Home
Class 11
BIOLOGY
Based on the position of floral parts on...

Based on the position of floral parts on thalamus, the flowers, are described as hypogynous, perigynous and epigynous. Which of the following floral forms (A-D) represents the flowers of Rosa and Prunus respectively ?

A

A and B

B

B and C

C

C and D

D

B and D

Text Solution

Verified by Experts

The correct Answer is:
B

In perigynous condition of a flower, the gynoecium is situated in the centre and other floral parts are located on the rim of the thalamus almost at the same level. Ovary is said to be half-inferior, e.g., Rosa (flask-shaped thalamus), Prunus (Cup-shaped thalamus).
Promotional Banner

Similar Questions

Explore conceptually related problems

When the other floral parts are arranged at the base of the gynoecium, the flower is called

Consider the following statements. (i)In Gynandropsis, Passiflora , etc., thalamus is elongated and shows well developed nodes and internodes. (ii)The floral buds in Agave, Allium , etc. , may sometimes get modified into vegetative buds or bulbils. (iii)Sepals are concerned with protection of flowers in bud condition and petals help to attract insects for pollination. (iv)Stamens and carpels serve as the male and female reproductive organs respectively. Which of the following combinations of above statements provides an evidence that flower is a modified shoot ?

In a typical complete, bisexual and hypogynous flower the arrangement of floral whorls on the thalamus from the outermost to the innermost is

Read the given statements (i) Gynoecium occupies the highest position while the other floral parts are situated below it. (ii) Overy is superior. (iii) Examples are Brassica, Hibiscus, brinjal, etc. Which condition of flowers is being described by the above the statements ?

Study following statements regarding the preparation of herbarium sheets. (i) Plant should be collected in flowering stage. (ii) Every detail regarding the plant such sa locality, ecological conditions, vegetative and floral characters, etc. should be noted. (iii) Plants are evenly pressed by unfolding all the plant parts between blotting papers (or newspapers) with the help of plant pressers. (iv) Blotting papers need not be changed until the plant gets dried. (v) After drying, the plant specimen is carefully mounted/pasted on the herbarium sheets. (vi) The herbarium sheet is labelled on the lower right hand corner representing the number of plant specimen, data of collection, etc. Which of the above statements is/are correct ?

Match column I with column II and select the correct option from the given codes. {:("Column I",,"Column II"),("(A) Vegetative bonds",,"(i) buds develop in axils of leaves"),("(B) Floral buds",,"(ii) Buds produce leafy shoots"),("(C) Axillary buds",,"(iii) Reproductive buds that produce flowers"),("(D) Accessory buds",,"(iv) Additonal buds borne at leaf bases"):}