Mention two strategies evolved to prevent self-pollination in flowers.

Pollination in closed flowers is

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

Animal Husbandry : Mention any 'two' methods used to prevent spoilage of fish.

Pollination between two plants can be self-pollination. Explain.

In Calotropis self-pollination is avoided by ……………

Mention two similarities between A turtle and pila.

Mention any two characteristics of active absorption.

State whether the following statements are true or false. Correct the false statements. When polination involves two flowers borne on the same plant, it is called as cross-pollination.

Mention any four measures that would be taken to prevent spread of infectious diseases.

Answer the following in one or two sentences What is done so to prevent rusting of iron windows and iron doors of you houseA?