Which of the following element has a perforated cell

Which of the following mechanisms do not encourage cross pollination?

Alkalization also called:

Katte disease of cardamom is transmitted by which insect?

Foragial types of legs are found in _____ insect. 

White leghorn is a poultry breed famous for

Which farming technique involves clearing tracts by burning, cultivating for a limited period, and then allowing regeneration of natural vegetation?

Agranal chloroplasts are found in _____

Biting and Chewing type of mouth parts are present in:

Seeds  are  formed  but  the  embryos  develop  without  fertilization in

_________ plants are characterized by seeds having two cotyledons, reticulate venations in leaves,  and  tetramerous  or  pentamerous flowers.