blackberry
A raspberry is a small berry composed of many connecting drupelets.
Fruit firmness in blackberries is primarily related to skin toughness and drupelet size.
In extreme conditions, UV light associated with high temperatures can cause the drupelet to lose water content and colour.

SMART Vocabulary: related words and phrases

Fruits & seeds & their parts
ackee
aronia
barberry
bergamot
bur
caryopsis
chaff
cone
flesh
peel
pine nut
pip
pith
pithy
radicle
radicular
seed coat
seed pod
seedless
sesame seed