance of the following frequency distribution:
| Class Interval | ||||
| 0--4 | 4--8 | 8--12 | 12--16 | |
| Frequency | 1 | 2 | 2 | 1 |