Questions

Which of the following serves as a nutritive tissue for the growing embryo?

Which of the following micro-organism causes diseases like polio and chicken pox?

Which among the following does not have a cell wall?

Presence of large amounts of nutrients in waters also causes excessive growth of _________ algae.

Which of the following is a greenhouse gas or a gas which can deplete the ozone layer?

Sour taste of lemon is due to the presence of which of the following ?

P, Q, R, S and T are standing in a line. P is taller than S but shorter than Q. T is shorter than S but taller than R. Who is the second tallest of them all?

If k is the largest possible real number such that p4+q4=(p2+kpq+q2)(p2-kpq+q2),then the value of k is