The difference in the elngth of a mean solar day and a sidereal day is about

Short day plant is:

Differentiate short day and long day plants.

Name two long day, two short day and 2 day neutral plants.

Earth's orbit is an ellipse with eccentricity 0.0167. Thus, earth's distance from the sun and speed as it moves around the sun varies form day to day. This mean s that the length of the solar day is not constant through the year. Assume that earth's spin axis is normal to its orbital plane and find out the length of the shortest and the longesst day. A day should be taken from noon to noon. Does this explain variation of length of the day during the year?

World Biodiversity day is

An examle of short day plant is :

Give two examples each of short day plants and long day plants.

Which of the following is a long day plant?