In a class of 60, where girls are twice that of boys, Rohan ranked seventeenth from top. If there are 9 girls ahead of Rohan, how many boys are after him in rank?
Sol: Let the number of boys be x. Then, number of girls = 2 x ∴ x + 2 x = 60 or x = 20 So, number of boys = 20 and number of girls = 40 Number of students behind Rohan in rank = 60 – 17 = 43 Number of girls ahead of Rohan in rank = 9 Number of girls behind Rohan in rank = 40 – 9 = 31 ∴ Number of boys behind Rohan in rank = 43 – 31 = 12
When the leaflets are joined together at a common point at the petiole, the type of leaf is
The gynoecium occupies the highest position while the other parts are situated below it. Which type of flower is that?
In monocotyledonous seeds the outer covering of endosperm separates the embryo by a proteinous layer called as
Pea, gulmohur, bean, Cassia have ___ type of symmetry and hance they are ____ flowers.
Photosynthesis occurs in which cell organelle of the plant?
Manures are categorised into bulky and concentrated organic manure. An example of Concentrated organic manure is
More incidence of fruit cracking in pomegranate takes place in which season?
The monocotyledonous plants can be distinguished from dicotyledonous plants by:
The organelle responsible for protein synthesis in plant cells is the:
Pungency in radish is due to the presence of