Biology
Given alongside are two figures (A & B) of a certain part of a flower. Study the figures carefully and answer the following questions:
(a) Which major organ of a flower does the figure A represent? What is the collective term for this organ?
(b) Are the contents of the pollen sacs in B, male or female?
(c) Can you state how the contents of the pollen sacs would come out?
Flower
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Answer
(a) Figure A represents stamen. Stamens collectively form Androecium.
(b) Contents of the pollen sacs in B, are male gametes.
(c) The contents of the pollen sacs would come out through agents like air, wind, insects leading to pollination in flowers.
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Draw either an entire flower or a part of it showing the following conditions :
(a) Polysepalous calyx
(b) Gamosepalous calyx
(c) Polypetalous corolla
(d) Gamopetalous corolla
(e) Bracteate flower
The figures (A, B, C and D) give below represent different kind of androecium. Name the kind of androecium (A, B, C and D) and give one example of a flower having each.
Draw a neat diagram of male (♂) and female (♀) reproductive organs of a flower.
(a) Label two important parts of the male reproductive organ.
(b) Label four important parts of the female reproductive organ.
(c) Write the collective name/whorl of each reproductive organ.
(d) Name the unicellular, sexual structures produced in each.
(e) Name the parts of the female reproductive organ that develop into a fruit and seed respectively.
The figure given alongside represents generalised arrangement of the different parts of a bisexual flower. Name the parts numbered 1-10.
