Question

(ii) The term perianth is used when (10990
শব্দটো ব্যৱহাৰ কৰা হয়, যেতিয়া) ঃ
(a) Corolla and Gynoecium are differentiated
(দলমণ্ডল আৰু স্ত্রী স্তৱক) পৃথক)
(b) Calyx and coroll a are not differentiated
(বৃতি আৰু দলমণ্ডল পৃথক নহয়)
(c) Calyx and coroll a are free (বৃতি আৰু
দলমণ্ডল মুক্ত)
(d) Calyx and coroll a are fused
(বতি আৰু দলমণ্ডল যুক্ত)​

Answer 1

The term perianth is used when?

-- (b) Callyx and corolla are not differentiated (বৃতি আৰু দলমণ্ডল পৃথক নহয়).

• The typical flower is consists of four whorls which are arranged on the swollen end of pedicle called as thallamus or receptacle.
• androceium and gynoceium are reproductive organs/whorls of flower.
• while callyx and corolla are the accessory whorls.
• Callyx being situated at the outermost and gynoceium as innermost being at the centre.
• when the members of callyx and corolla get fused and can't get differentiated as different whorls,that's will be recognized as a single specific whorl.
• Which are known as perianth. Members of perianth are known as tepals.
• Tepals are seen majorly in the liliaceae family members which include, onion,lily,tulip.

☆Above is the attached image of floral characteristics of onion(liliaceae family).

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