State true of false :
A cleistogamous flower remains closed to help self pollination.

State true (T) or false (F).

List three strategies that a bisexual chasmogamous flower can evolve to prevent self-pollination (autogamy).

State True or False : One million =10^(7)

State true/false Friction produces sound.

Flowers preventing self pollination is called

Self pollination helps in:

Assertion : Chasmogamous flowers require pollinating agents Reason : Cleistogamous flowers do not expose their sex organs.

Identify the correct pair of statements (i) White kernel of Coconut is a free nuclear endosperm (ii) In dioecious plants, autogamy is prevented but geitonogamy occurs (iii) Cleistogamous flowers are always self pollinated (iv) Castor is an endospermic seed.

State true or false : (i) Unisexual flowers occur in china rose (ii) Monoecious condition in lower plants is absent.