Question

Blood and lymph are called fluid connective tissue (give reason)

Answer 1

Reasons.......

(1) embryologically, it has the same origin (mesodermal) as do the otherconnective tissue types.
(2) bloodconnects the body systems together bringing the needed oxygen, nutrients, hormones and other signaling molecules, and removing the wastes.

Answer 2

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Blood is known as a connective tissue because it connects various body tissues and organs together by bringing the oxygen, hormones and various nutrients.

Also, all the connective tissue originate from the mesodermal layer of the embryo and as blood also originate from the same, thus it is considered as the connective tissue.