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प्रश्न
Given below are the features of Seed A and Seed B. Study them carefully and answer the question that follows.
| SEED A | Papery endosperm, swollen cotyledon, perisperm develops from nucellus, suspensor, haustoria substitute endosperm. |
| SEED B | Swollen endosperm, papery cotyledons or absent, perisperm does not develop from nucellus, suspensor and haustoria do not substitute endosperm. |
Identify the type of Seed A and Seed B. Cite one example of each of Seed A and Seed B.
उत्तर
- Seed A - Non-endospermic Exalbuminous,
Examples - Pea, bean, Cucurbita - Seed B - Endospermic or Albuminous
Examples - Castor, maize.
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संबंधित प्रश्न
Mention any 'two' ecological services forthe benefit of mankind
Discuss the role of healthy ecosystem services as a pre-requisite for a wide range of economic, environmental and aesthetic goods and services
Which of the following enzymes helps in fixing CO2 into malic acid in sorghum plant?
Seed dispersal in squirting cucumber occurs via ______.
Which of the following condition favours the dissociation of oxyhaemoglobin into oxygen and deoxyhaemoglobin?
Which of the following is NOT included in ecosystem services?
Ecosystem is not accepted by which law of thermodynamics?
Classify the following to form Column B as per the category given in Column A:
(Nature trails, Pollination, Sea food, Carbon sequestration, Animal therapy, Pest control, Health care, Nutrient cycling.)
| Column A | ColumnB | |
| (1) | Supporting services | ______ |
| (2) | Provisioning services | ______ |
| (3) | Regulating services | ______ |
| (4) | Cultural services | ______ |
Primary production is expressed in terms of ______.
Based on the table given below, identify the type of natural selection taking place.
| Size of the seeds | % of germination |
| Small | 75% |
| Medium | 15% |
| Large | 75% |
