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Not in the same sense as honeybees. The female cutter bee does all the work rather than the males. For more information, these articles should help: https://www.gardeningknowhow.com/plant-problems/pests/insects/leaf-cutter-bees.htm, https://extension.colostate.edu/sam/bees-wasps.pdf (pg 2)

What a great item to have such a watering can would be! I have a collection of old metal watering cans and some everyday plastic ones. Not any are graduated/marked. Some are one gallon and two gallon, one even 2 1/2 gallon, along with a couple that are about a quart. I think the only way to really achieve this for now is to buy a measuring pitcher. Mix up the amount desired and then pour it into the watering can. I currently have such a measuring pitcher that I use to make up limited fertilizer mixes for my plants and some of my roses. It works well, that is until someone brings a Measuring Watering Can to market for us!!

Here is an article with some general guidelines for deterring deer: https://www.gardeningknowhow.com/plant-problems/pests/deer/deer-repellents.htm
To find more information on electric fencing, possibly you could try researching under that topic.

Actually, there are a couple things you can use. One would be silicone adhesive (available at most home and garden centers). You can also try using florist tape, which is fairly sticky and works well. Additionally, you can use a heavy weight gazing ball that will be less prone to blowing off. There are some that are filled with sand and quite heavy. You may opt to make one from an old bowling ball too, which would be somewhat heavy. Here is more information on that: https://www.gardeningknowhow.com/garden-how-to/projects/making-a-garden-globe.htm

Regrettably I don't speak Hindi. I would suggest you seek advice from a nearby botanical garden or agricultural university. Best of fortune.

Legumes do and it is important because it fixes nitrogen from the air and returns it to the soil.