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प्रश्न
List the three stages the annuals and biennial angiosperms have to pass through during their life cycle.
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उत्तर
Vegetative, reproductive and senescent phases are the phases asociated with annual and biennial plants.
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संबंधित प्रश्न
In a flowering plant a microspore mother cell produces four male gametophytes, while a megaspore mother cell forms only one female gametophyte. Explain.
Read the statement and answer the questions that follow.
A flower of brinjal has 520 ovules in its ovary. However, it produces a fruit with only 480 viable seeds.
(a) What could have prevented the rest of the 40 ovules from maturing into viable seeds? Explain giving a reason.
(b) Describe the development of a dicot embryo in a viable seed.
(c) Why certain angiospermic seed albuminous while others are exalbuminous? Explain.
Name the terminal stage of ageing in the life cycle of plants.
Explain the different types of endosperms in angiosperms.
A typical flower has ______ different kinds of whorl.
Fragrant flowers with well developed nectaries are an adaptation for ______.
Pollen grains are well preserved as fossils because of the presence of ______
Verticillaster inflorescence is a characteristic feature of ______.
What is the similarity between gymnosperms and angiosperms?
Which of the following statement is incorrect?
In angiosperms, the site of sexual reproduction is ______.
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:
Axile placentation is observed in ______.
Which part of the flower is responsible for protecting the inner floral parts during the bud stage?
What is the floral envelope called when the calyx (sepals) and corolla (petals) cannot be differentiated from one another?
The swollen terminal part of the pedicel where all the floral whorls are arranged is known as __________.
Which of the following is considered an "essential whorl" of a flower?
What is the main function of the corolla?
