(a) Give the reproductive unit in angiosperms. (b) What is perianth? Give two examples. (c) Differentiate between radial and bilateral symmetry.
GeneralClass 12AllAnswered 27 Mar 2026
Answer
Solution:
(a) The reproductive unit in angiosperms is the flower.
(b)Perianth: When calyx and corolla are not distinguishable, the undifferentiated structure is called perianth. Individual members are tepals.
Examples: Lily, tulip (Liliaceae)
(c) Differentiation:
|
Radial (Actinomorphic) |
Bilateral (Zygomorphic) |
|
Divisible into equal halves by any vertical plane |
Divisible into equal halves by only one vertical plane |
|
Regular flower |
Irregular flower |
|
Example: Mustard, datura, china rose |
Example: Pea, Cassia, gulmohar |
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