\n(4) Perigynous "}" data-sheets-userformat="{"2":15295,"3":{"1":0},"4":{"1":2,"2":15389148},"5":{"1":[{"1":2,"2":0,"5":{"1":2,"2":0}},{"1":0,"2":0,"3":3},{"1":1,"2":0,"4":1}]},"6":{"1":[{"1":2,"2":0,"5":{"1":2,"2":0}},{"1":0,"2":0,"3":3},{"1":1,"2":0,"4":1}]},"7":{"1":[{"1":2,"2":0,"5":{"1":2,"2":0}},{"1":0,"2":0,"3":3},{"1":1,"2":0,"4":1}]},"8":{"1":[{"1":2,"2":0,"5":{"1":2,"2":0}},{"1":0,"2":0,"3":3},{"1":1,"2":0,"4":1}]},"10":1,"11":3,"12":0,"14":{"1":2,"2":0},"15":"Calibri","16":11}">Mustard and Datura both are-
\n(4) Perigynous "}" data-sheets-userformat="{"2":15295,"3":{"1":0},"4":{"1":2,"2":15389148},"5":{"1":[{"1":2,"2":0,"5":{"1":2,"2":0}},{"1":0,"2":0,"3":3},{"1":1,"2":0,"4":1}]},"6":{"1":[{"1":2,"2":0,"5":{"1":2,"2":0}},{"1":0,"2":0,"3":3},{"1":1,"2":0,"4":1}]},"7":{"1":[{"1":2,"2":0,"5":{"1":2,"2":0}},{"1":0,"2":0,"3":3},{"1":1,"2":0,"4":1}]},"8":{"1":[{"1":2,"2":0,"5":{"1":2,"2":0}},{"1":0,"2":0,"3":3},{"1":1,"2":0,"4":1}]},"10":1,"11":3,"12":0,"14":{"1":2,"2":0},"15":"Calibri","16":11}">Actinomorphic
— Concept: This question tests your knowledge of floral morphology, specifically the symmetry of flowers in different…Concept: This question tests your knowledge of floral morphology, specifically the symmetry of flowers in different plant families.
Why (C) is correct: Both Mustard (Brassica campestris) and Datura (Datura stramonium) belong to families (Brassicaceae and Solanaceae, respectively) that typically exhibit actinomorphic symmetry. An actinomorphic flower can be divided into two equal halves by any radial plane passing through the center, meaning it is radially symmetrical.
Why other options are wrong:
- (A) Monadelphous: This refers to stamens united in one bundle (e.g., China rose), which is not characteristic of both Mustard and Datura.
- (B) Epipetalous: This describes stamens attached to the petals (e.g., brinjal, Datura), but Mustard has free stamens, so it's not common to both.
- (D) Perigynous: This describes a flower where the ovary is half-inferior, with the floral parts arising around the middle of the ovary (e.g., plum, rose, peach). Both Mustard and Datura typically have superior ovaries (hypogynous flowers).
NEET Tip: Remember that floral symmetry (actinomorphic vs. zygomorphic) is an important diagnostic feature for plant families. Actinomorphic flowers are radially symmetrical, while zygomorphic flowers are bilaterally symmetrical.
Correct Answer: (C)
\n(4) Perigynous "}" data-sheets-userformat="{"2":15295,"3":{"1":0},"4":{"1":2,"2":15389148},"5":{"1":[{"1":2,"2":0,"5":{"1":2,"2":0}},{"1":0,"2":0,"3":3},{"1":1,"2":0,"4":1}]},"6":{"1":[{"1":2,"2":0,"5":{"1":2,"2":0}},{"1":0,"2":0,"3":3},{"1":1,"2":0,"4":1}]},"7":{"1":[{"1":2,"2":0,"5":{"1":2,"2":0}},{"1":0,"2":0,"3":3},{"1":1,"2":0,"4":1}]},"8":{"1":[{"1":2,"2":0,"5":{"1":2,"2":0}},{"1":0,"2":0,"3":3},{"1":1,"2":0,"4":1}]},"10":1,"11":3,"12":0,"14":{"1":2,"2":0},"15":"Calibri","16":11}">Actinomorphic