Both male and female gametes are non motile in flowering plants, so they have to be brought together for ferlilisation of occur. Write the various ways how this is achieved.

In flowering plants, both male and female gametes are non-motile. The method to bring them together for fertillisation is

In ul((i)) conditions, both male and female flowers are borne on same plant an example of such plants is ul((ii)) .

Read the following statements and select the option having both incorrect statements (i) Condoms decrease sperm motility (ii) Diaphragms, cervical caps and vaults are for both males and females (iii) IUDs are inserted by expert nurses (iv) Sterilisation is a terminal method to prevent further pregnancy.

There are 10 books in a shelf with different titles:five or these have red cover and others have green cover. In how many ways can these be arranged so that the red books are placed together ?