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प्रश्न
A capsicum flower has 240 ovules in its ovary. But, it produces a fruit with only 180 viable seeds.
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उत्तर
Ovules develop into viable seeds which are capable of germination under suitable environmental conditions. Viability is influenced by various conditions like humidity, temperature, and availability of oxygen. Viability can be lost due to:
(2) damage to the embryo
(3) denaturation of enzymes
(4) extremely high temperatures
(5) excessively dry weather
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संबंधित प्रश्न
List the three stages the annuals and biennial angiosperms have to pass through during their life cycle.
Give an example of an angiosperm seed that has a perisperm. Name the part the perisperm develops from.
Explain the different types of endosperms in angiosperms.
Science of cultivation, breeding, marketing and arrangement of flowers is called ______.
Fragrant flowers with well developed nectaries are an adaptation for ______.
The flower is the site of ______.
Verticillaster inflorescence is a characteristic feature of ______.
Place the following groups of plants in order, beginning with those that first appeared on the earth and progressing toward those that appeared most recently in time.
Match List I with List II:
| List I (Types of Stamens) |
List II (Example) |
||
| A. | Monoadelphous | I. | Citrus |
| B. | Diadelphous | II. | Pea |
| C. | Polyadelphous | III. | Lily |
| D. | Epiphyllous | IV. | China-rose |
Choose the correct answer from the options given below:
What is the floral envelope called when the calyx (sepals) and corolla (petals) cannot be differentiated from one another?
