In which of the following plants is pollination by water most commonly observed?

In sausage tree $(Kigelia \text{ } africana)$, the pollination takes place by:

Which of the following statements is correct regarding maize?

The stigma of an insect-pollinated flower is usually:

Akash went on a field visit and collected some flowers like rice,corn,Potamogeton,Halogaris,Salvia,and Kigelia. How many anemophilous flowers did he collect?

Which of the following is the most common abiotic pollinating agent in plants?