FREE NEET Biology Practice MCQ Test: Morphology Of Flowering Plants Exercise 1 Questions Answers With Detailed Explanations [PDF]

Answer: (b)

Answer: (c)

Cruciform corolla is found in radish.

Answer: (c)

Rafflesia is a specialised total root parasite as the vegetative parts of its body are reduced and the whole body is within the host root and only structure which is visible outside, is the biggest flower. The diameter of the flower is one meter and its weight is about 10 kg. Its pollination is done by elephant. The flowers are fleshy white and they emit smell, which resembles the smell of decaying meat.

Answer: (b)

Answer: (a)

Replum is present in the ovary of flower of mustard. A false septum called replum develops between the two parietal placentae in mustard and other members of family Brassicaceae. The ovary becomes bilocular.

Answer: (c)

Answer: (a)

Answer: (d)

Answer: (b)

The given floral diagram is of family Solanaceae (potato family). Its flower is bisexual and actinomorphic, abracteate or bracteate, pentamerous, cyclic. Calyx 5, gamosepalous, persistent. Corolla 5, gamopetalous, often plicate in bud. Androecium 5, polyandrous and epipetalous. Gynoecium bicarpellary and syncarpous. Ovary superior, placed obliquely, placentation axile with swollen placenta. Fruit is berry or capsule.

Answer: (d)

In china rose (Hibiscus rosa-sinensis) flowers are actinomorphic , hypogynous with twisted aestivation in corolla.

Answer: (c)

Answer: (c)

Answer: (d)

Answer: (d)

Answer: (d)

Answer: (a)

Answer: (d)

In floral formula, sexuality, symmetry, number of floral parts and their cohesion and adhesion, and the position of ovary can be depicted. The characters like placentation, aestivation and nature of thalamus cannot be given.

Answer: (b)

Answer: (d)

Answer: (c)

Hypogynous flowers (Superior ovary): In this, the ovary occupies the highest position on the thalamus, while other floral parts are situated below it. In such flowers, the ovary is superior. E.g., China rose, mustard, etc.

Perigynous flowers (Half inferior ovary): In this, the ovary is situated at the centre and other floral parts are arranged on the rim of the thalamus. The ovary here is said to be half inferior. E.g., plum, rose, peach.

Epigynous flowers (Inferior ovary): In this, the thalamus grows around the ovary fusing with its wall. The other floral parts are present above the ovary. Hence, the ovary is said to be inferior. E.g., flowers of guava and cucumber.