Biology
Given alongside is a figure of the vertical section of a typical bisexual flower. Study the same and answer the following questions :
- Label the guidelines 1 to 9.
- Which of the above labelled parts constitute the pistil? Write the numbers and names of those parts.
- Name the part which produces pollen grains.
- Is it a complete/incomplete flower ? Give reason in support of your answer.
- Write one important role of the part labelled as 6.
Flower
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Answer
The parts 1 to 9 given in the diagram are:
1 → Thalamus
2 → Sepal
3 → Filament
4 → Anther
5 → Petal
6 → Stigma
7 → Anther
8 → Style
9 → OvuleThe parts in the given figure that constitute the pistil are:
6 → Stigma,
8 → Style, and
9 → Ovules.The anther contains pollen sacs which produce a yellow, powdery material consisting of pollen grains.
The given figure shows a complete flower. This is because all four whorls viz. calyx, corolla, androecium and gynoecium are present in the same flower.
One important role of Stigma is that it receives the pollen grains during pollination.
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Related Questions
Give the difference in function between Filament and Style.
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- Label the guidelines 1, 2, 3 and 4.
- Write the collective name for the parts shown as 1, 2 and 3.
- Name the part of the flower which matures into part 4.
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