Q.

Persistent nucellus in the seed is known as                        [2019]

1 tegmen  
2 chalaza  
3 perisperm  
4 hilum  

Ans.

(3)

In some seeds, remains of nucellus persist. This residual nucellus which persists in the seed is called perisperm, e.g., black pepper, coffee, castor, cardamum, Nymphaea.